PSN-L Email List Message
Subject: Surface waves from Sumatra M 9.0, 2nd Version
From: John or Jan Lahr JohnJan@........
Date: Thu, 06 Jan 2005 12:10:20 -0700
If you haven't taken a look at the IRIS "Image of the Week" yet,
check out this page (with the now correct URL!):
The image shows seismic records from stations distributed around
the globe and surface waves that traveled twice around!
Questions to think about -- Why does the y-axis stop at 180 degrees?
Why would the amplitude of the surface waves fall off around 90 degrees
and then increase at 180 degrees again?
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