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Akhasha · 02-20-2003, 12:42 AM

In brief: snow forms in these craters in the winter months, then later melts - from the rim of the crater down - and the water flows under the still frozen snow further down the slope, which protects it from evaporation in the tenuous atmosphere. If it were a subterranian (subarean?) water source, its unlikely to occur so close to the raised crater rims. This explanation is the most consistet yet.
http://science.nasa.gov/headlines/y2...htm?list922696

02-20-2003, 12:42 AM	#21
Akhasha Resident-in-Training Join Date: Sep 2002 Posts: 7	The most likely explanation In brief: snow forms in these craters in the winter months, then later melts - from the rim of the crater down - and the water flows under the still frozen snow further down the slope, which protects it from evaporation in the tenuous atmosphere. If it were a subterranian (subarean?) water source, its unlikely to occur so close to the raised crater rims. This explanation is the most consistet yet. http://science.nasa.gov/headlines/y2...htm?list922696