In the neighborhood of 0.2 Hz I get
microseismic signals seemingly
related to weather or storms in the pacific coast
or gulf of california or major weather fronts
arriving from the west.
This has been true no matter what I do.

geoff

-----Original Message----- 
From: Thomas Dick 
Sent: Tuesday, July 12, 2011 6:03 PM 
To: psnlist@.............. 
Subject: Ambient ground noise and solar flares? 

I have not been satisfied with my seismic units; an AS-1 and two 
homemade Laymans,  running Larry's software and electronics. The last 
two months the FFT shows strong peaks at ~.2 hz and .04hz. These peaks 
are unusually strong this year ...vertical scale log over 50 and 
reaching 120. This is based on taking FFT's at about 3 AM local time 
provided there is no regional or teleseimic earthquake data coming in. 
Is there any literature on this ambient noise being associated with 
sunspot activity? I noticed a flare was recorded yesterday and about the 
same time last month. It even affected my cell phone range. The oceans 
and surface storms that I normally attribute to these peaks have been 
relatively mild the last week here in middle U.S. Any comments?
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