PSN-L Email List Message

Subject: A problem with Z channel ?
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr@.........
Date: Tue, 18 Jan 2011 23:00:49 +0000

Hi all,

I am wondering one thing. I was setting up a new geophone for
Hvammstangi (a replacement for the current one). One thing that I am
noticeing is that vertical (Z) appears to have less amplitude then other
channels (E-W, N-S). This might just be a chance, but I am using noise
in order to terminate if everything is working correctly at the new

I did record the Mw7.3 earthquake in Pakistan on the new geophone setup.
The trace is here. (35 min long)

Comparison (40 min long).

J=F3n Fr=EDmann J=F3nsson


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