Subject: Driver for dataq required From: dhindry@............... Date: Wed, 01 Oct 2003 11:22:36 +1200 (NZST) Hi, I am new to the list and the world of seismology. I have just constructed my first seismometer and have made a website for all to see the records. I would like to change the software to seismowin, but require a dataq driver for it. Having read through the archives I noticed someone was offering it? Is it still available? Anyway here is the link to my page Http://k1ten3.no-ip.com In Wellington New Zealand. Thanks in advance Daniel __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Driver for dataq required From: John or Jan Lahr johnjan@........ Date: Tue, 30 Sep 2003 19:33:05 -0600 Hi Daniel, Nice web site. I don't have the driver that you need, but am interested in some more details about your web site. How are you getting the AmaSeis screen shot onto the web? There is a new version of AmaSeis on Alan Jones' web site with some added features to make it easy to get the time of phase arrivals. What seismometer are you using? Cheers, John Lahr Golden, CO At 05:22 PM 9/30/2003, you wrote: >Hi, > >I am new to the list and the world of seismology. I have just constructed my >first seismometer and have made a website for all to see the records. I >would >like to change the software to seismowin, but require a dataq driver for it. >Having read through the archives I noticed someone was offering it? Is it >still available? > >Anyway here is the link to my page > >Http://k1ten3.no-ip.com > >In Wellington New Zealand. > >Thanks in advance > >Daniel >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: S-500 From: Henry Bland bland@........... Date: Tue, 30 Sep 2003 21:43:47 -0600 We have come across some Teledyne Geotech S-500 short period seismometers that spent many years on the side of Turtle Mountain in the Crowsnest Pass, Canada (www.frankslide.com/info.html). We're currently re-instrumenting the mountain and are contemplating re-installing these old S-500s on some spare channels (our focus is on seismicity of much higher frequency). Are seismometers of this vintage still trustworthy? They've been buried (unprotected) in soil for 15 years. They look ok externally, but we haven't bench tested them (don't have the pin-out). I don't have the specs/manuals for these seismometers (I'm sure someone at Geotech Instruments can help). If anyone off-hand knows the specifications for these seismometers I would appreciate a note. Cheers, -Henry Bland __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Driver for dataq required From: "Daniel" dhindry@............... Date: Wed, 1 Oct 2003 18:31:31 +1200 Hello John, This has been one big adventure for me from day one :) I have a standalone networked pc that is running the webserver software etc. I am using a screen capture programme called snagit, it has a timer built it and captures the screen every x number of seconds, and writes it to the web directory as a gif file. I then wrote the webpage to refresh the image within the page every 4 minutes. If you need the javascript let me know :) I made my seismometer from bits and pieces I had lying around, Its based on the AS1 design, being vertical. I am waiting on a digital camera so will take some pics and send to you. Daniel -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of John or Jan Lahr Sent: Wednesday, 1 October 2003 1:33 p.m. To: psn-l@.............. Subject: Re: Driver for dataq required Hi Daniel, Nice web site. I don't have the driver that you need, but am interested in some more details about your web site. How are you getting the AmaSeis screen shot onto the web? There is a new version of AmaSeis on Alan Jones' web site with some added features to make it easy to get the time of phase arrivals. What seismometer are you using? Cheers, John Lahr Golden, CO At 05:22 PM 9/30/2003, you wrote: >Hi, > >I am new to the list and the world of seismology. I have just constructed my >first seismometer and have made a website for all to see the records. I >would >like to change the software to seismowin, but require a dataq driver for it. >Having read through the archives I noticed someone was offering it? Is it >still available? > >Anyway here is the link to my page > >Http://k1ten3.no-ip.com > >In Wellington New Zealand. > >Thanks in advance > >Daniel >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: simple system hints From: "Ed Ianni" eianni2@........... Date: Wed, 1 Oct 2003 09:09:06 -0400 Hi Gang; For those who don't want to cast their own lead for the "Lehman" or = can't find "plumbers weights". I have found Divers/Suba weights (for = their weightbelt) that can be purchased for approx. $1.75 or less a = pound. I am also using magnetic wire (approx # 32) in it's original = state (on the plastic spool) and four Home depot magnets (approx. 1"x2") = for the "pickup" mechanism. It is a very rudimentary system however I = have picked up events greater than 11,000 miles. Ed
Hi Gang;
     For those who = don't want=20 to cast their own lead for the "Lehman" or can't find "plumbers = weights". I=20 have found Divers/Suba weights (for their weightbelt) that can be = purchased=20 for approx. $1.75 or less a pound. I am also using magnetic wire (approx = # 32)=20 in it's original state (on the plastic spool) and four Home depot=20 magnets (approx. 1"x2") for the "pickup" mechanism. It is a very=20 rudimentary system however I have picked up events greater than 11,000=20 miles.  Ed     
Subject: Re: S-500 From: "a.rodriguez" stuff@................. Date: Wed, 1 Oct 2003 08:15:39 -0500 Hello Henry, I have the pin out and the manual but I will have to look for them. The copy I have is not very good but readable. Give me a day to dig it up and scan it. regards angel Tuesday, September 30, 2003, 10:43:47 PM, you wrote: HB> We have come across some Teledyne Geotech S-500 short period HB> seismometers that spent many years on the side of Turtle Mountain in the HB> Crowsnest Pass, Canada (www.frankslide.com/info.html). We're currently HB> re-instrumenting the mountain and are contemplating re-installing these HB> old S-500s on some spare channels (our focus is on seismicity of much HB> higher frequency). Are seismometers of this vintage still trustworthy? HB> They've been buried (unprotected) in soil for 15 years. They look ok HB> externally, but we haven't bench tested them (don't have the pin-out). HB> I don't have the specs/manuals for these seismometers (I'm sure someone HB> at Geotech Instruments can help). If anyone off-hand knows the HB> specifications for these seismometers I would appreciate a note. HB> Cheers, HB> -Henry Bland __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: new seismology book From: BOB BARNS royb1@........... Date: Thu, 02 Oct 2003 10:03:05 -0400 Hi gang, Physics Today Oct. 2003 reviewed (very favorably) a new seismology book. It sounds like a winner. For those not a subscriber, I append the complete review. Bob ----------------------- An Introduction to Seismology, Earthquakes, and Earth Structure Seth Stein and Michael Wysession Blackwell, Malden, Mass., 2003. $34.95 paper (498 pp.). ISBN 0-86542-078-5 Seismology is the study of earthquakes and Earth structure using the waves that accompany quakes and other Earth vibrations. Analysis of those seismic waves is the basis of most current knowledge about our planet's interior. Seth Stein and Michael Wysession, two highly regarded seismologists, have written a massive book that is a welcome addition to the handful of seismology texts appropriate for graduate or advanced undergraduate study. But with its enormous quantity of material, often presented in detailed figures, and its emphasis on deep-Earth examples, An Introduction to Seismology, Earthquakes, and Earth Structure is a valuable reference for specialists as well. The text covers the meat and potatoes of seismology--seismic-wave propagation, Earth structure, and earthquake sources. Much more is presented, though, including plate tectonics, signal processing, seismometry, and inverse theory. An extensive appendix outlines matrix algebra, vector calculus, and even principles of computer programming. Each chapter ends with a brief discussion of classic and current references, followed by homework problems. Some of those problems are designed to be solved with computers. Answers to odd-numbered problems are in the back of the book, and solutions to all of them are available to instructors over the Internet. Stein and Wysession begin their book with an introduction on the societal implications of earthquakes, which, worldwide, cause significant economic disruption and an average of more than 10 000 deaths per year. The authors then present the basic seismological theory, beginning with a rather long section that discusses waves on a string. That treatment is followed by a more traditional development of waves in elastic solids, moving from stress and strain to wave equations. The book fully treats reflection and transmission of waves, including conversions between compressional and shear waves. Theory, starting with reflection and refraction techniques, is then applied to determine Earth structure. Stein and Wysession pay particular attention to waves that travel through, bounce off, or refract around Earth's core. That's perhaps not surprising, because Wysession's research is in deep-Earth structure. The development of wave propagation is followed by a welcome section on the implications of seismological results--particularly Earth's radial velocity structure--for the composition of the crust, mantle, and core. Stein and Wysession thoroughly describe earthquake sources and include a useful account of body and surface waveform modeling. Also notable is their discussion of ground deformation during the entire earthquake cycle, and new deformation mapping techniques, such as those using interference of space-based radar images. The material on plate tectonics highlights one of Stein's research specialties, the thermal evolution of the lithosphere. The text offers a clear and complete explanation of how a single physical process--the cooling of the lithosphere at mid-ocean ridges--controls ocean depth, plate thickness, and heat flow. The description of the heating of oceanic plates as they reenter the mantle at subduction zones is likewise well developed. The mathematical descriptions of the lithosphere lead naturally to a clear explication of the forces that drive tectonic plates. The book presents, as well, extended and appreciated discussions of faulting, friction, and crustal strength. The clear, precise, but sometimes long-winded style of the book reflects its comprehensive nature. The lengthy, thorough discussions contrast with the elegant brevity of Peter Shearer's Introduction to Seismology (Cambridge U. Press, 1999). On some topics, the book's very thoroughness renders it unwieldy, and the mathematical formalism is sometimes more complicated than necessary. Look elsewhere for a quick refresher on Snell's law--even the subscripts have subscripts. The book's numerous figures are a key asset. Those illustrations, available online, often seem to have been constructed particularly for the text. In many cases, they compactly convey large amounts of detailed information. For example, a number of figures illustrate the surprising complexity of the interaction of seismic waves with material having jumps or gradients in wave velocity. That complexity is better conveyed by Stein and Wysession's book than any other text I know of. An Introduction to Seismology, Earthquakes, and Earth Structure is a very good text with an up-to-date point of view. It's a bit expensive for a course textbook, but it is quite versatile. The large amount of material covered makes the book useful for several different courses. As the basis for a standard seismology course, it would work best for the more tenacious student. The text is appropriate for a geophysically oriented plate-tectonics course or for a course on time-series analysis and inverse theory with examples and homework problems taken from geophysics. All in all, it is an indispensable reference for serious students of solid-Earth geophysics. Heidi Houston University of California Los Angeles __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: New Seismology Book From: "Finke, John" John.Finke@.......... Date: Thu, 2 Oct 2003 10:28:02 -0400 Imagine my surprise in seeing this text listed. I was a (late) graduate student enrolled in the earthquake engineering program at Washington University in St. Louis where I had seismology with Dr. Wysession. At the time we didn't have a book but used the manuscript from the "soon to be published" text. Along with the other graduate students - it was our job to read each section and provide comments on the text and, of course, to complete nearly all homework problems. Having spent so much time with this text, I can tell you that it is very readable and interesting. I say that as an outsider as I don't have a background in geological sciences. My background is in structural and solid mechanics. The latter made the material very easy to read and understand. I highly recommend the text to any one contemplating a new seismology book. Regards, John Finke, P.E., S.E. Jacobs Civil Inc. 501 N. Broadway St. Louis, Missouri 63102 john.finke@.......... PH: 314.335.4059 FX: 314.335.5129 ============================================================================== NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. ============================================================================== New Seismology Book

Imagine my surprise in seeing this text = listed.  I was a (late) graduate student enrolled in the earthquake = engineering program at Washington University in St. Louis where I had = seismology with Dr. Wysession.  At the time we didn't have a book but = used the manuscript from the "soon to be published" text.  = Along with the other graduate students - it was our job to read each section = and provide comments on the text and, of course, to complete nearly all = homework problems.

Having spent so much time with this text, I = can tell you that it is very readable and interesting.  I say that as an= = outsider as  I don't have a background in geological sciences.  My = background is in structural and solid mechanics.  The latter made the = material very easy to read and understand.

I highly recommend the text to any one = contemplating a new seismology book.

Regards,
John Finke, P.E., = S.E.
Jacobs Civil Inc.
501 N. Broadway
St. Louis, Missouri = 63102
john.finke@..........
PH: 314.335.4059
FX: 314.335.5129


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D
NOTICE - This communication may contain confidential and privileged
information that is for the sole use of the intended recipient. Any = viewing,
copying or distribution of, or reliance on this message by unintended
recipients is strictly prohibited. If you have received this message in
error, please notify us immediately by replying to the message and = deleting
it from your computer.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D

