Re: Depth finder for ground imaging
- From: kensmith@xxxxxxxxxxxxxxx (Ken Smith)
- Date: Tue, 16 May 2006 03:43:09 +0000 (UTC)
In article <1147714941.356129.195600@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
<cs_posting@xxxxxxxxxxx> wrote:
Ken Smith wrote:
soil is a pretty poor medium for conducting sound at any frequency.
Anyone who lives in earthquake country knows this isn't true. The energy
in an earthquake is sound.
Also, there is an entire seismic industry based on the fact that soil is a
good conductor of sound.
The primary conduction is probably through rock, not the soil on top of
it. Also earthquakes and even seismic sounders are pretty "loud" to
being with.
You missed the entire "refraction" market. They are looking at the near
surface stuff and the signal source is a person with a big hammer.
Seismic sounders are mostly in the oil industry. They cost way too much
for the guy bidding on making a road to afford.
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