Polar margin dunes and winds on Mars

Details Polar margin dunes and winds on Mars Polar margin dunes and winds on Mars

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.5397t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), Vol. 100, no. E3, p. 5397-5406

Physics

11

Dunes, Mars Surface, Polar Regions, Wind Effects, Image Analysis, Mars Photographs, Wind Direction, Wind Profiles, Wind Velocity

Scientific paper

The approximately concentric arrangement of layered deposits and dune fields at the two Martian poles may reflect a nearly steady state dispersal of material from the polar deposits. Data on effective surface winds from high resolution Viking Images combined with theory of local winds suggest that the northern dunes are in part confined to a latitude band by winds generated by their own low albedo. Dispersal of the dark sand from the southern polar region is not subject to this kind of feedback because the irregular topography prevents areal accumulations sufficiently extensive to produce winds.

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