PIA04587: Defrosting Gully Aprons
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Mars Global Surveyor (MGS)
Spacecraft: Mars Global Surveyor Orbiter
Instrument: Mars Orbiter Camera (MOC)
Product Size: 540 x 810 pixels (width x height)
Produced By: Malin Space Science Systems
Full-Res TIFF: PIA04587.tif (438.1 kB)
Full-Res JPEG: PIA04587.jpg (71.13 kB)

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Original Caption Released with Image:
MGS MOC Release No. MOC2-398, 21 June 2003

This is a late winter Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture of frost-covered gullies in a crater in the martian southern hemisphere. The dark spots are areas where the frost has begun to change or sublime away. The gullies are formed by a combination of mass movement (landsliding) and possibly fluid flow through the channels--whether the fluid was liquid water or some other material is unknown. Today, the surfaces are dry and subjected to the seasonal coming-and-going of carbon dioxide frost. The image is located near 71.0S, 95.5W. Sunlight illuminates the scene from the upper left.

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2003-06-23