PIA05991: Lycus Sulci Slope Streaks
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: 672 x 1008 pixels (width x height)
Produced By: Malin Space Science Systems
Producer ID: MOC2-733
Full-Res TIFF: PIA05991.tif (678.3 kB)
Full-Res JPEG: PIA05991.jpg (103 kB)

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Original Caption Released with Image:

21 May 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows dark slope streaks coming off of rugged hills in the Lycus Sulci region, north of the Olympus Mons volcano. These slopes are mantled with fine, bright dust. From time to time, the dust will avalanche down a slope, forming a slope streak. The behavior of this dry, granular material can be somewhat fluid-like. New slope streaks can form at any time and, for an area the size of that shown here, may form at a rate of one per Mars year (687 Earth days). Naturally, some scientists have suggested that water plays a role in forming these streaks, but, in general, Mars is drier than the driest deserts on Earth and these streaks are contemporary features that occur in the dustiest regions of the planet. The image is located near 29.8N, 133.4W, and covers an area about 3 km (1.9 mi) across. The picture is illuminated by sunlight from the lower left.

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2004-05-21