Other
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.4621t&link_type=abstract
Journal of Geophysical Research, vol. 84, Aug. 10, 1979, p.4621-4633.
Other
4
Annual Variations, Frost, Mars Surface, Polar Caps, Spaceborne Photography, Craters, Mariner 9 Space Probe, Mosaics, Viking Orbiter Spacecraft, Wind Direction, Wind Effects
Scientific paper
Viking Orbiter images of the annual south polar cap on Mars exhibit elongated bright features that are associated with craters and resemble wind streaks observed elsewhere on Mars. The study focuses on the well-documented frost streaks. The discussion covers the morphology of frost streaks, occurrence, seasonal behavior, thickness of frost in streak deposits, wind patterns inferred from frost streaks and other eolian features in the south polar region, formation of frost streaks, and other locales of preferential frost accumulation. The form and seasonal behavior of the bright elongated albedo markings which extend from the rims of many craters in the south polar cap suggest that they are accumulations of CO2 frost in the lee of craters. The frost streaks appear in the fall, increasing in length but not changing in direction during fall and winter. The frost streaks indicate a prograde circulation pattern of near-surface winds around the pole. Other details are also presented.
Campos-Marquetti R.
Thomas Patrick
Veverka Joe
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