PSN-L Email List Message
Subject: Ambient ground noise and solar flares?
From: Thomas Dick dickthomas01@.............
Date: Tue, 12 Jul 2011 13:03:45 -0500
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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