PSN-L Email List Message

Subject: Re: Seismology & Nuclear Weapons Testing
From: "Geoffrey" gmvoeth@...........
Date: Tue, 3 Mar 2009 06:46:19 -0700

Wow that is neat you can see the dilatation (ratifaction) of the shock wave
in the form of a spreading cloud since the low pressure & temperature condenses the
moisture into a cloud front. The intense pressure wave ( higher in temp )
must be invisible just ahead this spreading cloud front.

You see the same kind of things around jet fighter wings
and jet engine intakes when the relative humidity is high.

I wonder if stress and strain in the earth can reveal itself in some indirect way
since no one can see it directly.

----- Original Message ----- 
From: "Bob Hancock" 
To: "PSN" 
Sent: Monday, March 02, 2009 4:26 PM
Subject: Seismology & Nuclear Weapons Testing

> Interesting article from Scientific American on the use of seismology  
> to detect underground nuclear explosions.
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