Size Distribution of Barchan Dunes by a Cellular Dune Model
Barchans, which are crescent sand dunes, are observed in desert and on the surface of the Mars. They form barchan field through interaction such as collision processes. In order to investigate dynamics of barchan field, we used cellular dune model. The model includes only saltation and avalanche as the basic sand transport processes. We succeed to reproduce a few hundred of barchans in a numerical simulation. The size of barchans grows more and the number of them is less. Also the size distribution has long-time tail like log-normal distribution.
KeywordsSand dune Barchan
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