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(Article of book - 1986)

Document title

Two-dimensional analysis of dune profile and the effect of grain size on sand dune morphology in Physics of desertification.

Authors(s) and Affiliation(s)

TSOAR H. ;

Abstract

Theoretical consideration shows that the steady-state profile of a dune subjected to an unidirectional wind is flat, low and convex with the ratio of dune height to its upwind length = 0,05. Grain size is another factor governing dune profile. A coarse-grained sand dune has a greater difference in threshold velocity between the crest area and its lower level than a finer-grained sand dune of a similar profile. It will have much longer periods of erosion taking place only at or near the crest, thus lowering the dune profile

Source

Book

Editor : Martinus Nijhoff, Dordrecht - PAYS-BAS (1986)

Millesime : 1986  [s. p.]

Language

Anglais

Localisation

Maison des sciences de l'homme - Paris

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