Evidence for direct suspension of loessial soils on the Columbia Plateau

Auteurs :
KJELGAARD, J.F.
CHANDLER, D.G.
SAXTON, K.E.

Description :
This paper presents field evidence of dust entrainment by direct aerodynamic suspension in the absence of significant saltation. They propose to examine whether saltation was occurring by utilizing actual friction velocity and roughness height measurements. Wind velocity data were analysed in conjunction with sediment trap particle size analysis and limited continuous PM 10 measurements from individual events. The data were from high-wind dust storms on the Columbia Plateau of Washington state, a region where prevalent farm practices expose large areas of bare soils to high winds.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2004, vol. 29, n°. 2, p. 221-236, nombre de pages : 16, Collation : Illustration, Références bibliographiques : 52 ref.

Date :
2004

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