Wind erosion characteristics of Sahelian surface types

Auteur(s) et Affiliation(s)



Description :
The aim of this study was to determine and compare relative wind erosion potentials of the most representative surface types over a transect comprising most parts of southwestern Niger. For this purpose, mobile wind tunnel experiments were run on 26 dominant surface types. The effects of surface disturbance were additionally determined for 13 of these surfaces. The results, namely measurements of wind fields and mass fluxes, can be classified according to specific surface characteristics. Three basic surface groups with similar emission behaviour and aerodynamic characteristics were identified: (1) sand surfaces, (2) rough stone surfaces and (3) flat crusted surfaces. These results are comparable with field studies of natural erosion events and similar wind tunnel field campaigns.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2010, vol. 35, n°. 12, p. 1386-1401, nombre de pages : 16, Références bibliographiques : 41 ref.

Date :
2010

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