Physics
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999misp.conf..107w&link_type=abstract
Workshop on Mars 2001: Integrated Science in Preparation for Sample Return and Human Exploration, p. 107
Physics
Dunes, Dust Storms, Mars Surface, Wind (Meteorology), Wind Effects, Wind Erosion, Mars (Planet), Terraforming, Topography, Cameras, Mars Global Surveyor, Mars Pathfinder
Scientific paper
The Mars Pathfinder (MPF) and Mars Global Surveyor (MGS) missions to Mars have given tremendous new insight into Martian eolian processes. We now recognize both bright and dark duneforms from orbit (bright dunes are ubiquitous over the Red Planet; dark dunes are prevalent in the highest northern latitudes and the middle southern latitudes). The pristine nature of Martian dunes and their rapid shedding of bright dust after storms suggest that some are currently active, at least seasonally. Ventifacts have been recognized at the Mars Pathfinder site; at least 50% of rocks near the Sagan Memorial Station show evidence of eolian abrasion, as apparently does "Big Crater" as seen in MGS Mars Orbiter Camera (MOC) images. Effective winds indicated by depositional and erosional eolian features, however, are very different: bright streaks viewed from orbit, wind tails, and duneforms at the MPF site indicate winds from the northeast; ventifacts indicate that winds came from the east.
Herkenhoff Ken E.
Ward Wesley A.
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