Living reference work entry
Modified wedge dune extended longitudinally in the resultant transport direction.
Drop dunes form in areas where sand supply is low and subject to a bimodal wind regime where the directions of the winds differ by >120° (Parteli and Herrmann 2007; Parteli et al. 2009a; Reffet et al. 2010). It originates from a wedge dune whose downwind tail elongates, leading to a longitudinal dune (Parteli et al. 2009a; Fig. 1).
KeywordsGeographical Information Study Location Divergence Angle Transport Direction Wind Regime
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- Parteli EJR, Herrmann HJ (2007) Saltation transport on Mars. Phys Rev Lett 98:198001Google Scholar
- Parteli EJR, Durán O, Tsoar H, Schwämmle V, Herrmann HJ (2009a) Dune formation under bimodal winds. Proc Natl Acad Sci U S A 106:22085–22089Google Scholar
- Parteli EJR, Almeida MP, Durán O, Andrade JS Jr, Herrmann HJ (2009b) Sand transport on Mars. Comput Phys Commun 180:609–611Google Scholar
- Reffet E, Courrech du Pont S, Hersen P, Douady S (2010) Formation and stability of transverse and longitudinal sand dunes. Geology 38:491–494Google Scholar
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