Subject: Re: new seismology book From: Richard Gagnon richg_1998@......... Date: Thu, 2 Oct 2003 09:54:11 -0700 (PDT) Hi Bob Where did you see this book for $34.95? I checked with Amazon.com and their paper version is $79.95. Richard Gagnon --- BOB BARNS wrote: > Hi gang, > Physics Today Oct. 2003 reviewed (very favorably) a new seismology > book. It sounds like a winner. For those not a subscriber, I append > the complete review. > Bob > ----------------------- > An Introduction to Seismology, Earthquakes, and Earth Structure > Seth Stein and Michael Wysession > Blackwell, Malden, Mass., 2003. $34.95 paper (498 pp.). ISBN 0-86542-078-5 > Seismology is the study of earthquakes and Earth structure using the > waves that accompany quakes and other Earth vibrations. Analysis of > those seismic waves is the basis of most current knowledge about our > planet's interior. Seth Stein and Michael Wysession, two highly regarded > seismologists, have written a massive book that is a welcome addition to > the handful of seismology texts appropriate for graduate or advanced > undergraduate study. But with its enormous quantity of material, often > presented in detailed figures, and its emphasis on deep-Earth examples, > An Introduction to Seismology, Earthquakes, and Earth Structure is a > valuable reference for specialists as well. > > The text covers the meat and potatoes of seismology--seismic-wave > propagation, Earth structure, and earthquake sources. Much more is > presented, though, including plate tectonics, signal processing, > seismometry, and inverse theory. An extensive appendix outlines matrix > algebra, vector calculus, and even principles of computer programming. > Each chapter ends with a brief discussion of classic and current > references, followed by homework problems. Some of those problems are > designed to be solved with computers. Answers to odd-numbered problems > are in the back of the book, and solutions to all of them are available > to instructors over the Internet. > > Stein and Wysession begin their book with an introduction on the > societal implications of earthquakes, which, worldwide, cause > significant economic disruption and an average of more than 10 000 > deaths per year. The authors then present the basic seismological > theory, beginning with a rather long section that discusses waves on a > string. That treatment is followed by a more traditional development of > waves in elastic solids, moving from stress and strain to wave > equations. The book fully treats reflection and transmission of waves, > including conversions between compressional and shear waves. > > Theory, starting with reflection and refraction techniques, is then > applied to determine Earth structure. Stein and Wysession pay particular > attention to waves that travel through, bounce off, or refract around > Earth's core. That's perhaps not surprising, because Wysession's > research is in deep-Earth structure. The development of wave propagation > is followed by a welcome section on the implications of seismological > results--particularly Earth's radial velocity structure--for the > composition of the crust, mantle, and core. > > Stein and Wysession thoroughly describe earthquake sources and include a > useful account of body and surface waveform modeling. Also notable is > their discussion of ground deformation during the entire earthquake > cycle, and new deformation mapping techniques, such as those using > interference of space-based radar images. > > The material on plate tectonics highlights one of Stein's research > specialties, the thermal evolution of the lithosphere. The text offers a > clear and complete explanation of how a single physical process--the > cooling of the lithosphere at mid-ocean ridges--controls ocean depth, > plate thickness, and heat flow. > > The description of the heating of oceanic plates as they reenter the > mantle at subduction zones is likewise well developed. The mathematical > descriptions of the lithosphere lead naturally to a clear explication of > the forces that drive tectonic plates. The book presents, as well, > extended and appreciated discussions of faulting, friction, and crustal > strength. > > The clear, precise, but sometimes long-winded style of the book reflects > its comprehensive nature. The lengthy, thorough discussions contrast > with the elegant brevity of Peter Shearer's Introduction to Seismology > (Cambridge U. Press, 1999). On some topics, the book's very thoroughness > renders it unwieldy, and the mathematical formalism is sometimes more > complicated than necessary. Look elsewhere for a quick refresher on > Snell's law--even the subscripts have subscripts. > > The book's numerous figures are a key asset. Those illustrations, > available online, often seem to have been constructed particularly for > the text. In many cases, they compactly convey large amounts of detailed > information. For example, a number of figures illustrate the surprising > complexity of the interaction of seismic waves with material having > jumps or gradients in wave velocity. That complexity is better conveyed > by Stein and Wysession's book than any other text I know of. > > An Introduction to Seismology, Earthquakes, and Earth Structure is a > very good text with an up-to-date point of view. It's a bit expensive > for a course textbook, but it is quite versatile. The large amount of > material covered makes the book useful for several different courses. As > the basis for a standard seismology course, it would work best for the > more tenacious student. The text is appropriate for a geophysically > oriented plate-tectonics course or for a course on time-series analysis > and inverse theory with examples and homework problems taken from > geophysics. All in all, it is an indispensable reference for serious > students of solid-Earth geophysics. > > Heidi Houston > University of California > Los Angeles > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: new seismology book From: BOB BARNS royb1@........... Date: Thu, 02 Oct 2003 13:12:17 -0400 Hi Richard, The only thing I know about the price of the book is in the review. $80 sounds more like a text book than $35. Bob Richard Gagnon wrote: > Hi Bob > > Where did you see this book for $34.95? I checked with Amazon.com and their > paper version is $79.95. > > Richard Gagnon > > > > > > > --- BOB BARNS wrote: > >>Hi gang, >> Physics Today Oct. 2003 reviewed (very favorably) a new seismology >>book. It sounds like a winner. For those not a subscriber, I append >>the complete review. >>Bob >>----------------------- >>An Introduction to Seismology, Earthquakes, and Earth Structure >>Seth Stein and Michael Wysession >>Blackwell, Malden, Mass., 2003. $34.95 paper (498 pp.). ISBN 0-86542-078-5 >>Seismology is the study of earthquakes and Earth structure using the >>waves that accompany quakes and other Earth vibrations. Analysis of >>those seismic waves is the basis of most current knowledge about our >>planet's interior. Seth Stein and Michael Wysession, two highly regarded >>seismologists, have written a massive book that is a welcome addition to >>the handful of seismology texts appropriate for graduate or advanced >>undergraduate study. But with its enormous quantity of material, often >>presented in detailed figures, and its emphasis on deep-Earth examples, >>An Introduction to Seismology, Earthquakes, and Earth Structure is a >>valuable reference for specialists as well. >> >>The text covers the meat and potatoes of seismology--seismic-wave >>propagation, Earth structure, and earthquake sources. Much more is >>presented, though, including plate tectonics, signal processing, >>seismometry, and inverse theory. An extensive appendix outlines matrix >>algebra, vector calculus, and even principles of computer programming. >>Each chapter ends with a brief discussion of classic and current >>references, followed by homework problems. Some of those problems are >>designed to be solved with computers. Answers to odd-numbered problems >>are in the back of the book, and solutions to all of them are available >>to instructors over the Internet. >> >>Stein and Wysession begin their book with an introduction on the >>societal implications of earthquakes, which, worldwide, cause >>significant economic disruption and an average of more than 10 000 >>deaths per year. The authors then present the basic seismological >>theory, beginning with a rather long section that discusses waves on a >>string. That treatment is followed by a more traditional development of >>waves in elastic solids, moving from stress and strain to wave >>equations. The book fully treats reflection and transmission of waves, >>including conversions between compressional and shear waves. >> >>Theory, starting with reflection and refraction techniques, is then >>applied to determine Earth structure. Stein and Wysession pay particular >>attention to waves that travel through, bounce off, or refract around >>Earth's core. That's perhaps not surprising, because Wysession's >>research is in deep-Earth structure. The development of wave propagation >>is followed by a welcome section on the implications of seismological >>results--particularly Earth's radial velocity structure--for the >>composition of the crust, mantle, and core. >> >>Stein and Wysession thoroughly describe earthquake sources and include a >>useful account of body and surface waveform modeling. Also notable is >>their discussion of ground deformation during the entire earthquake >>cycle, and new deformation mapping techniques, such as those using >>interference of space-based radar images. >> >>The material on plate tectonics highlights one of Stein's research >>specialties, the thermal evolution of the lithosphere. The text offers a >>clear and complete explanation of how a single physical process--the >>cooling of the lithosphere at mid-ocean ridges--controls ocean depth, >>plate thickness, and heat flow. >> >>The description of the heating of oceanic plates as they reenter the >>mantle at subduction zones is likewise well developed. The mathematical >>descriptions of the lithosphere lead naturally to a clear explication of >>the forces that drive tectonic plates. The book presents, as well, >>extended and appreciated discussions of faulting, friction, and crustal >>strength. >> >>The clear, precise, but sometimes long-winded style of the book reflects >>its comprehensive nature. The lengthy, thorough discussions contrast >>with the elegant brevity of Peter Shearer's Introduction to Seismology >>(Cambridge U. Press, 1999). On some topics, the book's very thoroughness >>renders it unwieldy, and the mathematical formalism is sometimes more >>complicated than necessary. Look elsewhere for a quick refresher on >>Snell's law--even the subscripts have subscripts. >> >>The book's numerous figures are a key asset. Those illustrations, >>available online, often seem to have been constructed particularly for >>the text. In many cases, they compactly convey large amounts of detailed >>information. For example, a number of figures illustrate the surprising >>complexity of the interaction of seismic waves with material having >>jumps or gradients in wave velocity. That complexity is better conveyed >>by Stein and Wysession's book than any other text I know of. >> >>An Introduction to Seismology, Earthquakes, and Earth Structure is a >>very good text with an up-to-date point of view. It's a bit expensive >>for a course textbook, but it is quite versatile. The large amount of >>material covered makes the book useful for several different courses. As >>the basis for a standard seismology course, it would work best for the >>more tenacious student. The text is appropriate for a geophysically >>oriented plate-tectonics course or for a course on time-series analysis >>and inverse theory with examples and homework problems taken from >>geophysics. All in all, it is an indispensable reference for serious >>students of solid-Earth geophysics. >> >>Heidi Houston >>University of California >>Los Angeles >> >>__________________________________________________________ >> >>Public Seismic Network Mailing List (PSN-L) >> >>To leave this list email PSN-L-REQUEST@.............. with >>the body of the message (first line only): unsubscribe >>See http://www.seismicnet.com/maillist.html for more information. > > > > __________________________________ > Do you Yahoo!? > The New Yahoo! Shopping - with improved product search > http://shopping.yahoo.com > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: new seismology book From: "David Saum" dSaum@............ Date: Fri, 3 Oct 2003 11:04:38 -0400 > From: Richard Gagnon > Date: Thu, 2 Oct 2003 09:54:11 -0700 (PDT) > > Where did you see this book for $34.95? I checked with Amazon.com and > their paper version is $79.95. Try one of the book search sites like http://www.addall.com/ for low prices on new and used books. Looks like this book (ISBN 0-86542-078-5) can be found for ~$70 including shipping Dave http://www.infiltec.com/seismo/ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: 1906 SF Quake & SFFD... From: "Kareem" kareem@............. Date: Sat, 4 Oct 2003 11:08:37 -0700 Can anyone recommend any good publications that discuss the 1906 earthquake and fire of San Francisco? More specifically, I'm looking for information on the controversial issues surrounding the conflicting death tolls, SF politics and SF Fire Department. I have plenty of sources on photos but I need information on those critical things mentioned above. Kareem Lanier www.HeyJooJoo.Com Educational Resources Webmaster & Photographer 37.58.00 North, 122.17.33 West 2 blocks from Hayward Fault __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: 1906 SF Quake & SFFD... From: "steve hammond" shammon1@............. Date: Sat, 4 Oct 2003 14:48:15 -0700 http://pw2.netcom.com/~shammon1/psnlink.htm#Historical this page has a link to the San Francisco Museum which has a very good website on the topic. Regards, Steve Hammond PSN San Jose Aptos, CA -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Kareem Sent: Saturday, October 04, 2003 11:09 AM To: PSN Subject: 1906 SF Quake & SFFD... Can anyone recommend any good publications that discuss the 1906 earthquake and fire of San Francisco? More specifically, I'm looking for information on the controversial issues surrounding the conflicting death tolls, SF politics and SF Fire Department. I have plenty of sources on photos but I need information on those critical things mentioned above. Kareem Lanier www.HeyJooJoo.Com Educational Resources Webmaster & Photographer 37.58.00 North, 122.17.33 West 2 blocks from Hayward Fault __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: 1906 SF Quake & SFFD... From: "Kareem" kareem@............. Date: Sat, 4 Oct 2003 22:00:01 -0700 Thanks Steve. I already had this as number one link for such information. It's a good site. If you come across anything else, just let me know. Kareem -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of steve hammond Sent: Saturday, October 04, 2003 2:48 PM To: psn-l@.............. Subject: RE: 1906 SF Quake & SFFD... http://pw2.netcom.com/~shammon1/psnlink.htm#Historical this page has a link to the San Francisco Museum which has a very good website on the topic. Regards, Steve Hammond PSN San Jose Aptos, CA -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Kareem Sent: Saturday, October 04, 2003 11:09 AM To: PSN Subject: 1906 SF Quake & SFFD... Can anyone recommend any good publications that discuss the 1906 earthquake and fire of San Francisco? More specifically, I'm looking for information on the controversial issues surrounding the conflicting death tolls, SF politics and SF Fire Department. I have plenty of sources on photos but I need information on those critical things mentioned above. Kareem Lanier www.HeyJooJoo.Com Educational Resources Webmaster & Photographer 37.58.00 North, 122.17.33 West 2 blocks from Hayward Fault __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 1906 SF Quake & SFFD... From: Karl Cunningham karlc@.......... Date: Mon, 06 Oct 2003 07:56:20 -0700 Kareem -- A fascinating book, with a lot on your subjects of interest: Thomas, G., and M. M. Witts. 1971. The San Francisco Earthquake. New York: Stein and Day. I believe it is out of print, but there are currently several on Ebay. Karl Cunningham --On Saturday, October 04, 2003 11:08 AM -0700 Kareem wrote: > Can anyone recommend any good publications that discuss the 1906 > earthquake and fire of San Francisco? More specifically, I'm looking for > information on the controversial issues surrounding the conflicting > death tolls, SF politics and SF Fire Department. > > I have plenty of sources on photos but I need information on those > critical things mentioned above. > > > Kareem Lanier > www.HeyJooJoo.Com > Educational Resources Webmaster & Photographer > 37.58.00 North, 122.17.33 West > 2 blocks from Hayward Fault __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: PSN- Schematics for my VBB Sensor From: "kpayea" kpayea@........... Date: Sun, 12 Oct 2003 21:16:59 -0700 Hello All: I finally got the schematics of my version of the STM-8 Vertical Seismometer up on my webpage: http://www.bryantlabs.net/seismo.html The method I finally ended up following was to use Ghostscript to convert Postscript to PDF. I installed a dummy Postscript printer in Win2K, set up to print to a file. I then run Ghostscript and convert it to a PDF which you can read with Acrobat. Now I just need to finish my new "Vault" for the sensor before the rains come! I can't wait to get it all back on line. Those of you who build things know that the original drawings never get updated with the things you learn along the way. I kept redlines, but to really check, I compared the new schematics to the actual hardware. This is one of the reasons why my machine has been off-line for a while. Let me know if you have any questions, Cheers, Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: PSN- Schematics for my VBB Sensor From: "John D Nelson" jnelson@................. Date: Mon, 13 Oct 2003 09:40:50 -0500 I found the electronics descritpion of the circuitry but not the schematic. Am I missing something? John Nelson -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of kpayea Sent: Sunday, October 12, 2003 11:17 PM To: psn-l@.............. Subject: PSN- Schematics for my VBB Sensor Hello All: I finally got the schematics of my version of the STM-8 Vertical Seismometer up on my webpage: http://www.bryantlabs.net/seismo.html The method I finally ended up following was to use Ghostscript to convert Postscript to PDF. I installed a dummy Postscript printer in Win2K, set up to print to a file. I then run Ghostscript and convert it to a PDF which you can read with Acrobat. Now I just need to finish my new "Vault" for the sensor before the rains come! I can't wait to get it all back on line. Those of you who build things know that the original drawings never get updated with the things you learn along the way. I kept redlines, but to really check, I compared the new schematics to the actual hardware. This is one of the reasons why my machine has been off-line for a while. Let me know if you have any questions, Cheers, Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN- Schematics for my VBB Sensor From: "kpayea" kpayea@........... Date: Mon, 13 Oct 2003 08:25:36 -0700 Click on the blocks in the block diagram - I'll try to make that clearer on the next update. Keith ----- Original Message ----- From: "John D Nelson" To: Sent: Monday, October 13, 2003 7:40 AM Subject: RE: PSN- Schematics for my VBB Sensor I found the electronics descritpion of the circuitry but not the schematic. Am I missing something? John Nelson -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of kpayea Sent: Sunday, October 12, 2003 11:17 PM To: psn-l@.............. Subject: PSN- Schematics for my VBB Sensor Hello All: I finally got the schematics of my version of the STM-8 Vertical Seismometer up on my webpage: http://www.bryantlabs.net/seismo.html The method I finally ended up following was to use Ghostscript to convert Postscript to PDF. I installed a dummy Postscript printer in Win2K, set up to print to a file. I then run Ghostscript and convert it to a PDF which you can read with Acrobat. Now I just need to finish my new "Vault" for the sensor before the rains come! I can't wait to get it all back on line. Those of you who build things know that the original drawings never get updated with the things you learn along the way. I kept redlines, but to really check, I compared the new schematics to the actual hardware. This is one of the reasons why my machine has been off-line for a while. Let me know if you have any questions, Cheers, Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: PSN- Schematics for my VBB Sensor From: "John D Nelson" jnelson@................. Date: Mon, 13 Oct 2003 12:53:06 -0500 Interestingly, I thought of and tried that and it does not appear to work for me. I'm using IE version 6.0.200.1106 John Nelson -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of kpayea Sent: Monday, October 13, 2003 10:26 AM To: psn-l@.............. Subject: Re: PSN- Schematics for my VBB Sensor Click on the blocks in the block diagram - I'll try to make that clearer on the next update. Keith ----- Original Message -----=20 From: "John D Nelson" To: Sent: Monday, October 13, 2003 7:40 AM Subject: RE: PSN- Schematics for my VBB Sensor I found the electronics descritpion of the circuitry but not the schematic. Am I missing something? John Nelson -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of kpayea Sent: Sunday, October 12, 2003 11:17 PM To: psn-l@.............. Subject: PSN- Schematics for my VBB Sensor Hello All: I finally got the schematics of my version of the STM-8 Vertical Seismometer up on my webpage: http://www.bryantlabs.net/seismo.html The method I finally ended up following was to use Ghostscript to convert Postscript to PDF. I installed a dummy Postscript printer in Win2K, set up to print to a file. I then run Ghostscript and convert it to a PDF which you can read with Acrobat. Now I just need to finish my new "Vault" for the sensor before the rains come! I can't wait to get it all back on line. Those of you who build things know that the original drawings never get updated with the things you learn along the way. I kept redlines, but to really check, I compared the new schematics to the actual hardware. This is one of the reasons why my machine has been off-line for a while. Let me know if you have any questions, Cheers, Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: PSN- Schematics for my VBB Sensor From: Richard Gagnon richg_1998@......... Date: Mon, 13 Oct 2003 11:13:25 -0700 (PDT) I clicked on the Seismometer Electronics highlight and then got another page with a block diagram that gives another link http://www.bryantlabs.net/VBBTheory.htm when I put my pointer over each block on the layout. You get a PDF file when you click on each block. Yes, it could be a little clearer. Richard Gagnon __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN- Schematics for my VBB Sensor From: "kpayea" kpayea@........... Date: Mon, 13 Oct 2003 13:52:10 -0700 http://www.bryantlabs.net/VBBTheory.htm Here's the more direct link to the schematic page. I tried the links from the block diagram in IE version 6, SBC Yahoo Browser, and Netscape 7, and they all work. The drawings are in Adobe Acrobat pdf format, so you will need to have the reader installed. I added a caption above the block diagram to clarify the situation, I hope. Let me know if there are any problems with other browsers, etc. I don't know what affect a pop-up blocker might have. Thanks, Keith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: PSN- Schematics for my VBB Sensor From: "John D Nelson" jnelson@................. Date: Mon, 13 Oct 2003 15:53:46 -0500 I realized my mistake after a while, I was using the block diagram on the wrong page. Jn -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of kpayea Sent: Monday, October 13, 2003 3:52 PM To: psn-l@.............. Subject: Re: PSN- Schematics for my VBB Sensor http://www.bryantlabs.net/VBBTheory.htm Here's the more direct link to the schematic page. I tried the links from the block diagram in IE version 6, SBC Yahoo Browser, and Netscape 7, and they all work. The drawings are in Adobe Acrobat pdf format, so you will need to have the reader installed. I added a caption above the block diagram to clarify the situation, I hope. Let me know if there are any problems with other browsers, etc. I don't know what affect a pop-up blocker might have. Thanks, Keith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN- Schematics for my VBB Sensor From: "Jack Sandgathe" jacksand@............... Date: Mon, 13 Oct 2003 20:04:06 -0700 Keith, Thanks for the posting on your VBB system. I was able to find my way to your schematics after a try or two. However, as a personal preference, I avoid using PDF links if I have a choice, as it is usually not possible to save the file to my HDD. Thanks again, Jack Sandgathe ----- Original Message ----- From: "kpayea" To: Sent: Monday, October 13, 2003 1:52 PM Subject: Re: PSN- Schematics for my VBB Sensor > http://www.bryantlabs.net/VBBTheory.htm > > Here's the more direct link to the schematic page. I tried the links from > the block diagram in IE version 6, SBC Yahoo Browser, and Netscape 7, and > they all work. > > The drawings are in Adobe Acrobat pdf format, so you will need to have the > reader installed. > > I added a caption above the block diagram to clarify the situation, I hope. > > Let me know if there are any problems with other browsers, etc. I don't > know what affect a pop-up blocker might have. > > Thanks, > > Keith > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Atmospheric Pressure From: "John D Nelson" jnelson@................. Date: Tue, 14 Oct 2003 08:22:15 -0500 I stumbled into some posts on PSN in the 1996 era regarding atmospheric pressure changes and their relation, if any to seismic activity. Has there been any further research in this area? (forgive me for being too lazy to read 7 years worth of posts to see.) I built an extremely sensitive barometer using a manometer and optical switch based on a Scientific American article and later modified it into a "dry" version using a flexible diaphragm with a magnet on it and a Hall effect sensor. It measures pressure indirectly by matching atmospheric pressure with a heated chamber and measures the pressure indirectly as temperature change of the heated chamber. The liquid version was sensitive to within about 3/4 inch of water and the dry one is pretty close to that value. It's pretty hard for me to correlate the pressure changes with any activity here as seismic activity is pretty small on this piece of the globe. =20 John Nelson Message
I = stumbled into some=20 posts on PSN in the 1996 era regarding atmospheric pressure changes and = their=20 relation, if any to seismic activity.  Has there been any further = research=20 in this area?  (forgive me for being too lazy to read 7 years worth = of=20 posts to see.)  I built an extremely sensitive barometer using a = manometer=20 and optical switch based on a Scientific American article and later = modified it=20 into a "dry" version using a flexible diaphragm with a magnet on it and = a Hall=20 effect sensor.  It measures pressure indirectly by matching = atmospheric=20 pressure with a heated chamber and measures the pressure indirectly as=20 temperature change of the heated chamber.  The liquid version was = sensitive=20 to within about 3/4 inch of water and the dry one is pretty close = to that=20 value.  It's pretty hard for me to correlate the pressure changes = with any=20 activity here as seismic activity is pretty small on this piece of the=20 globe.
 
