PSN-L Email List Message

Subject: Re: Difference between a tectonic earthquake and a volcano
From: John or Jan Lahr JohnJan@........
Date: Tue, 20 Jun 2006 17:54:20 -0700

Hi Jon,

I've posted a copy of a paper on Redoubt, volcano in Alaska:
classification, location, and error analysis in a=20
volcanic environment: implications for the=20
magmatic system of the 1989-1990 eruptions at Redoubt Volcano, Alaska

This includes some images of both long-period and=20
tectonic events that could be helpful given your=20
location near some active volcanoes.


At 05:29 PM 6/15/2006, you wrote:
>Hi all
>What is the main diffrance between a tectonic type of earthquake and a
>volcano type of earthquake. Earlyer this evening i did recorod a
>earthquake that had his main energy around 5Hz at least. It didn't show
>well on higer hz, but was recorded farly good at my station at lower
>J=F3n Fr=EDmann
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