PSN-L Email List Message

Subject: RE: False Earthquake Signatures
From: "Gary Lindgren" gel@.................
Date: Wed, 6 Aug 2008 16:15:11 -0700


Thank you Larry, that solves a mystery. I'm about 3/4 mile from the SP
rails. I saw 2 like that signature about 4 hours apart. Still learning.
Gary

-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of Larry Cochrane
Sent: Wednesday, August 06, 2008 2:33 PM
To: psn-l@..............
Subject: Re: False Earthquake Signatures

Gary, this looks like a freight train going by. If you do an FFT on the data
you will 
see that the frequency range is rather narrow. An earthquake generates waves
in a 
broader spectrum.

Regards,
Larry Cochrane
Redwood City, PSN

Gary Lindgren wrote:
> Sometimes I try locate an earthquake that I see on my sensor and can't
find
> anything on the networks. From the way it looks, I would say it was an
> earthquake. What is happening. Would these be extremely small tremors
close
> by that are not registered by the networks. See this one I detected today.
> http://gelindgren.googlepages.com/080806.073329.ch1.psn.gif 
> 
> Gary
> 
>  
> 
>  
> 
>  
> 
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> Gary Lindgren
> 
> 585 Lincoln Ave
> 
> Palo Alto CA 94301
> 
>  
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> 650-326-0655
> 
>  
> 
>   www.blue-eagle-technologies.com
> 
>   cymonsplace.blogspot.com 
> 
>  
> 
>  
> 
> 
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