John=20 Nelson
=00 Subject: Re: PSN- Schematics for my VBB Sensor From: "Marino De Menech" albalonga@........... Date: Tue, 14 Oct 2003 13:37:25 +0000

Hi Keith,

Great posting, clearly laid out. Sean-Thomas' Vertical Seismometer is a project I have been intending to tackle for a couple of years. Now your posting has given me the inspiration and the details that I needed to get me started.
thanks,

Marino De Menech

 

>From: "Jack Sandgathe"
>Reply-To: psn-l@..............
>To:
>Subject: Re: PSN- Schematics for my VBB Sensor
>Date: Mon, 13 Oct 2003 20:04:06 -0700
>
>Keith, Thanks for the posting on your VBB system. I was able to find my
>way to your schematics after a try or two. However, as a personal
>preference, I avoid using PDF links if I have a choice, as it is usually not
>possible to save the file to my HDD. Thanks again, Jack Sandgathe
>
>
>----- Original Message -----
>From: "kpayea"
>To:
>Sent: Monday, October 13, 2003 1:52 PM
>Subject: Re: PSN- Schematics for my VBB Sensor
>
>
> > http://www.bryantlabs.net/VBBTheory.htm
> >
> > Here's the more direct link to the schematic page. I tried the links from
> > the block diagram in IE version 6, SBC Yahoo Browser, and Netscape 7, and
> > they all work.
> >
> > The drawings are in Adobe Acrobat pdf format, so you will need to have the
> > reader installed.
> >
> > I added a caption above the block diagram to clarify the situation, I
>hope.
> >
> > Let me know if there are any problems with other browsers, etc. I don't
> > know what affect a pop-up blocker might have.
> >
> > Thanks,
> >
> > Keith
> >
> > __________________________________________________________
> >
> > Public Seismic Network Mailing List (PSN-L)
> >
> > To leave this list email PSN-L-REQUEST@.............. with
> > the body of the message (first line only): unsubscribe
> > See http://www.seismicnet.com/maillist.html for more information.
>
>__________________________________________________________
>
>Public Seismic Network Mailing List (PSN-L)
>
>To leave this list email PSN-L-REQUEST@.............. with
>the body of the message (first line only): unsubscribe
>See http://www.seismicnet.com/maillist.html for more information.

The new MSN 8: smart spam protection and 2 months FREE* Subject: Re: Atmospheric Pressure From: "Marino De Menech" albalonga@........... Date: Wed, 15 Oct 2003 14:06:19 +0000

Hi John,

I personally have not heard of any research in that regard but it certainly would be interesting to pursue it further. I would also be interested in a more detailed write up of  how your barometer works.

Marino De Menech

>From: "John D Nelson"
>Reply-To: psn-l@..............
>To:
>Subject: Atmospheric Pressure
>Date: Tue, 14 Oct 2003 08:22:15 -0500
>
>I stumbled into some posts on PSN in the 1996 era regarding atmospheric
>pressure changes and their relation, if any to seismic activity. Has
>there been any further research in this area? (forgive me for being too
>lazy to read 7 years worth of posts to see.) I built an extremely
>sensitive barometer using a manometer and optical switch based on a
>Scientific American article and later modified it into a "dry" version
>using a flexible diaphragm with a magnet on it and a Hall effect sensor.
>It measures pressure indirectly by matching atmospheric pressure with a
>heated chamber and measures the pressure indirectly as temperature
>change of the heated chamber. The liquid version was sensitive to
>within about 3/4 inch of water and the dry one is pretty close to that
>value. It's pretty hard for me to correlate the pressure changes with
>any activity here as seismic activity is pretty small on this piece of
>the globe.
>
>John Nelson

Protect your PC - Click here for McAfee.com VirusScan Online Subject: Re: Atmospheric Pressure From: John Hernlund hernlund@............ Date: Wed, 15 Oct 2003 11:06:13 -0700 There was an interesting paper in Science some years back that showed a fairly convincing correlation between certain wavelength atmospheric disturbances (harmonic order in the 20s or so) and a seismically detectable excitation in the Earth at the same wavelengths. Another paper in Nature showed annual modulation of Landers aftershocks with activity peaking in September. I think there is pay dirt there, but I've not followed the developments...some times these claims are even retracted after further analysis and thought. Some current paradigms on seismicity, e.g. chaos theory, might suggest that every little factor can have an effect on seismicity (like the butterfly effect). Here are the refs: Gao, S.S., P.G. Silver, A.T. Linde, and I.S. Sacks, Annual Modulation of Triggered Seismicity Following the 1992 Landers Earthquake in California, Nature, vol. 406: 500-504, Aug. 3, 2000. Kiwamu Nishida, Naoki Kobayashi, and Yoshio Fukao, Resonant Oscillations Between the Solid Earth and the Atmosphere, Science 2000 March 24; 287: 2244-2246. Cheers! John __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Atmospheric Pressure From: "tdick" dickthomas01@............. Date: Wed, 15 Oct 2003 13:12:27 -0500 There was an incident along the New Madrid fault -- southern Illinois -- in the late sixties or early seventies (I don't have the details right off the top of my head) that occurred within an hour or two of the passing a very severe low which was followed by a very strong, cold high. ----- Original Message ----- From: "John Hernlund" To: Sent: Wednesday, October 15, 2003 1:06 PM Subject: Re: Atmospheric Pressure > There was an interesting paper in Science some years back that showed a > fairly convincing correlation between certain wavelength atmospheric > disturbances (harmonic order in the 20s or so) and a seismically > detectable excitation in the Earth at the same wavelengths. Another > paper in Nature showed annual modulation of Landers aftershocks with > activity peaking in September. I think there is pay dirt there, but > I've not followed the developments...some times these claims are even > retracted after further analysis and thought. Some current paradigms on > seismicity, e.g. chaos theory, might suggest that every little factor > can have an effect on seismicity (like the butterfly effect). > > Here are the refs: > > Gao, S.S., P.G. Silver, A.T. Linde, and I.S. Sacks, Annual Modulation > of Triggered Seismicity Following the 1992 Landers Earthquake in > California, Nature, vol. 406: 500-504, Aug. 3, 2000. > > Kiwamu Nishida, Naoki Kobayashi, and Yoshio Fukao, Resonant > Oscillations Between the Solid Earth and the Atmosphere, Science 2000 > March 24; 287: 2244-2246. > > Cheers! > John > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Atmospheric Pressure From: "Wiiliam B. Combs" bcombs@........ Date: Wed, 15 Oct 2003 22:12:40 -0500 Ok, I remember the day in April, 1974, when there were over 100 = tornadoes in the Midwest. We were in southern Indiana visiting friends, I was about = 13, we were just sitting around talking and then the whole house shook. We thought it was Dad fooling around in the kitchen. But it was decided = later it was an earthquake. We were near Paoli, Indiana(Orange County). I remember driving home and hearing all the radio broadcasts about one = tornado right after another. The KY state fairgrounds was destroyed and I think Xenia, Ohio. Anyone else remember that day?=20 Dianne Combs, Bill's wifey, just sneaking a peak at his mail. =20 -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... = On Behalf Of tdick Sent: Wednesday, October 15, 2003 1:12 PM To: psn-l@.............. Subject: Re: Atmospheric Pressure There was an incident along the New Madrid fault -- southern Illinois -- = in the late sixties or early seventies (I don't have the details right off = the top of my head) that occurred within an hour or two of the passing a = very severe low which was followed by a very strong, cold high. ----- Original Message -----=20 From: "John Hernlund" To: Sent: Wednesday, October 15, 2003 1:06 PM Subject: Re: Atmospheric Pressure > There was an interesting paper in Science some years back that showed = a > fairly convincing correlation between certain wavelength atmospheric > disturbances (harmonic order in the 20s or so) and a seismically > detectable excitation in the Earth at the same wavelengths. Another > paper in Nature showed annual modulation of Landers aftershocks with > activity peaking in September. I think there is pay dirt there, but > I've not followed the developments...some times these claims are even > retracted after further analysis and thought. Some current paradigms = on > seismicity, e.g. chaos theory, might suggest that every little factor > can have an effect on seismicity (like the butterfly effect). > >=20 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: dynamite blast recordings From: "tdick" dickthomas01@............. Date: Thu, 16 Oct 2003 12:00:48 -0500 I am near an active strip mining area with regular blasting. I have three months of data now. Is there anyone I could communicate with that could tell me if I am correctly analyzing my data? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: dynamite blast recordings From: Canie canie@........... Date: Thu, 16 Oct 2003 11:31:19 -0700 If I remember correctly, the first motion is always UP on a quarry blast... Kate Hutton or Lucy Jones at caltech might be able to help. Of course, so may others on this list. Canie At 12:00 PM 10/16/03 -0500, you wrote: >I am near an active strip mining area with regular blasting. I have three >months of data now. Is there anyone I could communicate with that could tell >me if I am correctly analyzing my data? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: dynamite blast recordings From: Jim ODonnell jimo17@........ Date: Thu, 16 Oct 2003 17:02:36 -0700 Hi Dick- Can you describe your system, how many components, sensor specs- do you know the polarity of the sensors- Run a tap or tilt test? How far away are the blasts? Also can you post or send me some data to look at? Jim UNLV in Las Vegas......... On Thu, 16 Oct 2003 12:00:48 -0500 "tdick" writes: > I am near an active strip mining area with regular blasting. I have > three > months of data now. Is there anyone I could communicate with that > could tell > me if I am correctly analyzing my data? > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > > ________________________________________________________________ The best thing to hit the internet in years - Juno SpeedBand! Surf the web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today! __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: dynamite blast recordings From: "tdick" dickthomas01@............. Date: Thu, 16 Oct 2003 20:00:03 -0500 ----- Original Message ----- From: "Jim ODonnell" To: Cc: Sent: Thursday, October 16, 2003 7:02 PM Subject: Re: dynamite blast recordings > Hi Dick -- first name Tom, last Dick - old german ancestry Can you describe your system, Larry Cochrane's boards and software -- magnetic induction coils One vertical -- actually a 10 lb (approx) horsemagnet suspended on a spring, dampened vertically in oil and for torque with magnets -- I can "see" anything the local Universities show on their seismometers locally and most earthquakes around the world that are 6 or more magnitude, -- I have difficulty picking up mag 3 at the shallow depths in California from here in southern Indiana -- Lehmans are not as sensitive two Lehman's one north-south and the other east-west tuned to about 8 seconds -- orientation checked ahead of time by compass setup below ground level in basement sensitivity -- well not calibrated yet but I can "see" the cat sitting on the floor in the room with the units scratching her ear, I can "see" walnuts falling off the tree onto the screened-in porch roof attached to the house about 25 ft away from the units and the difference between my daughter-in-law and my son walking into the house to feed the cat when we were gone how many components, sensor specs- > do you know the polarity of the sensors- Run a tap or tilt test? no How far away are the blasts? least distance about 30 miles and the fartherest at least 120 miles -- there is an underground mine as well I have one confirmed dynamite blast located by St. Louis using the local seismometer (SIU) and IU at Bloomington, IN that was 34 miles away -- my software correlated with this one > Also can you post or send me some data to look at? If you have the time --- give me an email address; do you want the original data or Winquake? I don't have a web site. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Seismographs from Wards From: RLLaney@....... Date: Thu, 16 Oct 2003 23:09:46 EDT Hello all: I just received the October 2003 copy of Geotimes. Inside the front cover is an ad from Ward's Natural Science for two horizontal seismographs. A strip-chart model sells for $2,995 and a computer-interface model sells for $1,995. The latter uses software called EQuake. Sure makes some of our homemade units with Larry's electronics a bargain. Does anyone know anything about EQuake? Bob Laney Salem, Oregon Hello all:

