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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