PSN-L Email List Message

Subject: Noise and earthquakes
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr500@.........
Date: Thu, 09 Feb 2006 20:44:36 +0000


Hi all

Tomorrow (hopefully) i will send few recordings of earthquakes that i
did record today (i am still wating for the final size and location etc,
data from the Icelandic met Office), however there is a lot of noise in
those recordings. Since the earhquakes did happen during the day. There
is also a diffrent type of noise in the recordings, but it appears that
when the ground is frosen it makes hig pulse period (both short and long
period) noise that i sometimes records. One such noise did happen at the
same time as i did record a earthquake. I did try to downfilter the
files, but that didn't work well. Since the trace of the earhquakes is
weak.

I did send today the psn file list page two earthquakes that i did
record yesterday and today. I got a trace of a 2.48 mag on Reykjanes, it
was decent. Also a  recording of a mag 3.3 earthquake, but it was really
poor.

Suggestions are always welcomed. Sorry for the spelling errors.

Regards.
-- 
Jón Frímann Jónsson
http://www.jonfr.com

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