PSN-L Email List Message

Subject: ELF/ULF Precursor
From: Arie Verveer ajbv@............
Date: Fri, 21 Jul 2000 11:50:40 +0800

Hi, This may be of interest. In the event list the file "000720a.au4" shows the 
ELF/ULF background for the Mb6.0 "Honshu" quake. My stations location was placed 
at the quakes location to show the exact time of the quake. Note the background
change at the time of the quake. If this is true then a  ULF magnetic field was 
generated at the time of the quake. Remember i'm a long way from the quake.

So far the data suggests that large quakes deeper than 33 kilometres seem to
generate some sort of effect. As always more data is needed, so it would be best
to put it in the interesting basket. The Mw 6.4 (17/July/2000) Hindu Kush quake
seemed to generate a precursor event. 



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