PSN-L Email List Message

Subject: predictions and arrivals
From: "John Tacinelli" John.Tacinelli@........
Date: Tue, 12 Sep 2000 16:40:29 -0500

Hi all,

With all due respect I don't see how sunlight can affect earthquakes.  As =
far as predicting earthquakes goes, there is no method that I know of that =
is effective over the short term.  Perhaps you could explain how this =
method works.

On another subject, I have gotten several very strange arrivals lately.  =
The other night, I got three arrivals each about the same size at around =
2am.  They were a few minutes apart.  They start as a fairly large arrival =
then decrease monotonically over about 1 minute.  It looks like something =
jostled the instrument but when that actually happens the response is very =
different.  Also, every time this happens, the waves are the same size.  =
They don't seem to be related to any earthquake.  I have occasionally =
gotten them during the day as well.  I am thinking it might be an =
explosion somewhere, such as a quarry.  Has anyone ever recorded anything =
like that?

John Tacinelli
Earth Science Instructor
Rochester Community and Technical College


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