PSN-L Email List Message

Subject: exact frequencies for arrival of different seismic waves ??
From: "Geoff" gmvoeth@...........
Date: Thu, 26 Jan 2006 20:29:31 -0700


Hello;

Can anyone tell me ?

Are there exact frequencies for the first
arrival time of P and S waves ?

I have only seen ranges of frequencies.

If I could pin down exact frequencies I could
make a summation of maybe three narrow band pass
filters with a relatively high Q to look for
each of these waves.

I suspect the ground may behave in a
predictable fashion with the leading edge
of a wave train.

Has anyone ever researched this in any depth
with test equipment that can show reality ?
I know for a fact that the government has
incredible test equipment because I have seen
some of it but not that which is designed
for geological work.

I have seen charts showing ranges of freqs
but here I am only interested in exact
frequencies or slew rates of the first
time of arrival and not the train that follows.

also;
If you are looking for seismic waves
created by nuclear explosions, what
would you be looking for ?

gmv
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