sand dune
- n a ridge of sand created by the wind; found in deserts or near lakes and oceans
sand dune :
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- Space News: Dry ice 'snowboards' on Mars
NASA research indicates hunks of frozen carbon dioxide – dry ice – may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go. “I have always dreamed of going to Mars,” said Serina Diniega, a planetary scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif., and lead author of a report published online by the journal Icarus ...
June 15, 2013 - Lake County News - Claw Marks On Mars Caused By Dry Ice Sleds
Some gullies scoring the sides of Martian sand dunes were likely carved by frozen chunks of carbon dioxide, also known as dry ice, a new study finds.
June 14, 2013 - Business Insider - Sliding dry ice may create Mars 'toboggan tracks'
By Larry O'HanlonDiscovery NewsThere is no mistaking them: the tracks of tobogganers on the frigid slopes of Mars. The Martian toboggans in this case are slabs of dry ice that are now believed to slide down sand dunes and create long, narrow channels that had previously been ascribed to some sort of weird water seeps.The new explanation for the strangely long, high-sided channels in dune faces ...
June 13, 2013 - NBC NEWS