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Old 11-25-2003, 07:18 PM   #7
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
Quote:
Originally posted by Riddil
I've never understood the real *reason* behind arguing whether or not Mars had running water. It seems immaterial.

I believe I read somewhere that even at the poles which have frozen water (and a few frozen gases, to boot), that in the "martian summer" it will actually become warm enough for some of the ice to melt. At which point it goes directly from solid ice to a gas, since the atmospheric pressure on Mars is far too low to sustain water in a liquid form when it becomes that warm.

If that statement is true, then for there to be running water at that magnitude it would mean that Mars at that time would have had to have a much higher atmospheric pressure... something difficult to do considering the gravity of the planet can't really sustain a dense stratosphere.

(Of course, my entire argument is based on the bits I remember from HS science courses and a smattering of knowledge I gleaned from my college meteorology course... when I was actually awake. Sadly enough, considering how infrequently that was and how long ago it was, it should be noted that I'm far from an expert in the field)
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