PSN-L Email List Message

Subject: Fw: Infrasonic sound
From: "Larry Cochrane" cochrane@..............
Date: Mon, 18 Nov 2002 17:03:39 -0800

----- Original Message -----
From: "Lewis,Bob" 
Sent: Monday, November 18, 2002 5:03 AM
Subject: Infrasonic sound

> Larry:  Please post this for me....
> Bob Lewis
> Plano, Texas
> This morning, a little after midnight Dallas time, I heard (or rather
> what seemed like
> an 8-10 Hz. sine wave.  It lasted about 40 seconds, long enough for me to
> out into
> the back yard and try to figure out where it was coming from.  It was not
> sharp or
> staccato, sounded like a clean sine wave.  My seismometer, of course was
> at the
> time, but this seemed airborne rather than through the earth.  I could not
> determine any
> direction; seemed to be coming from all around.  Does any one have any
> as to
> what this may have been ??


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