PSN-L Email List Message
Subject: Clarification on last request about seismometer orientation
From: "GPayton" gpayton@.............
Date: Sun, 27 Sep 2009 14:43:31 -0500
Everyone might not have the book that I quoted from; so, I will quote from
it"
Figure 1.1-4 shows a seismogram from an earthquake at a depth of 650 km
in the Tonga subduction zone recorded in Hawaii. "The seismometer is
oriented such that all the arrivals are shear waves." In addition ....
The figure display shows only S, ScS,sS and repeated shear wave bounces.
Since is specifically points out the orientation of the receiver, it caught
my attention. Maybe, the software filters out P-wave arrivals, I don't
know. The statement was an anomaly to my virgin ears!
Regards to all,
Jerry
Everyone might not have the book that I quoted from; so, I will =
quote from=20
it"
Figure 1.1-4 shows a seismogram from an =
earthquake at a=20
depth of 650 km in the Tonga subduction zone recorded in=20
Hawaii. "The seismometer is oriented such that all the =
arrivals=20
are shear waves." In addition ....
The figure display shows only S, ScS,sS and repeated shear wave=20
bounces. Since is specifically points out the orientation of the =
receiver,=20
it caught my attention. Maybe, the software filters out P-wave =
arrivals, I=20
don't know. The statement was an anomaly to my virgin ears!
Regards to all,
Jerry
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