PSN-L Email List Message
From: Dennis Wieck dwieck@............
Date: Fri, 12 Aug 2005 11:56:44 -0700
I am in the process of setting up a station. I have a set of Larry's geophones
and his amplifier/ filter boards along with his A/D board. I am trying to decide
the best place to place my sensors. I live in northwest TN almost on top of the
New Madrid Fault. I want to set the geophones up first then I may experiment
with some other sensors ( I am also collecting parts to build a S-G sensor ). I
have a couple of choices from the reading I have done. I have several questions
about trying to decide which would be the "best" place to mount them.
I have seen references to mounting them in the crawl space of houses. This would
probably be one of the easier options. I can get under he house easily and would
have short cable runs. I am not sure how much of the house noise would be picked
up in this type location. It is just a dirt base under he house right now..
The second option would to build a small vault probably dug in the ground 3 or
4 feet deep. ( Most likely I would not be able to get to bedrock). I have seen
several of this type on he web. I live pretty much in the country on about 5
acres. Most of the land is pretty hilly with a lot of trees. I have seen
references saying that you need to be relatively far from trees etc or the wind
moving them will affect the sensors. If I do this I would have further to run
the cables back to the house. Is it better to have the longer run from the
sensors to the boards or to have the A/D output have the longer runs?
How much difference would there be with these types of locations?
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