I just received the October 2003 copy of Geotimes.  Inside the front co= ver is an ad from Ward's Natural Science for two horizontal seismographs.&nb= sp; A strip-chart model sells for $2,995 and a computer-interface model sell= s for $1,995.  The latter uses software called EQuake.  Sure makes= some of our homemade units with Larry's electronics a bargain. 

Does anyone know anything about EQuake?

Bob Laney
Salem, Oregon Subject: Re: Seismographs from Wards From: John or Jan Lahr johnjan@........ Date: Thu, 16 Oct 2003 22:08:37 -0600 Hi Bob, If it's anything like the system that I saw Ward's selling two years ago at an NSTA meeting, I would say stay clear! The software was not nearly as nice as either AmaSeis or WinQuake or WinSDR and the sensor was very large and would be difficult to cover. Cheers, John At 09:09 PM 10/16/2003, you wrote: >Hello all: > >I just received the October 2003 copy of Geotimes. Inside the front cover >is an ad from Ward's Natural Science for two horizontal seismographs. A >strip-chart model sells for $2,995 and a computer-interface model sells >for $1,995. The latter uses software called EQuake. Sure makes some of >our homemade units with Larry's electronics a bargain. > >Does anyone know anything about EQuake? > >Bob Laney >Salem, Oregon __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Fw: Vacancies at the Seismic Research Unit From: "Erich Kern" efkern@............. Date: Tue, 21 Oct 2003 17:01:55 -0700 **************************************** Vacancies at the Seismic Research Unit **************************************** From: richie_robertson@.............. Dear Colleagues, I recently sent a note indicating that the Seismic Research Unit had an opening for the post of Volcanologist. I neglected to indicate that another position, that of Geophysicist, was also available. This latter post was not previously advertised on the listserv. The deadline for applications to both position has been extended to 30 November 2003. Persons interested in both positions can find further details on our website at http://www.uwiseismic.com/. You can also access information on these positions by going directly to the following link http://www.uwiseismic.com/SRU_Site01/About/vacancy.html. If you have purely technical questions regarding any of these posts you can contact the Head of Unit at johnbshepherd@............... Richie ---------------------------------------------------------------------------- Richard Robertson, Geologist Seismic Research Unit, The University of the West Indies St. Augustine, TRINIDAD, W.I. Tel: +1-868-662-4659, Fax: +1-868-663-9293 Email: richie_robertson@.............. www: http://www.uwiseismic.com/ ---------------------------------------------------------------------------- __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Alternative to DATAQ AD From: John or Jan Lahr johnjan@........ Date: Tue, 28 Oct 2003 12:08:06 -0700 This may be an alternative to the DATAQ AD unit. http://www.measurementcomputing.com/cbicatalog/cbiproduct_new.asp?dept_id=352&pf_id=1535 Cheers, John __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: new 24 bits 3 channel a/d board From: "Mauro Mariotti" mariotti@......... Date: Thu, 30 Oct 2003 14:32:41 +0100 Hi all, I communicate to the list that a new 24 bits board low cost is available to be used with SEISMOWIN datalogger. You can find the preliminary at the following page: http://www.infoeq.it/doc04_e.htm#24bit or http://mariottim.interfree.it/doc04_e.htm#24bit comments and questions are welcome regards mauro __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: ionospheric earthquake detection From: "David Saum" dSaum@............ Date: Tue, 4 Nov 2003 09:48:51 -0500 http://www.theinquirer.net/?article=12482 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: ebay seismo auction From: BOB BARNS royb1@........... Date: Sun, 09 Nov 2003 10:04:55 -0500 Hi gang, Earthquake Interprtations - Seismograms Item number: 3565042245 Auction ends 11/18. Looks like an interesting book. Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: 1 Hz vertical seismometer on ebay, good price, great instrument From: hammond hammond@........... Date: Fri, 14 Nov 2003 05:50:44 -0900 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2573074827&ssPageName=ADME:B:SS:US:1 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: ebay auction From: BOB BARNS royb1@........... Date: Mon, 17 Nov 2003 09:59:23 -0500 Hi gang, BENTLY NEVADA ' TK-80' SEISMOPROBE MEASURES VIBRATION DISPLACMENT ,VELOCITY Item number: 2573961149 this auction ends 11/23. Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: ebay auction From: BOB BARNS royb1@........... Date: Mon, 17 Nov 2003 20:08:34 -0500 Hi gang, GALVANOMETER PHOTO TUBE AMPLIFIER GEOTECH Item number: 2573016755 auction ends 11/17 Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Possible ink for unintended use... From: "Meredith Lamb" meredithlamb@............. Date: Mon, 17 Nov 2003 21:57:17 -0700 Hi all, I recently obtained a "ink refill system", made by IMS (Interactive Media Sales, LLC). The "kit" has a variety of colors and is meant for computer printer refills. There is eight 60ml bottles in such; with the black color having three bottles. There is also cyan (blue), magneta (~red), and a yellow ink. I've not tried the ink for intended purpose yet; but we'll see how well (or bad) it works in time. Its obvious that this ink could "possibly" be used for those who still activiely use either ink chart recorders or drum recorders. I obtained this "kit" at a local Costco store in their computer/printer ink section for US $16.32. One may have to check other computer stores for the same item availability. All together the amount of ink is 480ml, and in my opinion its a fairly good price for the amount of ink therein. I did try a partial drop of black ink on the end of a toothpick, and it seemed to give sufficient color and a fine trail line for a short distance. The ink drys fast (at least on bond paper)...but isn't waterproof. In short...it "may" work with recorders; but its likely quite dependent on the actual paper used in such. Sometimes it seems that recording ink is rather a science for the variety of instruments and/or specific paper it could be used with. IMS does have a web site, where one can obtain more information for either their specific brand of computer printer or other data. The company seems to be based in Bedford, Texas. The online site doesn't seem to sell the kits there; but perhaps if there is interest one may email them for possible retail sources. The web address is: http://www.ims-ink.com Take care, Meredith Lamb

Hi all,
 
I recently obtained a "ink refill system", made by IMS (Interactive Media Sales, LLC).  The
"kit" has a variety of colors and is meant for computer printer refills.  There is eight 60ml bottles
in such; with the black color having three bottles.  There is also cyan (blue), magneta
(~red), and a yellow ink.  I've not tried the ink for intended purpose yet; but we'll see how
well (or bad) it works in time.
 
Its obvious that this ink could "possibly" be used for those who still activiely use either ink
chart recorders or drum recorders.  I obtained this "kit" at a local Costco store in their
computer/printer ink section for US $16.32.   One may have to check other computer
stores for the same item availability.  All together the amount of ink is 480ml, and
in my opinion its a fairly good price for the amount of ink therein.   I did try a partial drop of
black ink on the end of a toothpick, and it seemed to give sufficient color and a fine trail
line for a short distance.  The ink drys fast (at least on bond paper)...but isn't waterproof.
In short...it "may" work with recorders; but its likely quite dependent on the actual paper
used in such.   Sometimes it seems that recording ink is rather a science for the variety
of instruments and/or specific paper it could be used with.
 
IMS does have a web site, where one can obtain more information for either their specific
brand of computer printer or other data.  The company seems to be based in Bedford,
Texas.  The online site doesn't seem to sell the kits there; but perhaps if there is interest
one may email them for possible retail sources.  The web address is:
 
Take care, Meredith Lamb
 
 

Subject: New WinQuake Release From: "Larry Cochrane" lcochrane@.............. Date: Wed, 19 Nov 2003 19:48:58 -0800 Hi Everyone, I you are running the current beta version of WinQuake you should be seeing a timeout warning message after starting up the program. I have a new winqk32.exe file ready that does not have a timeout date. This exe file is what I will be using when I make a full release that includes a setup program. I don't have enough time to make a full release so for now I am only release the new program file. If you are not running Winquake you will need to install version 2.8.9 and then upgrade to version 2.9. A download link and more information can be found on this page: http://www.seismicnet.com/wqdocs/wqbeta.html Regards, Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: PSN: Re: About Leafspring Vertical Broadband Seismometer From: "kpayea" kpayea@........... Date: Fri, 21 Nov 2003 09:15:08 -0800 Hello PSN List: I got this email from Serhan recently, and we are hoping you can help. = Do any of you have the document package on Sean-Thomas Morrissey's VBB = seismometer? I never got the package from him, but I seem to remember = that some of you did. Let us know if you could make a set of copies and = mail them to Serhan. Thanks! Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 ----- Original Message -----=20 From: Serhan BASTURK=20 To: kpayea=20 Sent: Friday, November 21, 2003 6:35 AM Subject: Re: About Leafspring Vertical Broadband Seismometer Dear Keith; Thank you very much about your interesting. I have all of photographs and schematics on your web page. but it = would be good when we got the Sean Thomas' plans, too. i don't know = exactly what to do. so if you request that on PSN mailing list(?) it = would be really good. Can you really help me about that? Yours, Serhan Ba=FEt=FCrk ----- Original Message -----=20 From: kpayea=20 To: Serhan BASTURK=20 Sent: Monday, November 17, 2003 4:31 AM Subject: Re: About Leafspring Vertical Broadband Seismometer Hello: It is sad that we lost Sean-Thomas. He was an excellent source of = information for us Amateur Seismologists. The only documents I have are the photographs and the schematics on = my web page. I don't have any mechanical drawings of my Seismometer. = It was based loosely on Sean-Thomas's design, but built with different = materials I had, so I never got the set of drawings from him. If you want a copy of Sean-Thomas's drawings, I know that several = people on the PSN mailing list got them from Sean-Thomas a few years = ago. Perhaps one of them would be willing to copy their set for you. = If you would like, I can request this on the mailing list for you. Keith ps: Your english is fine! =20 ----- Original Message -----=20 From: Serhan BASTURK=20 To: kpayea@................. Sent: Saturday, November 15, 2003 12:18 PM Subject: About Leafspring Vertical Broadband Seismometer Dear Sir; My name is Serhan Basturk. i am 17 years old and living in Turkey = /Istanbul. i and my friend would to build an vertical seismometer. we found = some informations about the A Leafspring Broadband Vertical Seismometer = by Sean-Thomas Morrissey. i would to contat with him. but i heard that = he died several months ago and i am very sad about that... so i = contacted with Brian J. Mitchell, Professor of Geophysics Dept. of Earth = and Atmospheric Sciences Saint Louis University. but he said "Dear = Serhan--Sean Morrissey died several months ago and nobody here is doing = instrumental work. He was working only on developing a horizontal = instrument.I am sorry that I cannot be of help." then i contacted with Larry Cochrane. he told me about you. i = surfed on your web pages www.bryantlabs.net/seismo.html and saw that you = already built an another one. congrulations about! i hope we will same, = too :) so i think that you have the copies of these plans. and i hope = you can help us, sir. =20 but i need that plans of these vertical seismometer to build a new = one which belong to us. here it's very expensive to buy an seismometer = and we are building for our school a seismic station. the student who = are 3-4 years older than us built one lehman last year. 2-3 years older = than us are working for an another at the moment. but we are in need of = an vertical one. sir can you help us? if you have this plans we are = ready to pay about posting and copy new plans cost. sir, there are only = 9 plans at web. and Thomas-Sean wrote:"The best way to get a current set = of about 20 pages of this documentation is to send me your address (or = label) and 5 ea 33cent ps. I will provide the copies and an envelope." but as i said we can't reach these plans. i will be waiting for = your answer...=20 Thank you very much. Yours Faithfully Sincerly Serhan Basturk PS: sorry about my poor english. we are learning german at the = moment. i hope you can understand me :)
Hello PSN List:
 
I got this email from Serhan recently, = and we are=20 hoping you can help.  Do any of you have the document package on=20 Sean-Thomas Morrissey's VBB seismometer?  I never got the package = from him,=20 but I seem to remember that some of you did.  Let us know if you = could make=20 a set of copies and mail them to Serhan.
 
Thanks!
 
       =20 Keith
 
Keith Payea
Bryant Labs
kpayea@..............
www.bryantlabs.net
(707)=20 566-8935
----- Original Message -----
From:=20 Serhan=20 BASTURK
To: kpayea
Sent: Friday, November 21, 2003 = 6:35=20 AM
Subject: Re: About Leafspring = Vertical=20 Broadband Seismometer

Dear Keith;
 
Thank you very much about your=20 interesting.
 
I have all of=20 photographs and schematics on your web page. but it would be good = when we=20 got the Sean Thomas' plans, too. i don't know exactly what to do. so = if you=20 request that on PSN mailing list(?) it would be really good. = Can you=20 really help me about that?
 
Yours,
Serhan Ba=FEt=FCrk
----- Original Message -----
From:=20 kpayea=20
Sent: Monday, November 17, = 2003 4:31=20 AM
Subject: Re: About Leafspring = Vertical=20 Broadband Seismometer

Hello:
 
It is sad that we lost = Sean-Thomas.  He=20 was an excellent source of information for us Amateur=20 Seismologists.
 
