Dune formation on the present Mars.

Clicks: 337
ID: 63532
2007
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Abstract
We apply a model for sand dunes to calculate formation of dunes on Mars under the present Martian atmospheric conditions. We find that different dune shapes as those imaged by Mars Global Surveyor could have been formed by the action of sand-moving winds occurring on today's Mars. Our calculations show, however, that Martian dunes could be only formed due to the higher efficiency of Martian winds in carrying grains into saltation. The model equations are solved to study saltation transport under different atmospheric conditions valid for Mars. We obtain an estimate for the wind speed and migration velocity of barchan dunes at different places on Mars. From comparison with the shape of bimodal sand dunes, we find an estimate for the time scale of the changes in Martian wind regimes.
Reference Key
parteli2007dunephysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Parteli, Eric J R;Herrmann, Hans J;
Journal physical review e, statistical, nonlinear, and soft matter physics
Year 2007
DOI
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Keywords
conservation gene flow coalescent radseq species delimitation species trees

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