PSN-L Email List Message
Subject: Re: Seismometer Siting
From: "Geoffrey" gmvoeth@...........
Date: Mon, 28 Sep 2009 07:37:57 -0700
It seems silly to me that you can differentiate between
various types of disturbances in any way except through
frequencies. Even P waves can present themselves
with motion or deformation in almost any direction.
We live at a phase boundary between air and earth
where waves will meet a melodramatic velocity change.
Where P can become S and vice versa.
----- Original Message -----
To: "PSN Network List"
Sent: Sunday, September 27, 2009 11:14 AM
Subject: Seismometer Siting
> Over and over, I have read that normally a seismometer is sited for N-S,
> E-W, and Vertical sensing.
> However, I just read a paragraph in An Introduction to Seismology,
> Earthquakes and Earth Structure about a seismometer in Hawaii that "was
> oriented to receive S phase signals." How is that accomplished?
> I could venture a guess, but probably would be wrong.
> Jerry Payton
Public Seismic Network Mailing List (PSN-L)
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