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Subject: Passing solar flare geomagnetic shock wave?
From: meredith lamb mlamb1@..........
Date: Fri, 09 Jun 2000 12:10:18 -0700

Hi all,

A speculative time period comparison to the solar flare geomagnetic
disturbance "around" 09:30 on June 8, 2000 UTC, is on:

The SOHO satellite out in space, transmits passing fronts and
it arrives on earth "around" a hour later.

The diamagnetic horizontal seismometer here is orientated
N-S, with a natural period of .9 seconds, but with a amplifier
capacitiance period of some 30 seconds.  The possible
but speculation wave front seemed to have produced a main
sine wave of 3 minutes, but with other sequence sine waves
of more/less frequency.  No natural or otherwise vehicle
disturbance has been known to create this extended effect previously.
Passing bus's are known to create a much shorter "spike", as
on the far right of the 3 views shown.  This instrument is
unshielded and of course subject to seismic and other
magnetic influence.

Another geomagnetic front may pass on June 10th, but with a
lesser amplitude.  See Space Science News at:

Meredith Lamb


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Larry Cochrane <cochrane@..............>