The ice sheet that covered North America in the last ice age pushed the
continent down relative to sea level 400 feet!
Leo
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The way we know how much ice ever covered the continent is by doing soil
testing. The soil "remembers" how much weight was ever over top of it. By
conducting a test which subjects soil to increased soil pressure there
becomes a point at which the soil compression-pressure curve breaks to a n
I'm sorry to bring up a discussion that I heard this site already finished
discussing (I tried going to the archives for this site, but they are
unavailable), but I'm real bothered that I'm unable to sort out fact from
fiction from that Fox program about not really going to the moon. Would on
"Agreed. Alaska is too far for most of you. If/when this project is
complete, however, we're going to have to test it. Unless someone can come
up with a reasonable alternative to the Harding Ice Field, that's going to
have to remain the target test site. Any alternative has to be: 1)
rea
In geotechnical engineering we use what is called a piezocone:
http://www.tecnotest.it/Products/Soil%20Penetrometers/piezocone_description.htm
This device may or may not be helpful in working out some potential design
issues. Is real time data as the probe explores beneath the ice absolutely
There are 25 glaciers on Rainier. Carbon, the thickest glacier on Rainier is
700', Nisqually is 400' thick. Carbon is much longer hike and would require
some technical climbing. Nisqually is flat, close and easy. What is the
minimum thickness for testing?
Leonardo DiFrancesco, M.S., P.E.
[E
Also, are there plans to retrieve the device, either the model or the actual
one to Europa? The entire ice sheets moves at an average
of inches to a foot per year. Some places moving much faster or slower.
The surface can move much fasteron Rainier though, I
was hit by a TV-sized ice chuc
The penetrometer with piezocone is a device pushed into the soil to collect
data:
http://www.tecnotest.it/Products/Soil%20Penetrometers/piezocone_description.htm
This device may or may not be helpful in working out some potential design
issues. Is real time data as the probe explores beneat
Consideration of the amount of heat required to melt the ice question:
In the calculation of the amount of heat required was it considered that as
the probe descends from the surface the stress increases in a linear fashion
= density of ice X depth. Thus, as the ice melts and the bonds break, t
Heat Transfer Question:
If I understand JHB correctly, he assumes that the the melted water will be
in hydrostatic equilibrium with the surrounding ice.
This is true if:
1) the melt water and ice density are equal
2) there is no way for the water to continually squeeze through the pore
spaces an
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