Mathematics – Logic
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.8183b&link_type=abstract
Journal of Geophysical Research, vol. 84, Dec. 30, 1979, p. 8183-8204. Research supported by the U.S. Geological Survey, Smiths
Mathematics
Logic
40
Dunes, Dust Storms, Earth Surface, Geomorphology, Mars Surface, Sands, Shapes, Structural Properties (Geology)
Scientific paper
A comparative study of Martian and terrestrial dunes was made based on Viking Orbiter pictures and aerial pictures of terrestrial deserts. The morphological similarity between the Martian dunes and terrestrial crescentic dunes implies that the dynamics of dune formation are similar on the two planets, despite Martian constraints on dune formation that include much higher velocity winds required to move 'sand' in saltation, the possible inhibition of sand movement by absorbed water vapor, the seasonal 'snow' cover in the north circumpolar erg, and a probably sparse sand supply. The absence of longitudinal dunes and the restriction of massive crescentic dunes to a few sites on Mars suggests that Mars may have a long eolian history in which much of the sand suitable for saltation has already been transported to the north polar erg and crater floor fields.
Breed Carol S.
Grolier Maurice J.
McCauley John F.
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