While testing a 4.5 Hz geophone system near
Washington, DC on January 12,  I seem
to have picked up a good signal from a
quake near Bermuda (about 800 miles away)
http://wwwneic.cr.usgs.gov/neis/bulletin/020112082652.html

Here is the WinQuake data file and plot 
http://www.infiltec.com/seismo/020112a.gif
http://www.infiltec.com/seismo/020112a.set

Note that my time base was fast by about 290 seconds.

Here is a WinQuake map that incorporates
my data and PSN data from sites in NJ and
Alabama.
http://www.infiltec.com/seismo/020112_map.gif

A couple of questions:

1. Is it unusual for a signal from a quake 800 miles
away to have so much high frequency energy?

2. Am I setting up the S and P markers correctly?
My quake location seems a lot further off than
the PSN data sets from NY and AL.  I am a
WinQuake novice.

I have put up a new web page on my simplified
electronics board for a short period system:
http://www.infiltec.com/seismo/inf-qm45.htm

....Dave Saum

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