The effect of turbulent flow structures on saltation sand transport in the atmospheric boundary layer

Auteurs :
STERK, G.
JACOBS, A.F.G.
VAN BOXEL, J.H.

Description :
The effect of turbulent flow structures on saltation sand transport was studied during 2 convective storms in Niger, West Africa. Continuous, synchronous measurements of saltation fluxes and turbulent velocity fluctuations were made with a sampling frequency of 1Hz. The shear stress production was determined from the vertical and streamwise velocity fluctuations. The greatest stress-bearing events were classified as turbulent structures, with sweep, ejection, inward interaction, and outward interaction described according to the quadrant technique.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1998, vol. 23, n°. 10, p. 877-887, Collation : Illustration, Références bibliographiques : 33 ref.

Date :
1998

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley