Good morning Joe:

I am just getting started with my equipment and do not have any =
experience.  I am afraid that I can not be of much help.

I am using parts that I purchased from Larry Cockrine and hope to get my =
station up and running in the next 6 months.

Peter

  ----- Original Message -----=20
  From: Armstrong=20
  To: psn-l@.................
  Sent: Saturday, October 07, 2006 10:03 PM
  Subject: Seismometer for Central Illinois


  I live in a subdivision in a city in Central Illinois. The geological =
survey tells my that in my area, that bedrock is 10-30' feet below. I =
have a basement, but also two active kids. I am interested in having a =
seismometer that would be capable of detecting New Madrid activity.

  So far my attempts have involved the construction of a 8" coil using =
#34 wire on a 3' - 3" pvc form using a pendulum of 6 magnetron magents. =
Coil: Resistance of ~7.1kohm. =20
  After I also have 3 - 4.5hz geophones.

  My questions follow:
  1) Can you think of a project that I use the on-hand coil and magnets =
or the geophones? Or should I just start over with another project?
  2) Basement: Is it a suitable location? I have been told that that =
gravel under the basement disperses most of the vibration. Would the =
activity of the kids affect the readings? Should the seimometer be =
physically secured to the concrete?
  3) Can a home brew seismometer  be effective in Central Illinois?

  Thanks for taking the time







Good morning Joe:
 
I am just getting started with my =
equipment and do=20
not have any experience.  I am afraid that I can not be of much=20
help.
 
I am using parts that I purchased from =
Larry=20
Cockrine and hope to get my station up and running in the next 6=20
months.
 
Peter
 

  
----- Original Message ----- 
  From:=20
  Armstrong 
  
To: psn-l@.............. 
  
Sent: Saturday, October 07, =
2006 10:03=20
  PM
  
Subject: Seismometer for =
Central=20
  Illinois
  


  
I live in a subdivision in a city in =
Central=20
  Illinois. The geological survey tells my that in my area, that bedrock =
is=20
  10-30' feet below. I have a basement, but also two active kids. I am=20
  interested in having a seismometer that would be capable of detecting =
New=20
  Madrid activity.
  
 
  
So far my attempts have involved the =
construction=20
  of a 8" coil using #34 wire on a 3' - 3" pvc form using a pendulum of =
6=20
  magnetron magents. Coil: Resistance of ~7.1kohm.  =

  
After I also have 3 - 4.5hz=20
  geophones.
  
 
  
My questions follow:
  
1) Can you think of a project that I =
use the=20
  on-hand coil and magnets or the geophones? Or should I just start over =
with=20
  another project?
  
2) Basement: Is it a suitable =
location? I=20
  have been told that that gravel under the basement disperses most =

  of the vibration. Would the activity of the kids affect the=20
  readings? Should the seimometer be physically secured to the=20
  concrete?
  
3) Can a home brew seismometer =
 be effective=20
  in Central Illinois?
  
 
  
Thanks for taking the =
time
  
Joe