PSN-L Email List Message

Subject: Re: My seismometer vault solution
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr500@.........
Date: Sun, 29 Oct 2006 19:20:06 +0000

Hi all

Yesterday it was raining a quite lot. But everything looks fine at this
moment. I don't see anything pointing to that the bucket is leaking. The
ground titls a little bit down where the geophone is, so the flow of the
water is down. The real test comes when the snow arrives and leaves.
Noise levels are good, better then I did expect, but I haven't seen
everything yet. So I don't know how this looks in the long term.
Sensitivite appears to be good, if I can use the local noise a guide.
There hasn't been a earthquake that I can use to check, yet anyway. It
has started to freeze agen, so I might see frostearthquakes soon, small
spikes that happen when the ground freezes, the geologist at Icelandic
Met office told me about them, I am going to look out for them when
freezing happens.

I didn't seal the geophone where the cable comes out, if water gets in I
don't think that anything is going to stop it anyway from reaching the
internals of the geophone. I also expect to see it farly quickly if that

Jón Frímann


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