The only documents I have are the = photographs=20 and the schematics on my web page.  I don't have any mechanical = drawings of my Seismometer.  It was based loosely on = Sean-Thomas's=20 design, but built with different materials I had, so I never got the = set of=20 drawings from him.
 
If you want a copy of Sean-Thomas's = drawings, I=20 know that several people on the PSN mailing list got them from = Sean-Thomas a=20 few years ago.  Perhaps one of them would be willing to copy = their set=20 for you.  If you would like, I can request this on the mailing = list for=20 you.
 
Keith
 
ps:  Your english is = fine! =20
----- Original Message ----- =
From:=20 Serhan BASTURK
Sent: Saturday, November = 15, 2003=20 12:18 PM
Subject: About Leafspring = Vertical=20 Broadband Seismometer

Dear=20 Sir;

My name is Serhan Basturk. i am 17 years old and = living in=20 Turkey /Istanbul.
i and my friend would to build an vertical = seismometer. we=20 found some informations about the A Leafspring Broadband Vertical=20 Seismometer by Sean-Thomas Morrissey. i = would to contat=20 with him. but i heard that he died several months ago and i am = very sad=20 about that... so i contacted with Brian J. Mitchell, Professor of=20 Geophysics Dept. of Earth and Atmospheric Sciences Saint Louis = University.=20 but he said "Dear Serhan--Sean Morrissey died several months ago = and=20 nobody here is doing instrumental work. He was working only on = developing=20 a horizontal instrument.I am sorry that I cannot be of=20 help."
then i contacted with Larry Cochrane. he = told me about=20 you. i surfed on your web pages www.bryantlabs.net/seismo.= html=20 and saw that you already built an another one. congrulations = about! i hope=20 we will same, too :) so i think that you have the copies of these=20 plans. and i hope you can help us, sir.=20  
 
but i=20 need that plans of these vertical seismometer to build a new one = which=20 belong to us. here it's very expensive to buy an seismometer and = we are=20 building for our school a seismic station. the student who are 3-4 = years=20 older than us built one lehman last year. 2-3 years older than us = are=20 working for an another at the moment. but we are in need of an = vertical=20 one. sir can you help us? if you have this plans we are ready = to pay=20 about posting and copy new plans cost. sir, there are only 9 = plans at=20 web. and Thomas-Sean wrote:"The best way to get a current set of = about 20=20 pages of this documentation is to send me your address (or label) = and 5 ea=20 33cent ps. I will provide the copies and an = envelope."
 
but as i=20 said we can't reach these plans. i will be waiting for your = answer...=20
Thank you=20 very much.


Yours Faithfully = Sincerly
Serhan=20 Basturk
 
PS: sorry about my poor english. = we are=20 learning german at the moment. i hope you can understand me=20 :)
Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer From: Raul Alvarez ralvarez@........ Date: Sat, 22 Nov 2003 05:15:23 -0700 Hi all, Why not go the Sean's website - it's still there. http://www.eas.slu.edu/People/STMorrissey/index.html Raul kpayea wrote: > Hello PSN List: > > I got this email from Serhan recently, and we are hoping you can > help. Do any of you have the document package on Sean-Thomas > Morrissey's VBB seismometer? I never got the package from him, but I > seem to remember that some of you did. Let us know if you could make > a set of copies and mail them to Serhan. > > Thanks! > > Keith > > Keith Payea > Bryant Labs > kpayea@.............. > www.bryantlabs.net > (707) 566-8935 > > ----- Original Message ----- > From: Serhan BASTURK > To: kpayea > Sent: Friday, November 21, 2003 6:35 AM > Subject: Re: About Leafspring Vertical Broadband Seismometer > > Dear Keith; > > Thank you very much about your interesting. > > I have all of photographs and schematics on your web page. but it > would be good when we got the Sean Thomas' plans, too. i don't > know exactly what to do. so if you request that on PSN mailing > list(?) it would be really good. Can you really help me about that? > > Yours, > Serhan Baştürk > > ----- Original Message ----- > From: kpayea > To: Serhan BASTURK > Sent: Monday, November 17, 2003 4:31 AM > Subject: Re: About Leafspring Vertical Broadband Seismometer > > Hello: > > It is sad that we lost Sean-Thomas. He was an excellent > source of information for us Amateur Seismologists. > > The only documents I have are the photographs and the > schematics on my web page. I don't have any mechanical > drawings of my Seismometer. It was based loosely on > Sean-Thomas's design, but built with different materials I > had, so I never got the set of drawings from him. > > If you want a copy of Sean-Thomas's drawings, I know that > several people on the PSN mailing list got them from > Sean-Thomas a few years ago. Perhaps one of them would be > willing to copy their set for you. If you would like, I can > request this on the mailing list for you. > > Keith > > ps: Your english is fine! > > ----- Original Message ----- > From: Serhan BASTURK > To: kpayea@.............. > Sent: Saturday, November 15, 2003 12:18 PM > Subject: About Leafspring Vertical Broadband Seismometer > > Dear Sir; > > My name is Serhan Basturk. i am 17 years old and living in > Turkey /Istanbul. > i and my friend would to build an vertical seismometer. we > found some informations about the A Leafspring Broadband > Vertical Seismometer by Sean-Thomas Morrissey. i would to > contat with him. but i heard that he died several months > ago and i am very sad about that... so i contacted with > Brian J. Mitchell, Professor of Geophysics Dept. of Earth > and Atmospheric Sciences Saint Louis University. but he > said "Dear Serhan--Sean Morrissey died several months ago > and nobody here is doing instrumental work. He was working > only on developing a horizontal instrument.I am sorry that > I cannot be of help." > then i contacted with Larry Cochrane. he told me about > you. i surfed on your web pages > www.bryantlabs.net/seismo.html > and saw that you > already built an another one. congrulations about! i hope > we will same, too :) so i think that you have the copies > of these plans. and i hope you can help us, sir. > > but i need that plans of these vertical seismometer to > build a new one which belong to us. here it's very > expensive to buy an seismometer and we are building for > our school a seismic station. the student who are 3-4 > years older than us built one lehman last year. 2-3 years > older than us are working for an another at the moment. > but we are in need of an vertical one. sir can you help > us? if you have this plans we are ready to pay about > posting and copy new plans cost. sir, there are only 9 > plans at web. and Thomas-Sean wrote:"The best way to get a > current set of about 20 pages of this documentation is to > send me your address (or label) and 5 ea 33cent ps. I will > provide the copies and an envelope." > > but as i said we can't reach these plans. i will be > waiting for your answer... > Thank you very much. > > > Yours Faithfully Sincerly > Serhan Basturk > > PS: sorry about my poor english. we are learning german at > the moment. i hope you can understand me :) > Hi all,

Why not go the Sean's website - it's still there.
http://www.eas.slu.edu/People/STMorrissey/index.html

Raul

kpayea wrote:
Hello PSN List:
 
I got this email from Serhan recently, and we are hoping you can help.  Do any of you have the document package on Sean-Thomas Morrissey's VBB seismometer?  I never got the package from him, but I seem to remember that some of you did.  Let us know if you could make a set of copies and mail them to Serhan.
 
Thanks!
 
        Keith
 
Keith Payea
Bryant Labs
kpayea@..............
www.bryantlabs.net
(707) 566-8935
----- Original Message -----
To: kpayea
Sent: Friday, November 21, 2003 6:35 AM
Subject: Re: About Leafspring Vertical Broadband Seismometer

Dear Keith;
 
Thank you very much about your interesting.
 
I have all of photographs and schematics on your web page. but it would be good when we got the Sean Thomas' plans, too. i don't know exactly what to do. so if you request that on PSN mailing list(?) it would be really good. Can you really help me about that?
 
Yours,
Serhan Baştürk
----- Original Message -----
From: kpayea
Sent: Monday, November 17, 2003 4:31 AM
Subject: Re: About Leafspring Vertical Broadband Seismometer

Hello:
 
It is sad that we lost Sean-Thomas.  He was an excellent source of information for us Amateur Seismologists.
 
The only documents I have are the photographs and the schematics on my web page.  I don't have any mechanical drawings of my Seismometer.  It was based loosely on Sean-Thomas's design, but built with different materials I had, so I never got the set of drawings from him.
 
If you want a copy of Sean-Thomas's drawings, I know that several people on the PSN mailing list got them from Sean-Thomas a few years ago.  Perhaps one of them would be willing to copy their set for you.  If you would like, I can request this on the mailing list for you.
 
Keith
 
ps:  Your english is fine! 
----- Original Message -----
Sent: Saturday, November 15, 2003 12:18 PM
Subject: About Leafspring Vertical Broadband Seismometer

Dear Sir;

My name is Serhan Basturk. i am 17 years old and living in Turkey /Istanbul.
i and my friend would to build an vertical seismometer. we found some informations about the A Leafspring Broadband Vertical Seismometer by Sean-Thomas Morrissey. i would to contat with him. but i heard that he died several months ago and i am very sad about that... so i contacted with Brian J. Mitchell, Professor of Geophysics Dept. of Earth and Atmospheric Sciences Saint Louis University. but he said "Dear Serhan--Sean Morrissey died several months ago and nobody here is doing instrumental work. He was working only on developing a horizontal instrument.I am sorry that I cannot be of help."
then i contacted with Larry Cochrane. he told me about you. i surfed on your web pages www.bryantlabs.net/seismo.html and saw that you already built an another one. congrulations about! i hope we will same, too :) so i think that you have the copies of these plans. and i hope you can help us, sir.  
 
but i need that plans of these vertical seismometer to build a new one which belong to us. here it's very expensive to buy an seismometer and we are building for our school a seismic station. the student who are 3-4 years older than us built one lehman last year. 2-3 years older than us are working for an another at the moment. but we are in need of an vertical one. sir can you help us? if you have this plans we are ready to pay about posting and copy new plans cost. sir, there are only 9 plans at web. and Thomas-Sean wrote:"The best way to get a current set of about 20 pages of this documentation is to send me your address (or label) and 5 ea 33cent ps. I will provide the copies and an envelope."
 
but as i said we can't reach these plans. i will be waiting for your answer...
Thank you very much.


Yours Faithfully Sincerly
Serhan Basturk
 
PS: sorry about my poor english. we are learning german at the moment. i hope you can understand me :)
Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer From: "kpayea" kpayea@........... Date: Sat, 22 Nov 2003 10:02:30 -0800 If I remember correctly, not everything was scanned and posted on the = web site. Sean-Thomas offered a more complete set if one sent him = postage and an envelope. That's what Serhan is after. Tell us if you = know otherwise - if everything possible IS on the web site and not = available in some other form. Thanks, Keith ----- Original Message -----=20 From: Raul Alvarez=20 To: psn-l@................. Sent: Saturday, November 22, 2003 4:15 AM Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer Hi all, Why not go the Sean's website - it's still there. http://www.eas.slu.edu/People/STMorrissey/index.html Raul kpayea wrote: Hello PSN List: I got this email from Serhan recently, and we are hoping you can = help. Do any of you have the document package on Sean-Thomas = Morrissey's VBB seismometer? I never got the package from him, but I = seem to remember that some of you did. Let us know if you could make a = set of copies and mail them to Serhan. Thanks! Keith Keith Payea Bryant Labs kpayea@.............. www.bryantlabs.net (707) 566-8935 ----- Original Message -----=20 From: Serhan BASTURK=20 To: kpayea=20 Sent: Friday, November 21, 2003 6:35 AM Subject: Re: About Leafspring Vertical Broadband Seismometer Dear Keith; Thank you very much about your interesting. I have all of photographs and schematics on your web page. but it = would be good when we got the Sean Thomas' plans, too. i don't know = exactly what to do. so if you request that on PSN mailing list(?) it = would be really good. Can you really help me about that? Yours, Serhan Ba=FEt=FCrk ----- Original Message -----=20 From: kpayea=20 To: Serhan BASTURK=20 Sent: Monday, November 17, 2003 4:31 AM Subject: Re: About Leafspring Vertical Broadband Seismometer Hello: It is sad that we lost Sean-Thomas. He was an excellent source = of information for us Amateur Seismologists. The only documents I have are the photographs and the schematics = on my web page. I don't have any mechanical drawings of my Seismometer. = It was based loosely on Sean-Thomas's design, but built with different = materials I had, so I never got the set of drawings from him. If you want a copy of Sean-Thomas's drawings, I know that = several people on the PSN mailing list got them from Sean-Thomas a few = years ago. Perhaps one of them would be willing to copy their set for = you. If you would like, I can request this on the mailing list for you. Keith ps: Your english is fine! =20 ----- Original Message -----=20 From: Serhan BASTURK=20 To: kpayea@................. Sent: Saturday, November 15, 2003 12:18 PM Subject: About Leafspring Vertical Broadband Seismometer Dear Sir; My name is Serhan Basturk. i am 17 years old and living in = Turkey /Istanbul. i and my friend would to build an vertical seismometer. we = found some informations about the A Leafspring Broadband Vertical = Seismometer by Sean-Thomas Morrissey. i would to contat with him. but i = heard that he died several months ago and i am very sad about that... so = i contacted with Brian J. Mitchell, Professor of Geophysics Dept. of = Earth and Atmospheric Sciences Saint Louis University. but he said "Dear = Serhan--Sean Morrissey died several months ago and nobody here is doing = instrumental work. He was working only on developing a horizontal = instrument.I am sorry that I cannot be of help." then i contacted with Larry Cochrane. he told me about you. i = surfed on your web pages www.bryantlabs.net/seismo.html and saw that you = already built an another one. congrulations about! i hope we will same, = too :) so i think that you have the copies of these plans. and i hope = you can help us, sir. =20 but i need that plans of these vertical seismometer to build a = new one which belong to us. here it's very expensive to buy an = seismometer and we are building for our school a seismic station. the = student who are 3-4 years older than us built one lehman last year. 2-3 = years older than us are working for an another at the moment. but we are = in need of an vertical one. sir can you help us? if you have this plans = we are ready to pay about posting and copy new plans cost. sir, there = are only 9 plans at web. and Thomas-Sean wrote:"The best way to get a = current set of about 20 pages of this documentation is to send me your = address (or label) and 5 ea 33cent ps. I will provide the copies and an = envelope." but as i said we can't reach these plans. i will be waiting = for your answer...=20 Thank you very much. Yours Faithfully Sincerly Serhan Basturk PS: sorry about my poor english. we are learning german at the = moment. i hope you can understand me :)
If I remember correctly, not everything = was scanned=20 and posted on the web site.  Sean-Thomas offered a more complete = set if one=20 sent him postage and an envelope.  That's what Serhan is = after.  Tell=20 us if you know otherwise - if everything possible IS on the web site and = not=20 available in some other form.
 
