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barchan dune

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  1. A large, crescent-shaped dune lying at right angles to the prevailing wind and having a steep, concave leeward side with the crescent tips pointing downwind. Barchan dunes form on flat, hard surfaces where the sand supply is limited. They can reach heights of up to 30 m (98 ft) and widths of 350 m (1,148 ft).
  2. See illustration at dune


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Example Sentences

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Stump described the memorial’s future appearance as having two barchan dune forms that would create an oasis in the middle, and a wall color and texture that would evoke the desert where Desert Storm took place.

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