Jon, My station ID is ATx and I have a lot of geophone data on Larry's
system under ATE, ATN and ATX that is from three HS-10 geophones with a gain
of 2,100. As a rule, I don't look for event data if the event is less than a
3.0 and more than 200 km away, 4.0 and more than 300 km, 5.0 and more than
400 km. Smaller local events less than 2.0 can be lost in the local noise
because I live near the Monterey Bay in Central California.
Regards, Steve Hammond PSN San Jose, Aptos, California

-----Original Message-----
From: psn-l-request@..............
[mailto:psn-l-request@................. Behalf Of Jón Frímann
Sent: Saturday, January 07, 2006 4:38 AM
To: PSN-Postlist
Subject: Range of 4,5Hz geophone


Hi all

What is the estimated range of 4,5Hz Geophone to detect earthquakes,
three axis ? Then i am counting in kilometers.

Regards.
--
Jón Frímann Jónsson
http://www.jonfr.com

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