Thanks,
 
    Keith
----- Original Message -----
From:=20 Raul = Alvarez=20
Sent: Saturday, November 22, = 2003 4:15=20 AM
Subject: Re: PSN: Re: About = Leafspring=20 Vertical Broadband Seismometer

Hi all,

Why not go the Sean's website - it's = still=20 there.
http://www.= eas.slu.edu/People/STMorrissey/index.html

Raul

kpayea=20 wrote:
Hello PSN List:
 
I got this email from Serhan = recently, and we=20 are hoping you can help.  Do any of you have the document = package on=20 Sean-Thomas Morrissey's VBB seismometer?  I never got the = package from=20 him, but I seem to remember that some of you did.  Let us know = if you=20 could make a set of copies and mail them to Serhan.
 
Thanks!
 
       =20 Keith
 
Keith Payea
Bryant Labs
kpayea@..............
www.bryantlabs.net
(707)=20 566-8935
-----=20 Original Message ----- From:=20 Serhan BASTURK To:=20 kpayea=20 Sent:=20 Friday, November 21, 2003 6:35 AM Subject:=20 Re: About Leafspring Vertical Broadband Seismometer

Dear Keith;
 
Thank you very much about your=20 interesting.
 
I have=20 all of photographs and schematics on your web page. but it = would be=20 good when we got the Sean Thomas' plans, too. i don't know exactly = what to=20 do. so if you request that on PSN mailing list(?) it would = be=20 really good. Can you really help me about that?
 
Yours,
Serhan Ba=FEt=FCrk
-----=20 Original Message ----- From:=20 kpayea=20 To:=20 Serhan BASTURK = Sent:=20 Monday, November 17, 2003 4:31 AM Subject:=20 Re: About Leafspring Vertical Broadband Seismometer

Hello:
 
It is sad that we lost = Sean-Thomas. =20 He was an excellent source of information for us Amateur=20 Seismologists.
 
The only documents I have are = the=20 photographs and the schematics on my web page.  I don't = have any=20 mechanical drawings of my Seismometer.  It was based = loosely on=20 Sean-Thomas's design, but built with different materials I had, = so I=20 never got the set of drawings from him.
 
If you want a copy of = Sean-Thomas's=20 drawings, I know that several people on the PSN mailing list got = them=20 from Sean-Thomas a few years ago.  Perhaps one of them = would be=20 willing to copy their set for you.  If you would like, I = can=20 request this on the mailing list for you.
 
Keith
 
ps:  Your english is = fine! =20
-----=20 Original Message ----- From:=20 Serhan BASTURK = To:=20 kpayea@.............. Sent:=20 Saturday, November 15, 2003 12:18 PM Subject:=20 About Leafspring Vertical Broadband Seismometer

Dear=20 Sir;

My name is Serhan Basturk. i am 17 years old and = living in=20 Turkey /Istanbul.
i and my friend would to build an vertical = seismometer. we=20 found some informations about the A Leafspring Broadband = Vertical=20 Seismometer by Sean-Thomas Morrissey. i = would to=20 contat with him. but i heard that he died several months ago = and i am=20 very sad about that... so i contacted with Brian J. Mitchell,=20 Professor of Geophysics Dept. of Earth and Atmospheric = Sciences Saint=20 Louis University. but he said "Dear Serhan--Sean Morrissey = died=20 several months ago and nobody here is doing instrumental work. = He was=20 working only on developing a horizontal instrument.I am sorry = that I=20 cannot be of help."
then i contacted with Larry Cochrane. he = told me=20 about you. i surfed on your web pages www.bryantlabs.net/seismo.= html=20 and saw that you already built an another one. congrulations = about! i=20 hope we will same, too :) so i think that you have the copies = of these=20 plans. and i hope you can help us, sir.=20  
 
but i=20 need that plans of these vertical seismometer to build a new = one which=20 belong to us. here it's very expensive to buy an seismometer = and we=20 are building for our school a seismic station. the student who = are 3-4=20 years older than us built one lehman last year. 2-3 years = older than=20 us are working for an another at the moment. but we are in = need of an=20 vertical one. sir can you help us? if you have this plans = we are=20 ready to pay about posting and copy new plans cost. sir, = there are=20 only 9 plans at web. and Thomas-Sean wrote:"The best way to = get a=20 current set of about 20 pages of this documentation is to send = me your=20 address (or label) and 5 ea 33cent ps. I will provide the = copies and=20 an envelope."
 
but=20 as i said we can't reach these plans. i will be waiting for = your=20 answer...
Thank=20 you very much.


Yours Faithfully=20 Sincerly
Serhan Basturk
 
PS: sorry about my poor = english. we are=20 learning german at the moment. i hope you can understand me=20 = :)
Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer From: Raul Alvarez ralvarez@........ Date: Sat, 22 Nov 2003 15:17:57 -0700 Hi Keith, All I have is what I downloaded from his site shortly after his passing. And, I just relaized that was before my system crashed, so I may not have it anymore. Will check the old hard drive to see if it still there. Raul kpayea wrote: > If I remember correctly, not everything was scanned and posted on the > web site. Sean-Thomas offered a more complete set if one sent him > postage and an envelope. That's what Serhan is after. Tell us if you > know otherwise - if everything possible IS on the web site and not > available in some other form. > > Thanks, > > Keith > > ----- Original Message ----- > From: Raul Alvarez > To: psn-l@.............. > Sent: Saturday, November 22, 2003 4:15 AM > Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer > > Hi all, > > Why not go the Sean's website - it's still there. > http://www.eas.slu.edu/People/STMorrissey/index.html > > Raul > > kpayea wrote: > >> Hello PSN List: >> >> I got this email from Serhan recently, and we are hoping you can >> help. Do any of you have the document package on Sean-Thomas >> Morrissey's VBB seismometer? I never got the package from him, >> but I seem to remember that some of you did. Let us know if you >> could make a set of copies and mail them to Serhan. >> >> Thanks! >> >> Keith >> >> Keith Payea >> Bryant Labs >> kpayea@.............. >> www.bryantlabs.net >> (707) 566-8935 >> >> ----- Original Message ----- >> From: Serhan BASTURK >> To: kpayea >> Sent: Friday, November 21, 2003 6:35 AM >> Subject: Re: About Leafspring Vertical Broadband Seismometer >> >> Dear Keith; >> >> Thank you very much about your interesting. >> >> I have all of photographs and schematics on your web page. >> but it would be good when we got the Sean Thomas' plans, too. >> i don't know exactly what to do. so if you request that on >> PSN mailing list(?) it would be really good. Can you >> really help me about that? >> >> Yours, >> Serhan Baştürk >> >> ----- Original Message ----- >> From: kpayea >> To: Serhan BASTURK >> Sent: Monday, November 17, 2003 4:31 AM >> Subject: Re: About Leafspring Vertical Broadband Seismometer >> >> Hello: >> >> It is sad that we lost Sean-Thomas. He was an excellent >> source of information for us Amateur Seismologists. >> >> The only documents I have are the photographs and the >> schematics on my web page. I don't have any mechanical >> drawings of my Seismometer. It was based loosely on >> Sean-Thomas's design, but built with different materials >> I had, so I never got the set of drawings from him. >> >> If you want a copy of Sean-Thomas's drawings, I know that >> several people on the PSN mailing list got them from >> Sean-Thomas a few years ago. Perhaps one of them would >> be willing to copy their set for you. If you would like, >> I can request this on the mailing list for you. >> >> Keith >> >> ps: Your english is fine! >> >> ----- Original Message ----- >> From: Serhan BASTURK >> To: kpayea@.............. >> Sent: Saturday, November 15, 2003 12:18 PM >> Subject: About Leafspring Vertical Broadband Seismometer >> >> Dear Sir; >> >> My name is Serhan Basturk. i am 17 years old and >> living in Turkey /Istanbul. >> i and my friend would to build an vertical >> seismometer. we found some informations about the A >> Leafspring Broadband Vertical Seismometer by >> Sean-Thomas Morrissey. i would to contat with him. >> but i heard that he died several months ago and i am >> very sad about that... so i contacted with Brian J. >> Mitchell, Professor of Geophysics Dept. of Earth and >> Atmospheric Sciences Saint Louis University. but he >> said "Dear Serhan--Sean Morrissey died several months >> ago and nobody here is doing instrumental work. He >> was working only on developing a horizontal >> instrument.I am sorry that I cannot be of help." >> then i contacted with Larry Cochrane. he told me >> about you. i surfed on your web pages >> www.bryantlabs.net/seismo.html >> and saw that >> you already built an another one. congrulations >> about! i hope we will same, too :) so i think that >> you have the copies of these plans. and i hope you >> can help us, sir. >> >> but i need that plans of these vertical seismometer >> to build a new one which belong to us. here it's very >> expensive to buy an seismometer and we are building >> for our school a seismic station. the student who are >> 3-4 years older than us built one lehman last year. >> 2-3 years older than us are working for an another at >> the moment. but we are in need of an vertical one. >> sir can you help us? if you have this plans we are >> ready to pay about posting and copy new plans cost. >> sir, there are only 9 plans at web. and Thomas-Sean >> wrote:"The best way to get a current set of about 20 >> pages of this documentation is to send me your >> address (or label) and 5 ea 33cent ps. I will provide >> the copies and an envelope." >> >> but as i said we can't reach these plans. i will be >> waiting for your answer... >> Thank you very much. >> >> >> Yours Faithfully Sincerly >> Serhan Basturk >> >> PS: sorry about my poor english. we are learning >> german at the moment. i hope you can understand me :) >> Hi Keith,

All I have is what I downloaded from his site shortly after his passing. And, I just relaized that was before my system crashed, so I may not have it anymore.  Will check the old hard drive to see if it still there.

Raul

kpayea wrote:
If I remember correctly, not everything was scanned and posted on the web site.  Sean-Thomas offered a more complete set if one sent him postage and an envelope.  That's what Serhan is after.  Tell us if you know otherwise - if everything possible IS on the web site and not available in some other form.
 
Thanks,
 
    Keith
----- Original Message -----
Sent: Saturday, November 22, 2003 4:15 AM
Subject: Re: PSN: Re: About Leafspring Vertical Broadband Seismometer

Hi all,

Why not go the Sean's website - it's still there.
http://www.eas.slu.edu/People/STMorrissey/index.html

Raul

kpayea wrote:
Hello PSN List:
 
I got this email from Serhan recently, and we are hoping you can help.  Do any of you have the document package on Sean-Thomas Morrissey's VBB seismometer?  I never got the package from him, but I seem to remember that some of you did.  Let us know if you could make a set of copies and mail them to Serhan.
 
Thanks!
 
        Keith
 
Keith Payea
Bryant Labs
kpayea@..............
www.bryantlabs.net
(707) 566-8935
----- Original Message -----
To: kpayea
Sent: Friday, November 21, 2003 6:35 AM
Subject: Re: About Leafspring Vertical Broadband Seismometer

Dear Keith;
 
Thank you very much about your interesting.
 
I have all of photographs and schematics on your web page. but it would be good when we got the Sean Thomas' plans, too. i don't know exactly what to do. so if you request that on PSN mailing list(?) it would be really good. Can you really help me about that?
 
Yours,
Serhan Baştürk
----- Original Message -----
From: kpayea
Sent: Monday, November 17, 2003 4:31 AM
Subject: Re: About Leafspring Vertical Broadband Seismometer

Hello:
 
It is sad that we lost Sean-Thomas.  He was an excellent source of information for us Amateur Seismologists.
 
The only documents I have are the photographs and the schematics on my web page.  I don't have any mechanical drawings of my Seismometer.  It was based loosely on Sean-Thomas's design, but built with different materials I had, so I never got the set of drawings from him.
 
If you want a copy of Sean-Thomas's drawings, I know that several people on the PSN mailing list got them from Sean-Thomas a few years ago.  Perhaps one of them would be willing to copy their set for you.  If you would like, I can request this on the mailing list for you.
 
Keith
 
ps:  Your english is fine! 
----- Original Message -----
Sent: Saturday, November 15, 2003 12:18 PM
Subject: About Leafspring Vertical Broadband Seismometer

Dear Sir;

My name is Serhan Basturk. i am 17 years old and living in Turkey /Istanbul.
i and my friend would to build an vertical seismometer. we found some informations about the A Leafspring Broadband Vertical Seismometer by Sean-Thomas Morrissey. i would to contat with him. but i heard that he died several months ago and i am very sad about that... so i contacted with Brian J. Mitchell, Professor of Geophysics Dept. of Earth and Atmospheric Sciences Saint Louis University. but he said "Dear Serhan--Sean Morrissey died several months ago and nobody here is doing instrumental work. He was working only on developing a horizontal instrument.I am sorry that I cannot be of help."
then i contacted with Larry Cochrane. he told me about you. i surfed on your web pages www.bryantlabs.net/seismo.html and saw that you already built an another one. congrulations about! i hope we will same, too :) so i think that you have the copies of these plans. and i hope you can help us, sir.  
 
but i need that plans of these vertical seismometer to build a new one which belong to us. here it's very expensive to buy an seismometer and we are building for our school a seismic station. the student who are 3-4 years older than us built one lehman last year. 2-3 years older than us are working for an another at the moment. but we are in need of an vertical one. sir can you help us? if you have this plans we are ready to pay about posting and copy new plans cost. sir, there are only 9 plans at web. and Thomas-Sean wrote:"The best way to get a current set of about 20 pages of this documentation is to send me your address (or label) and 5 ea 33cent ps. I will provide the copies and an envelope."
 
but as i said we can't reach these plans. i will be waiting for your answer...
Thank you very much.


Yours Faithfully Sincerly
Serhan Basturk
 
PS: sorry about my poor english. we are learning german at the moment. i hope you can understand me :)
Subject: Old Earthquake From: Bobhelenmcclure@....... Date: Sat, 29 Nov 2003 01:21:07 EST Hi all, Take a look at this article. Scientists say old Japanese papers show a huge magnitude nine earthquake struck north-western America 300 years ago. http://news.bbc.co.uk/2/hi/science/nature/3247142.stm Regards, Bob McClure Locust Valley, NY, USA 40.882N 73.582W Hi all,

  Take a look at this article.

