PSN-L Email List Message
Subject: Re: Photos of your station
From: Richard Schneider cfi2fly@.........
Date: Mon, 16 May 2011 15:06:07 -0700
Hi Geoff,
Thank you for the complement. I am quite new at this, building my first
vertical almost a year ago. I am learning much from reading the mail here
at PSN and other sources such as IRIS.
Regarding the free period oscillation of my AS-1 type sensor, I'm only up t=
o
1.85 seconds.
I've read somewhere if the distance from mast spring attachment point and
the booms hing point is *decreased* it would *increase* the free period.
Mine is set to about 4 inches. It's my understanding that if the distance i=
s
reduced too much, the free running boom will become unstable. I am not sure
what that means operationally. I believe the manufacturer of the AS-1
advertises only a 1.5 second run.
Burying it might be interesting, but I would have a difficult time trying t=
o
make any adjustment changes such as dampening or balancing. My biggest issu=
e
here is a constant cycle of noise that comes with local winds as well as
ocean gales just off our coast.
Richard
On Mon, May 16, 2011 at 2:04 PM, Geoffrey wrote:
> I'm no expert but that=92s one of the nicest armature verticals
> I have ever seen in that class of device.
> Can you get a 5 or 10 second free period ?
> Might this be buried without maintenance concerns ?
>
> geoff
>
> -----Original Message----- From: Richard Schneider
> Sent: Monday, May 16, 2011 8:03 PM
> To: psnlist@..............
> Subject: Re: Photos of your station
>
>
>
>
> Hi Larry,
>
>
>
> I operate a homebrew AS-1 type sensor on the IRIS network.
>
> Location: Camarillo, California
>
> Operator: Richard Schneider
>
> Station ID: KCMA
>
> Network: IRIS
>
>
>
> Near real time helicorder:
>
> http://www.iris.edu/amaseis/schools/as1imgs/KCMA.png
>
>
>
> Pictures:
> https://picasaweb.google.com/cfi2fly/AS1TypeSeismometerImproved#slideshow=
/5594006556700934034
>
>
>
> Thank you,
>
>
>
> Richard
>
>
>
>
> On Mon, May 16, 2011 at 12:39 AM, Larry Cochrane
> wrote:
> Hi Everyone,
>
> It has been brought to my attention that this page
> http://psn.quake.net/photos/photo.html has a lot of broken links. I would
> like to update this page. If you have a web site that has pictures of you=
r
> sensor and station that could be useful to new comers please send me a li=
nk
> so I can add it to the Photos web page.
>
> Thanks,
> Larry Cochrane
> Redwood City, PSN
>
>
>
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-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 (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with the body of
> the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>
Hi Geoff,
=A0
Thank you for the complement. I am=A0quite new at this, building my fi=
rst vertical almost a year ago. I am learning much from=A0reading the mail =
here at=A0PSN and other sources such as IRIS.
=A0
Regarding the free period oscillation of my AS-1 type sensor, I'm =
only up to 1.85 seconds.
I've read somewhere if the distance from mast spring=A0attachment =
point and the booms hing point is decreased it would increase<=
/em> the free period. Mine is set to about 4 inches. It's my understand=
ing that if the distance is reduced too much, the free running boom will be=
come unstable. I am not sure what that means operationally. I believe the m=
anufacturer of the AS-1 advertises=A0only a=A01.5 second run.
=A0
Burying it might be interesting, but I would have a difficult time try=
ing to make any adjustment changes such as dampening or balancing. My bigge=
st issue here is a constant cycle of noise that comes with local=A0winds as=
well as ocean gales just off our coast.
=A0
Richard
=A0
=A0
On Mon, May 16, 2011 at 2:04 PM, Geoffrey
<gmvoeth@...........<=
/a>> wrote:
I'm no expert but that=92s o=
ne of the nicest armature verticals
I have ever seen in that class of de=
vice.
Can you get a 5 or 10 second free period ?
Might this be buried without =
maintenance concerns ?
geoff
-----Original Message----- From:=
Richard Schneider
Sent: Monday, May 16, 2011 8:03 PM
To: psnlist@..............=
Subject: Re: Photos of your station=20
[ Top ]
[ Back ]
[ Home Page ]