PSN-L Email List Message

Subject: Channel strangeness
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr500@.........
Date: Fri, 27 Oct 2006 15:07:42 +0000

Hi all

I have noticed that the channels on the geophone downt show the same
level of noise as I am execting. For instance, now is the North-south
channel showing normal noise leve, also the vertical channel, but the
east-west channel is relative quiet. Just before that the north-south
channel was the quieter one.

Far as I can tell, the cable is fine and properly connected. I did check
the connection to the geophone (I use rc connection type of connect to
the geophone, prior to that there is ~1m long cable from the geophone,
that is also in good condision.) and it appears to be fine.

Before I started to seal the seismomter vault better, all channels where
showing simular level of noise. But now the east-west channel is
completly flat.

What might be the issue ?

Jón Frímann


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