PSN-L Email List Message

Subject: Re: HELP
From: twleiper@........
Date: Fri, 1 Dec 2000 18:15:25 -0500


On Fri, 1 Dec 2000 10:39:01 -0500 "Ted Blank"  writes:
> 
> Has anybody tried taking a concrete saw and isolating a square of 
> the floor
> in the corner of their basement?  (Best done while the wife is 
> shopping I
> imagine).  



I did that as a teenager and my father promptly curtailed my pusuit
of amateur seismology. Our basement had a raised section due to
a immovable (without blasting) rock or bedrock. I "isolated" my slab
but only got about a weeks worth of comparative data before my
Lehman (back then we called them "garden gate") instrument was
"dismantled" by being hurled at the cinder block wall. If you are one
who filters for teleseismic events, this is a waste of time. However
if parking the car tilts things, you might consider it.
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Larry Cochrane <cochrane@..............>