In this work we analyze a dark erg on Mars that could be considered a mega-dune (draa) where secondary dunes of different morphology are superposed over a main crescent-shaped bedform (primary dune). The presence of a complex, multi-directional wind regime is indicated as one of the main causes for the accumulation of a tall draa, presenting an analogy to the Great Sand Dunes in Colorado.
Interpretation of the complex dune morphology on Mars: Dune activity, modelling and a terrestrial analogue
ORI, Gian Gabriele
2012-01-01
Abstract
In this work we analyze a dark erg on Mars that could be considered a mega-dune (draa) where secondary dunes of different morphology are superposed over a main crescent-shaped bedform (primary dune). The presence of a complex, multi-directional wind regime is indicated as one of the main causes for the accumulation of a tall draa, presenting an analogy to the Great Sand Dunes in Colorado.File in questo prodotto:
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