    Scientists say old Japanese papers show a huge magnitu= de nine earthquake struck north-western America 300 years ago.


        http://news.bbc.co.uk/2/hi/scienc= e/nature/3247142.stm

Regards,

Bob McClure
Locust Valley, NY, USA
40.882N  73.582W Subject: Re: Old Earthquake From: Bob Fryer bfryer@............ Date: Sat, 29 Nov 2003 14:44:36 -0800 Hello, It is good to see that some people think that this is news. This info appeared in Nature magazine in 1995 or 1996. I was fortunate to have dinner with Kenji Satake after a conference examining the event. It was a Western States Seismic awareness conference in Seaside, Oregon. Take care, Bob Fryer Beaverton, Oregon >Hi all, > > Take a look at this article. > > Scientists say old Japanese papers show a huge magnitude nine >earthquake struck north-western America 300 years ago. > > http://news.bbc.co.uk/2/hi/science/nature/3247142.stm > >Regards, > >Bob McClure >Locust Valley, NY, USA >40.882N 73.582W -- earthquake WARNING research Animals, People, Scientific Evidence www.earthquakewarning.org __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: EMail check From: ChrisAtUpw@....... Date: Sat, 29 Nov 2003 18:47:50 EST EMail return check, CJSC EMail return check,
CJSC Subject: Re: EMail check From: "Larry Cochrane" lcochrane@.............. Date: Sat, 29 Nov 2003 17:29:21 -0800 Hi Everyone, Please don't respond to Chris's email using the PSN-L list. He and other AOL members are not getting emails from my server. AOL continues to block my DSL IP address. I have contacted them 6 or 7 times and each time they say they will whitelist my server but it never happens, except once for a few days. At this point I have given up. I can't force AOL to except email from my server.... -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: To: Sent: Saturday, November 29, 2003 3:47 PM Subject: EMail check > EMail return check, > CJSC > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Shillong earthquake 12 june 1897... reference From: =?iso-8859-1?q?albert=20kharshiing?= adkharshiing@........... Date: Sun, 30 Nov 2003 10:03:41 +0000 (GMT) Hi all, To those who are interested in Great Assam/Shillong earthquake 12 june 1897... Sufficient layman's reference about this event have been recorded by the then German Missioneries reporting from at various places of the Shillong plateau. The records are compiled in the book "History of catholic Mission in North East India". Albert ________________________________________________________________________ Yahoo! India Mobile: Download the latest polyphonic ringtones. Go to http://in.mobile.yahoo.com __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Shillong earthquake 12 june 1897... reference From: =?iso-8859-1?q?albert=20kharshiing?= adkharshiing@........... Date: Sun, 30 Nov 2003 10:04:37 +0000 (GMT) Hi all, To those who are interested in Great Assam/Shillong earthquake 12 june 1897... Sufficient layman's reference about this event have been recorded by the then German Missioneries reporting from at various places of the Shillong plateau. The records are compiled in the book "History of catholic Mission in North East India" by Becker Albert ________________________________________________________________________ Yahoo! India Mobile: Download the latest polyphonic ringtones. Go to http://in.mobile.yahoo.com __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: A "new" seismo base plate adjustment screw/s approach From: "Meredith Lamb" meredithlamb@............. Date: Sat, 6 Dec 2003 21:53:51 -0700 Hi all, Have tried researching this on the PSN web site search function, but I see no reference. It maybe nothing new...(?)...but it sure works great! Best of all, there is little to no adjustment screw wobble, with quite solid firm movement.....and no base plate bolt threading (tapping) to be done. The normal "fitting" of the nuts to the bolts, alone by themselves is quite loose and non-exact....but not in this application. Basically this approach uses a standard bolt and three nuts, but, the seismo base has only some predetermined chamfer widening of the bolt hole/s that is larger than the bolt (adjustment screw) diameter, but only wide enough to make contact with the chamfer on the nuts. The nuts themselves have 6 planes (hexagonal outer shape), and some chamfering on the outside top/bottom outside edges. Non-chamfered nuts are useless. One nut is above the other two; this is a locking nut only....which may or maynot be absolutely necessary depending on how much tension the other two nuts are adjusted too. A crude guide to trying/using this; could be the "base material" I used. It was actually a hardened tool steel machinist "parallel", that had two holes through the item. The actual hole/s were .5" in diameter but the chamfer was wider and made full contact with the nuts chamfer (.575"). The actual bolt thread diameter was .311". Here, the hole drilling and chamfer was done with a likely professional grade machine somewhere of course, but it was likely done straight into the item without a lateral tilt offset. If your hole and chamfer is done by hand, the bolt may not be exactly standing upright 180 degrees to the "base plate" material when installed. Visually for this "model", I couldn't see any bolt tilt. One nut is threaded on the bolt, then passed through the base material, and the other nut is threaded on lightly finger tightened to where....the bolt can be turned (adjusted) but the nuts don't. With the two nuts on the bolt thread, increased turning of "a" nut, narrows the space for the inside bolt thread, and lessens the "normal" bolt freedom to wobble. Increased finger tightening of "a" nut makes this "bolt wobble" almost nil, and of course makes it harder to turn the bolt (adjustment screw), but the firmness of the approach seems to enhance the mechanical stability quite noteably. One might call this a holding/tension/friction adjustment nut. A wrench isn't needed of course for this or the locking nut. One may have a tough time trying to use non-chamfered holes for this approach; most of my attempts failed with various material. Various large drills (movement limited) could be used for creating a chamfer; but their is other tools for this also. One "could" epoxy the nut/s. Epoxy one or both after adjusting the nut/s to your satisfaction. Its possible the top nut "could" remain free of any cement, to adjust the fitting tension on the nut to their satisfaction, whenever they wish For smooth bolt thread movement action, I'd suggest that the bolt/s be re-die-ed to eliminate burrs, or clogging matterial that might be in the threads. I'd look for a straight bolt thread; theres no use buying a bent bolt. One might also consider that in the base plate hole and between the nuts is a air space that might serve as a "lubricant reservoir", for any of a variety of such lubricants or types for various material. A thicker variety of non-liquifying grease might be a good bet (auto grease) for the iron/steel bolts/nuts functioning over time, as well as anti-rust prevention. One might try this out on scrap material first before plunging into using it on the planned for base plate installation. One doesn't need expensive adjustment bolts/nuts with this route. Merry Christmas and happy new year everyone! Take care, Meredith Lamb

Hi all,
 
Have tried researching this on the PSN web site search function, but I see no reference. 
It maybe nothing new...(?)...but it sure works great!  Best of all, there is little to no adjustment
screw wobble, with quite solid firm movement.....and no base plate bolt threading (tapping)
to be done.  The normal "fitting" of the nuts to the bolts, alone by themselves is quite loose
and non-exact....but not in this application.
 
Basically this approach uses a standard bolt and three nuts, but, the seismo base has
only some predetermined chamfer widening of the bolt hole/s that is larger than the bolt
(adjustment screw) diameter, but only wide enough to make contact with the chamfer on
the nuts.
 
The nuts themselves have 6 planes (hexagonal outer shape), and some chamfering on
the outside top/bottom outside edges.  Non-chamfered nuts are useless.
 
One nut is above the other two; this is a locking nut only....which may or maynot be
absolutely necessary depending on how much tension the other two nuts are adjusted too.
 
A crude guide to trying/using this; could be the "base material" I used.  It was actually
a hardened tool steel machinist "parallel", that had two holes through the item.  The actual
hole/s were .5" in diameter but the chamfer was wider and made full contact with the nuts
chamfer (.575").  The actual bolt thread diameter was .311".  Here, the hole drilling and
chamfer was done with a likely professional grade machine somewhere of course, but it
was likely done straight into the item without a lateral tilt offset.  If your hole and chamfer is
done by hand, the bolt may not be exactly standing upright 180 degrees to the "base plate"
material when installed.   Visually for this "model", I couldn't see any bolt tilt.
 
One nut is threaded on the bolt, then passed through the base material, and the other
nut is threaded on lightly finger tightened to where....the bolt can be turned (adjusted) but the
nuts don't.   With the two nuts on the bolt thread, increased turning of "a" nut, narrows
the space for the inside bolt thread, and lessens the "normal" bolt freedom to wobble.
Increased finger tightening of "a" nut makes this "bolt wobble" almost nil, and of course
makes it harder to turn the bolt (adjustment screw), but the firmness of the approach
seems to enhance the mechanical stability quite noteably.  One might call this a
holding/tension/friction adjustment nut.  A wrench isn't needed of course for this or
the locking nut.
 
One may have a tough time trying to use non-chamfered holes for this approach;
most of my attempts failed with various material.  Various large drills (movement
limited) could be used for creating a chamfer; but their is other tools for this also.
 
One "could" epoxy the nut/s.  Epoxy one or both after adjusting the nut/s to  your
satisfaction.  Its possible the top nut "could" remain free of any cement, to adjust
the fitting tension on the nut to their satisfaction, whenever they wish 
 
For smooth bolt thread movement action,  I'd suggest that the bolt/s be re-die-ed to
eliminate burrs, or clogging matterial that might be in the threads.  I'd look for a
straight bolt thread; theres no use buying a bent bolt.
 
One might also consider that in the base plate hole and between the nuts is a air
space that might serve as a "lubricant reservoir", for any of a variety of such lubricants
or types for various material.   A thicker variety of non-liquifying grease might be a good
bet (auto grease) for the iron/steel bolts/nuts functioning over time, as well as anti-rust
prevention.
 
One might try this out on scrap material first before plunging into using it on the planned
for base plate installation.  One doesn't need expensive adjustment bolts/nuts with this
route.
 
Merry Christmas and happy new year everyone!
 
Take care, Meredith Lamb
 
 

Subject: Re: A "new" seismo base plate adjustment screw/s approach From: John or Jan Lahr johnjan@........ Date: Sun, 07 Dec 2003 20:30:53 -0700 Hi Meredith, Sounds like a good design! I had to look up the word "chamfer" "To cut off the edge or corner of; to bevel." I guess you would chamfer both sides of the hole in the base plate. I would seem that one would have to epoxy the lower nut at least to prevent if from turning, but maybe a lock washer above and below would prevent that and avoid the possibility of getting epoxy in the wrong place. Cheers, John At 09:53 PM 12/6/2003, you wrote: >Hi all, > >Have tried researching this on the PSN web site search function, but I see >no reference. >It maybe nothing new...(?)...but it sure works great! __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A "new" seismo base plate adjustment screw/s approach From: "Meredith Lamb" meredithlamb@............. Date: Mon, 8 Dec 2003 11:39:07 -0700 Hi John and all, Perhaps the best line of use for this, could be for either very thin thickness base materials (~1/8" or so), or those occasional items found with holes already present, but which don't offer a ready immediate solution for the standard threading approach. It could also work where threaded holes are present, but the necessary size bolts are absent. I think most American made threaded nuts have some amount of a 30 degree bevel/chamfer moreso on one side than the other side. Even the little 6/32 size seems too, which is encouraging for this application. Of course, its the larger sizes that offer the greatest amount of chamfer area, that will make contact with the chamfered walls of the base plate. I checked my table top model for this aspect of the possibility of the epoxy (or whatever) seeping through. By holding the model up between my eyes and a light source, while cupping the one side, on two of them there was no light (a solid contact); but the third one did show some small areas of light. That of course, would mean either that the base plate chamfer was insufficient and/or the nut/s themselves were too blame; so either a better/deeper chamfer can be done and other nuts substituted and observed for light leaks. As things can go, I'd say that there will always be the possibility that it when a glue/adhesive is applied, there is a risk of the material getting on the bolt threads. Its necessary to make the base plate chamfer/s slightly wider than the nut thats used, so full contact is made. As to the subject of "epoxy"; as a adhesive too me and my experience, its kind of a failure prone material to use. It might even be smarter to use a rubber like material like clear silicon caulking as it can be removed should the need arise; and/or a adjustment on the top side may seem to be indicated in the future after installation and use for some time. One aspect of this approach, is that one can use the universal metric or American or any other regional standard bolt/nut sizes; as long as as they have the right base plate hole, or hole making drill and or chamfer/bevel tools. Interesting thought John, on the lock washer idea. I'd think one would have to "crunch" the lock washing into the bevel shaped depression on the base plate to have it work; and, it maybe only applicable to one side of the plate. They usually "bite into" most materials; but not usually the nuts. Theirs afew kinds of lock washers around; one might have to experiment to see what works. Most amateurs will likely use aluminum as the base plate....its possible to even torque a nut in enough to where parts of the nut/s dig slightly into the aluminum on one side of the plate. When torqueing, I'd temporarily use a flat washer on one side (nut), so that, that other side does dig in....you will likely need the one clean side for adjustments movement. Its also possible that this action might upset the angle of the bolt to the base however. Personally, I think I'd avoid this approach. Take care, Meredith > [Original Message] > From: John or Jan Lahr > To: > Date: 12/7/2003 8:31:02 PM > Subject: Re: A "new" seismo base plate adjustment screw/s approach > > Hi Meredith, > > Sounds like a good design! I had to look up the word "chamfer" > "To cut off the edge or corner of; to bevel." I guess you would > chamfer both sides of the hole in the base plate. > ** Yes, there would be chamfer/bevel on each side of the base plate hole/s. > I would seem that one would have to epoxy the lower nut at least > to prevent if from turning, but maybe a lock washer above and below > would prevent that and avoid the possibility of getting epoxy in the > wrong place. > > Cheers, > John > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: 12/22/03 magnitude 6.5 event occurred 11 km (7 miles) NE of San Simeon, CA. From: "Steve Hammond" shammon1@............. Date: Mon, 22 Dec 2003 11:28:42 -0800 A strong earthquake occurred at 11:15:56 AM (PST) on Monday, December 22, 2003. The magnitude 6.5 event occurred 11 km (7 miles) NE of San Simeon, CA. The hypocentral depth is 8 km ( 5 miles). ---------------------------------------------------------------------------- ---- Magnitude 6.5 - regional moment magnitude (Mw) Time Monday, December 22, 2003 at 11:15:56 AM (PST) Monday, December 22, 2003 at 19:15:56 (UTC) Distance from San Simeon, CA - 11 km (7 miles) NE (49 degrees) Cambria, CA - 17 km (11 miles) N (356 degrees) Lake Nacimiento, CA - 20 km (13 miles) W (260 degrees) Paso Robles, CA - 39 km (24 miles) WNW (283 degrees) San Jose City Hall, CA - 195 km (121 miles) SSE (158 degrees) Coordinates 35 deg. 42.3 min. N (35.706N), 121 deg. 6.1 min. W (121.101W) Depth 7.6 km (4.7 miles) Location Quality Excellent __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: STM-8 Questions From: Mike Speed mike8s2@......... Date: Wed, 24 Dec 2003 07:21:22 -0800 (PST) I would like to build the STM-8 as close to what Sean had as possible and I have the following questions on the STM-8: On the schematic entitled, "Tiltmeter (and VRDT) Bridge Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98): 1) To what does the 10K resistor on the inverting input of A2 connect (6)? 2) To what does the 10K resistor on the inverting input of A3 connect (7)? On the "Block Diagram of the Electonics for the Leaf Spring Broadband Seismometer..." sheet (Rev: 25 Jan 98): 1) What is the schematic of the "Displacement Xducer Gain Amp and Filter 5X to 20X gain?" 2) What is the schematic of the "Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" 3) What is the schematic of the "VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?" Thank you, Greg L. Sharp mike8s2(at)hotmail.com --------------------------------- Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square
I would like to build the STM-8 as close to what Sean had as possible and I have the following questions on the STM-8:
 
 On the schematic entitled, "Tiltmeter (and VRDT) Bridge Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98):
 
 1) To what does the 10K resistor on the inverting input of A2 connect (6)?
 2) To what does the 10K resistor on the inverting input of A3 connect (7)?
 
On the "Block Diagram of the Electonics for the Leaf Spring Broadband Seismometer..." sheet (Rev: 25 Jan 98):
 
1) What is the schematic of the "Displacement Xducer Gain Amp and Filter 5X to 20X gain?"
 2) What is the schematic of the "Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?"
 3) What is the schematic of the "VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?"
 
