PSN-L Email List Message

Subject: re more regional P phases
From: sean@...........
Date: Mon, 14 Aug 2000 11:48:21 -0500 (CDT)

Arie and John,

Re: Having Pb refer to a "basaltic" layer as Pg refers to a 
"granitic" crustal layer:

That seems to be the answer, and why most continental seismologists
have not seen it because they (we) have generally not had a "basaltic" 
layer to work with. And taking it further, a "Ps" phase for a 
sedimentary surface layer wouldn't work either, since "S" is taken for 
shear wave propagation, hence the wildcard notation "P*", which would 
(of course) also cover all surface layer geologies above the Conrad


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Larry Cochrane <cochrane@..............>