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Mars Global Surveyor
Mars Orbiter Camera

Terra Sirenum Gullies

MGS MOC Release No. MOC2-1416, 29 March 2006

Medium-sized view of MGS MOC Picture of the Day, updated daily
NASA/JPL/Malin Space Science Systems

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a portion of the northern wall complex of a crater in northwest Terra Sirenum. Several spectacular gully networks extend from a variety of elevations on the wall and run downslope toward the crater floor (bottom of image). The genesis of these features is still hotly debated in the Mars science community. Among the possibilities is that of a combination of mass movement and groundwater seepage and runoff.
Location near: 39.2°S, 164.2°W
Image width: ~3 km (~1.9 mi)
Illumination from: upper left
Season: Southern Summer

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Malin Space Science Systems and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission. MSSS operates the camera from its facilities in San Diego, California. The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, California and Denver, Colorado.

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