Jim,

I can help you with my address at least:

    Larry Conklin
    105 Riverglen Rd.
    Liverpool, NY 13090

    lconklin@............

Larry

  ----- Original Message -----=20
  From: Connie and Jim Lehman=20
  To: psn-l@.................
  Sent: Saturday, December 21, 2002 7:33 AM
  Subject: Short Period Vertical/ Geophones??


  C. Patton, A. Hrubetz, & J. Lahr--your copies of the short period =
design are in the mail. =20
     I need some help on mailing addresses for S. Hammond, L. Conklin & =
F. Cooper---
      Thanks Chris for your comments on geophones.  I remember showing =
the short period vertical design to a geophysicist who had considerable =
experience in exploration using geophones.  He said--"Why not use a =
geophone?"  We got hold of several used discards in good condition and =
tried them.  They  are "strong motion" in nature, but with todays =
amplification one can adapt.  The units we had were periods less than a =
1 second, and were underdamped for our purposes.  We wanted parameters =
to match the 1 second vertical Springnether (sp) professional sensor the =
Geology Dept. was using at that time--for comparison purposes.  We never =
pursued the idea further--but felt it had possibilities.
       No doubt there are persons out there like Chris that have had =
some experience with geophones.  They are compact--a neat package and =
reasonably economical--a quick way to go vertical-- if you can adapt the =
parameters to be within the wishes of an amateur seismologist.
                                                                  =
Season's Best---Jim Lehman

                                                                         =
       =20







Jim,
 
I can help you with my address at =
least:
 
    Larry Conklin
    105 Riverglen Rd.
    Liverpool, NY 13090
 
    lconklin@............
 
Larry
 

  
----- Original Message ----- 
  From:=20
  Connie and=20
  Jim Lehman 
  
To: psn-l@.............. 
  
Sent: Saturday, December 21, =
2002 7:33=20
  AM
  
Subject: Short Period Vertical/ =

  Geophones??
  


  
C. Patton, A. =
Hrubetz, & J.=20
  Lahr--your copies of the short period design are in the mail. =20
  
  
   I need =
some help=20
  on mailing addresses for S. Hammond, L. Conklin & F.=20
Cooper---
  
    =
Thanks Chris=20
  for your comments on geophones.  I remember showing the short =
period=20
  vertical design to a geophysicist who had considerable experience in=20
  exploration using geophones.  He said--"Why not use a =
geophone?"  We=20
  got hold of several used discards in good condition and tried =
them. =20
  They  are "strong motion" in nature, but with todays =
amplification one=20
  can adapt.  The units we had were periods less than a 1 second, =
and were=20
  underdamped for our purposes.  We wanted parameters to match the =
1 second=20
  vertical Springnether (sp) professional sensor the Geology Dept. was =
using at=20
  that time--for comparison purposes.  We never pursued the idea=20
  further--but felt it had possibilities.
  
     No=20
  doubt there are persons out there like Chris that have had some =
experience=20
  with geophones.  They are compact--a neat package and reasonably=20
  economical--a quick way to go vertical-- if you can adapt the =
parameters to be=20
  within the wishes of an amateur seismologist.
  
          &nbs=
p;            =
;            =
            &=
nbsp;           &n=
bsp;   =20
  Season's Best---Jim Lehman
  
 
  
          &nbs=
p;            =
;            =
            &=
nbsp;           &n=
bsp;           &nb=
sp;      =20