Physics – Condensed Matter
Scientific paper
2002-01-08
Physics
Condensed Matter
submitted to Eur. Phys. J. B, 20 pages, 20 figures
Scientific paper
10.1140/epjb/e2002-00236-4
Almost fifty years of investigations of barchan dunes morphology and dynamics is reviewed, with emphasis on the physical understanding of these objects. The characteristics measured on the field (shape, size, velocity) and the physical problems they rise are presented. Then, we review the dynamical mechanisms explaining the formation and the propagation of dunes. In particular a complete and original approach of the sand transport over a flat sand bed is proposed and discussed. We conclude on open problems by outlining future research directions.
Andreotti Bruno
Claudin Philippe
Douady Stephane
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