Barchan Dune Definition

bär-kän
noun
A crescent-shaped dune, reaching heights of up to 30 meters (98 feet) and widths of 350 meters (1,148 feet), and having a steep, concave leeward side with crescent tips pointing downwind.
American Heritage
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other
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).
American Heritage Science
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Origin of Barchan Dune

  • Russian barkhan barchan dune from Kazakh barxan Uighur bargan dune that moves

    From American Heritage Dictionary of the English Language, 5th Edition

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barchan dune