Thank you,
 
Greg L. Sharp
 
mike8s2(at)hotmail.com

Do you Yahoo!?
Yahoo! Photos - Get your photo on the big screen in Times Square Subject: Re: STM-8 Questions From: "kpayea" kpayea@........... Date: Wed, 24 Dec 2003 09:00:02 -0800 Mike: Have a look at my web site (http://www.bryantlabs.net/VertSeis.html) for = some information on my version of the STM-8. The first thing to remember is that it appears that Sean-Thomas used = some electronics modules that he had in his lab for some of the = functions. They have features and parts that may not be used in the = STM-8. I think he also left many details out, "as an exercise for the = student" With that said, here's what I think the answers to you questions are: 1) The 10K resistor into A2 connects to the sine wave oscillator = output. In another drawing called "Bridge connection of the VRDT....", = he shows it connected to the phase 2 output of the oscillator = transformer, the signal called "Reference to Demod." in the upper right. 2) He doesn't call this out explicitly, but I believe that the 10K = resistor into A3 should connect to the other output phase from the = oscillator transformer. To make the circuit work right, you might have = to swap these two connections, depending on signal phases through the = system. 3) Those blocks refer to some circuitry shown at the bottom of another = drawing called "Block Diagram of Hardware Store Broadband Seismometer": "Displacement Xducer Gain Amp and Filter 5X to 20X gain?" refers to A1 = and it's related parts in the lower left. "Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" refers = to A2 and it's related parts in the lower middle. "VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?" are not = detailed anywhere that I know of. I assumed a simple op-amp stage with = a low pass filter at around 100 Hz to remove unwanted noise. The schematics on my web pages make an attempt to pull all of those = drawings together, with some changes made to use some suitable parts I = had on-hand, and because no engineer can ever leave well enough alone... =20 Good luck! Keith ----- Original Message -----=20 From: Mike Speed=20 To: PSN-L@................. Sent: Wednesday, December 24, 2003 7:21 AM Subject: STM-8 Questions I would like to build the STM-8 as close to what Sean had as possible = and I have the following questions on the STM-8: On the schematic entitled, "Tiltmeter (and VRDT) Bridge = Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98): 1) To what does the 10K resistor on the inverting input of A2 connect = (6)? 2) To what does the 10K resistor on the inverting input of A3 connect = (7)? On the "Block Diagram of the Electonics for the Leaf Spring Broadband = Seismometer..." sheet (Rev: 25 Jan 98): 1) What is the schematic of the "Displacement Xducer Gain Amp and = Filter 5X to 20X gain?" 2) What is the schematic of the "Integrator, Unity Gain = Instrumentation Amp 20 to 200 Seconds?" 3) What is the schematic of the "VBB Output Amplifier and Low Pass = Filter Gains 2X to 20X?" Thank you, Greg L. Sharp mike8s2(at)hotmail.com -------------------------------------------------------------------------= ----- Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square
Mike:
 
Have a look at my web site (http://www.bryantlabs.ne= t/VertSeis.html)=20 for some information on my version of the STM-8.
 
The first thing to remember is that it = appears that=20 Sean-Thomas used some electronics modules that he had in his lab for = some of the=20 functions.  They have features and parts that may not be used in = the=20 STM-8.  I think he also left many details out, "as an exercise for = the=20 student"
 
With that said, here's what I think the = answers to=20 you questions are:
 
1)  The 10K resistor into A2 = connects to the=20 sine wave oscillator output.  In another drawing called "Bridge = connection=20 of the VRDT....", he shows it connected to the phase 2 output of the = oscillator=20 transformer, the signal called "Reference to Demod." in the upper=20 right.
 
2)  He doesn't call this out = explicitly, but I=20 believe that the 10K resistor into A3 should connect to the other output = phase=20 from the oscillator transformer.  To make the circuit work right, = you might=20 have to swap these two connections, depending on signal phases through = the=20 system.
 
3)  Those blocks refer to some = circuitry shown=20 at the bottom of another drawing called "Block Diagram of Hardware Store = Broadband Seismometer":
"Displacement Xducer Gain Amp and Filter 5X to 20X gain?" refers = to A1=20 and it's related parts in the lower left.
 
"Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" = refers to=20 A2 and it's related parts in the lower middle.
 
"VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?" are = not=20 detailed anywhere that I know of.  I assumed a simple op-amp = stage with a=20 low pass filter at around 100 Hz to remove unwanted = noise.
The schematics on my web = pages make an=20 attempt to pull all of those drawings together, with some changes made = to use=20 some suitable parts I had on-hand, and because no engineer can ever = leave well=20 enough alone...
 
Good luck!
 
    Keith
 
----- Original Message -----
From:=20 Mike = Speed=20
Sent: Wednesday, December 24, = 2003 7:21=20 AM
Subject: STM-8 Questions

I would like to build the STM-8 as close to what Sean had as = possible and=20 I have the following questions on the STM-8:
 
 On the schematic entitled, "Tiltmeter (and VRDT) Bridge=20 Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98):
 
 1) To what does the 10K resistor on the inverting input of = A2=20 connect (6)?

 2) To what does the = 10K resistor=20 on the inverting input of A3 connect (7)?
 
On the "Block Diagram of the Electonics for the Leaf Spring = Broadband=20 Seismometer..." sheet (Rev: 25 Jan 98):
 
1) What is the schematic of the "Displacement Xducer Gain Amp and = Filter=20 5X to 20X gain?"
 2) What is the schematic of the "Integrator, = Unity=20 Gain Instrumentation Amp 20 to 200 Seconds?"
 3) What is the = schematic=20 of the "VBB Output Amplifier and Low Pass Filter Gains 2X to = 20X?"
 
Thank you,
 
Greg L. Sharp
 
mike8s2(at)hotmail.com

Do you Yahoo!?
Yahoo! Photos - Get=20 your photo on the big screen in Times = Square
Subject: Re: STM-8 Questions From: "kpayea" kpayea@........... Date: Wed, 24 Dec 2003 09:00:02 -0800 Mike: Have a look at my web site (http://www.bryantlabs.net/VertSeis.html) for = some information on my version of the STM-8. The first thing to remember is that it appears that Sean-Thomas used = some electronics modules that he had in his lab for some of the = functions. They have features and parts that may not be used in the = STM-8. I think he also left many details out, "as an exercise for the = student" With that said, here's what I think the answers to you questions are: 1) The 10K resistor into A2 connects to the sine wave oscillator = output. In another drawing called "Bridge connection of the VRDT....", = he shows it connected to the phase 2 output of the oscillator = transformer, the signal called "Reference to Demod." in the upper right. 2) He doesn't call this out explicitly, but I believe that the 10K = resistor into A3 should connect to the other output phase from the = oscillator transformer. To make the circuit work right, you might have = to swap these two connections, depending on signal phases through the = system. 3) Those blocks refer to some circuitry shown at the bottom of another = drawing called "Block Diagram of Hardware Store Broadband Seismometer": "Displacement Xducer Gain Amp and Filter 5X to 20X gain?" refers to A1 = and it's related parts in the lower left. "Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" refers = to A2 and it's related parts in the lower middle. "VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?" are not = detailed anywhere that I know of. I assumed a simple op-amp stage with = a low pass filter at around 100 Hz to remove unwanted noise. The schematics on my web pages make an attempt to pull all of those = drawings together, with some changes made to use some suitable parts I = had on-hand, and because no engineer can ever leave well enough alone... =20 Good luck! Keith ----- Original Message -----=20 From: Mike Speed=20 To: PSN-L@................. Sent: Wednesday, December 24, 2003 7:21 AM Subject: STM-8 Questions I would like to build the STM-8 as close to what Sean had as possible = and I have the following questions on the STM-8: On the schematic entitled, "Tiltmeter (and VRDT) Bridge = Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98): 1) To what does the 10K resistor on the inverting input of A2 connect = (6)? 2) To what does the 10K resistor on the inverting input of A3 connect = (7)? On the "Block Diagram of the Electonics for the Leaf Spring Broadband = Seismometer..." sheet (Rev: 25 Jan 98): 1) What is the schematic of the "Displacement Xducer Gain Amp and = Filter 5X to 20X gain?" 2) What is the schematic of the "Integrator, Unity Gain = Instrumentation Amp 20 to 200 Seconds?" 3) What is the schematic of the "VBB Output Amplifier and Low Pass = Filter Gains 2X to 20X?" Thank you, Greg L. Sharp mike8s2(at)hotmail.com -------------------------------------------------------------------------= ----- Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square
Mike:
 
Have a look at my web site (http://www.bryantlabs.ne= t/VertSeis.html)=20 for some information on my version of the STM-8.
 
The first thing to remember is that it = appears that=20 Sean-Thomas used some electronics modules that he had in his lab for = some of the=20 functions.  They have features and parts that may not be used in = the=20 STM-8.  I think he also left many details out, "as an exercise for = the=20 student"
 
With that said, here's what I think the = answers to=20 you questions are:
 
1)  The 10K resistor into A2 = connects to the=20 sine wave oscillator output.  In another drawing called "Bridge = connection=20 of the VRDT....", he shows it connected to the phase 2 output of the = oscillator=20 transformer, the signal called "Reference to Demod." in the upper=20 right.
 
2)  He doesn't call this out = explicitly, but I=20 believe that the 10K resistor into A3 should connect to the other output = phase=20 from the oscillator transformer.  To make the circuit work right, = you might=20 have to swap these two connections, depending on signal phases through = the=20 system.
 
3)  Those blocks refer to some = circuitry shown=20 at the bottom of another drawing called "Block Diagram of Hardware Store = Broadband Seismometer":
"Displacement Xducer Gain Amp and Filter 5X to 20X gain?" refers = to A1=20 and it's related parts in the lower left.
 
"Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" = refers to=20 A2 and it's related parts in the lower middle.
 
"VBB Output Amplifier and Low Pass Filter Gains 2X to 20X?" are = not=20 detailed anywhere that I know of.  I assumed a simple op-amp = stage with a=20 low pass filter at around 100 Hz to remove unwanted = noise.
The schematics on my web = pages make an=20 attempt to pull all of those drawings together, with some changes made = to use=20 some suitable parts I had on-hand, and because no engineer can ever = leave well=20 enough alone...
 
Good luck!
 
    Keith
 
----- Original Message -----
From:=20 Mike = Speed=20
Sent: Wednesday, December 24, = 2003 7:21=20 AM
Subject: STM-8 Questions

I would like to build the STM-8 as close to what Sean had as = possible and=20 I have the following questions on the STM-8:
 
 On the schematic entitled, "Tiltmeter (and VRDT) Bridge=20 Amplifier/Demodulator/Filter/DC Amplifier" (Rev 10/20/98):
 
 1) To what does the 10K resistor on the inverting input of = A2=20 connect (6)?

 2) To what does the = 10K resistor=20 on the inverting input of A3 connect (7)?
 
On the "Block Diagram of the Electonics for the Leaf Spring = Broadband=20 Seismometer..." sheet (Rev: 25 Jan 98):
 
1) What is the schematic of the "Displacement Xducer Gain Amp and = Filter=20 5X to 20X gain?"
 2) What is the schematic of the "Integrator, = Unity=20 Gain Instrumentation Amp 20 to 200 Seconds?"
 3) What is the = schematic=20 of the "VBB Output Amplifier and Low Pass Filter Gains 2X to = 20X?"
 
Thank you,
 
Greg L. Sharp
 
mike8s2(at)hotmail.com

Do you Yahoo!?
Yahoo! Photos - Get=20 your photo on the big screen in Times = Square Subject: Re: STM-8 Questions From: Mike Speed mike8s2@......... Date: Wed, 24 Dec 2003 09:17:08 -0800 (PST) >"Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" refers >to A2 and it's related parts in the lower middle. On the "Block Diagram of Hardware Store Broadband Seismometer...", what are the component values of the all the resistors and capacitors on A1? A2 says it is a "3 amp High CMRR X1 Gain." What is the exact configuration of A2? Greg --------------------------------- Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square

 
 
>"Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" refers >to A2 and it's related parts in the lower middle.
 
 
On the "Block Diagram of Hardware Store Broadband Seismometer...", what are the component values of the all the resistors and capacitors on A1?
 
A2 says it is a "3 amp High CMRR X1 Gain."  What is the exact configuration of A2?
 
Greg

Do you Yahoo!?
Yahoo! Photos - Get your photo on the big screen in Times Square Subject: Re: STM-8 Questions From: "kpayea" kpayea@........... Date: Wed, 24 Dec 2003 09:41:32 -0800 I interpreted the notes to mean that the three lower resistors in front = of A1 were 100K, the input cap was 0.25uF, the feedback resistor was = 464K, and the feedback cap was 0.01uF. In my implementation, I used an ordinary single op-amp for A2, as drawn. = It works fine, as long as you choose one (like the LM837 I used) with a = wide input voltage range. =20 If you decide to go the instrumentation amp route, I suggest you buy a = packaged one, like the AD620, rather than build one. To get good CMRR, = you need to have matched resistors all around the three op-amps. =20 Here's a link to an application note from National Semi: = http://www.national.com/ms/LB/LB-1.pdf Keith ----- Original Message -----=20 From: Mike Speed=20 To: psn-l@................. Sent: Wednesday, December 24, 2003 9:17 AM Subject: Re: STM-8 Questions >"Integrator, Unity Gain Instrumentation Amp 20 to 200 Seconds?" = refers >to A2 and it's related parts in the lower middle. On the "Block Diagram of Hardware Store Broadband Seismometer...", = what are the component values of the all the resistors and capacitors on = A1? A2 says it is a "3 amp High CMRR X1 Gain." What is the exact = configuration of A2? Greg -------------------------------------------------------------------------= ----- Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square
I interpreted the notes to mean that = the three=20 lower resistors in front of A1 were 100K, the input cap was 0.25uF, the = feedback=20 resistor was 464K, and the feedback cap was 0.01uF.
 
In my implementation, I used an = ordinary single=20 op-amp for A2, as drawn.  It works fine, as long as you choose one = (like=20 the LM837 I used) with a wide input voltage range. 
 
If you decide to go the instrumentation = amp route,=20 I suggest you buy a packaged one, like the AD620, rather than build = one. =20 To get good CMRR, you need to have matched resistors all around the = three=20 op-amps. 
Here's a link to an application note = from National=20 Semi:  http://www.national.com/m= s/LB/LB-1.pdf
 
Keith
----- Original Message -----
From:=20 Mike = Speed=20
Sent: Wednesday, December 24, = 2003 9:17=20 AM
Subject: Re: STM-8 = Questions


 
 
>"Integrator, Unity Gain Instrumentation Amp 20 to 200 = Seconds?"=20 refers >to A2 and it's related parts in the lower middle.
 
 
On the "Block Diagram of Hardware Store Broadband = Seismometer...",=20 what are the component values of the all the resistors and = capacitors on=20 A1?
 
A2 says it is a "3 amp High CMRR X1 Gain."  What is the = exact=20 configuration of A2?
 
Greg

Do you Yahoo!?
Yahoo! Photos - Get=20 your photo on the big screen in Times = Square Subject: ebay auction item From: BOB BARNS royb1@........... Date: Wed, 31 Dec 2003 10:41:16 -0500 Hi gang, Kinemetrics Analog Accelerograph Seismograph Item number: 2585159177 auction ends 1/6/04 Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L)