PIA06846: Wind Streak Changes
 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:  838 x 1843 pixels (w x h)
 Produced By:  Malin Space Science Systems
 Producer ID:  MOC2-837
 Full-Res TIFF:  PIA06846.tif (1.467 MB)
 Full-Res JPEG:  PIA06846.jpg (235.7 kB)

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Original Caption Released with Image:

2 September 2004
This pair of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) images shows changes in dark wind streak patterns that occurred between 5 April 1999 (image M00-00534) and 17 August 2004 (image R20-00901). Unlike the spaghetti-like streak patterns made by dust devils, these streaks all begin on their upwind ends as tapered forms that fan outward in the downwind direction, and they all indicate winds that blew from the same direction. In both cases, winds blew from the southeast (lower right) toward the northwest (upper left). These streaks and the small pedestal craters found among them occur in the Memnonia region of Mars near 5.9S, 162.2W. The 400 meter scale bar is about 437 yards long. Sunlight illuminates each scene from the upper left.

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2004-09-02