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Mars Reconnaissance Orbiter - Late Springtime Defrosting of Northern Dunes

Posted on Saturday, April 21, 2012
Uploaded by Waspie_Dwarf
Mars Reconnaissance Orbiter - Late Springtime Defrosting of Northern Dunes
Image credit: NASA/JPL/University of Arizona

Uploader comment: This observation shows dunes in the Martian north polar sand sea (commonly referred to as the "north polar erg") in the process of defrosting. Every winter, dunes and other surfaces at these northern latitudes are coated with several tens of centimeters of carbon dioxide frost and ice, plus a minor amount of water frost.


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