Mots-clés
Barkhane ; California ; Domaine aride ; Dune ; Eolien ; Etats-Unis ; Exposition de versant ; Granulométrie ; Sable ; Transport éolien ; Vitesse du ventAeolian features ; Aeolian transport ; Arid area ; Barchan ; California ; Dune ; Grain size distribution ; Sand ; Slope exposure ; United States of America ; Wind speedSediment flux and airflow on the stoss slope of a barchan dune
Special Issue. Response of aeolian processes to global change
Auteur(s) et Affiliation(s)
LANCASTER, N.
Desert Research Institute, University and Community College System of Nevada, Reno, NV, Etats-Unis
LANCASTER, N.
Desert Research Institute, Quaternary Sciences Center, Reno, NV, Etats-Unis
Description :
Measurements of sediment flux on the windward slope of an isolated barchan using an array of 30 sand traps provide new data that can constrain models of dune dynamics. The data show that at low incident wind speeds, flux increases up the dune exponentially, whereas at higher wind speeds the increase with distance approaches linearity. The wind profile measurements demonstrate that conventional wind profiles, derived from anemometry on dunes, do not measure the part of the boundary layer that is significant for sediment transport.
Type de document :
Congrès
Source :
Workshop on Response of Aeolian Processes to Global Change, Zzyzx, Etats-Unis, 1994-03-24, Geomorphology (Amsterdam), issn : 0169-555X, 1996, vol. 17, n°. 1-3, p. 55-62, Collation : Illustration, Références bibliographiques : 11 ref.
Date :
1996
Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)