[meteorite-list] Ground penetrating radar at Carancas?

[Michael Farmer]

Piper, this is a dream, finding a toilet that flushed
in Desaguadero was hard enough, phone calls took 10
tries to complete, do you really think a Groun
Penetratin Radar can be found nearby? It doesnt matter
at this point, the government would put you in jail as
they prefer to let the meteorite rot. 
Michael Farmer




--- "Piper R.W. Hollier" <piper at xs4all.nl> wrote:

> Hello again list,
> 
> Ground penetrating radar (GPR) is commonly used for
> non-destructive 
> investigation of archaeological sites. GPR "can
> detect objects, changes in 
> material, and voids and cracks." (Wikipedia) Has
> anyone thought of mapping 
> the crater with GPR before sending in a backhoe to
> rip it open? This could 
> be one way to have some idea whether there are
> meteorite masses under the 
> ground, how large, and where, before starting to
> dig. It could also yield 
> valuable information about the morphology of the
> crater, with potentially 
> more precision and detail than digging would allow.
> 
> Can someone on the list comment on the state of the
> art of GPR? How deep 
> can it penetrate nowadays? (Wikipedia says 15
> meters, best case.) Would a 
> high water table be a problem? (Wikipedia says that
> range would be greatly 
> reduced in "moist and/or clay laden soils.") Are
> there new designs or 
> techniques that could get around such limitations?
> 
> In any case, there would be some thorny practical
> problems to be dealt 
> with. Ordinarily the antennas need to be nearly in
> direct contact with the 
> ground, which would seemingly make it very
> difficult, if not impossible, to 
> do a scan of an area where the ground surface is
> anything but flat. Or has 
> someone come up with a "workaround" for this issue
> in a similar situation?
> 
> Best wishes to all,
> 
> Piper
> 
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