PSN-L Email List Message
Subject: clock pendulums
From: Bryan Mumford ng1@............
Date: Fri, 11 Mar 2011 11:10:15 -0800
I have just joined your list to learn a little more about seismic
monitoring. I though you might have an interest in my "left-handed"
experience with seismic activity. I measure clock pendulums, which
can act as seismometers. The recent Japanese quake registered on two
clocks I happened to be monitoring last night.
See:
http://www.bmumford.com/mset/courthouse/earthquake/index.html
I would be happy to learn why there is a second disturbance in my
data at 10:39 PM. Was this a slower type of seismic wave, or an
aftershock?
Am I seeing the P wave, or an S wave, or what?
--
Bryan Mumford
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