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Water at the poles and in permafrost regions of Mars

Philip R. Christensen
Water at the poles and in permafrost regions of Mars
Elements (June 2006) 2 (3): 151-155


The poles and mid-latitudes of Mars contain abundant water in ice caps, thick sequences of ice-rich layers, and mantles of snow. The volume of the known reservoir is > or =5X10 (super 6) km (super 3) , corresponding to a layer approximately 35 m thick over the planet. Hydrogen in subsurface H (sub 2) O ice has been detected at latitudes poleward of 50 degrees . Morphological features show downslope flow of ice-rich sediment, and recent gullies have been produced from subsurface aquifers or melting snowpacks. Variations in Mars' orbit on timescales of 50,000 to 2,000,000 years produce significant changes in climate, which result in the transport of water from the poles, where it currently resides, to the lower latitudes, where it may play a critical role in surface geology, mineralogy, and geochemistry.

ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 2
Serial Issue: 3
Title: Water at the poles and in permafrost regions of Mars
Affiliation: Arizona State University, Department of Geological Sciences, Tempe, AZ, United States
Pages: 151-155
Published: 200606
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 35
Accession Number: 2006-075377
Categories: Extraterrestrial geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200621
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