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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Gross erosion, net erosion and gross deposition of dust by wind: field data from 17 desert surfaces

Auteur(s) et Affiliation(s)

GOOSSENS, D.
Dep. of Geoscience, Univ. of Nevada, Las Vegas, Etats-Unis
Physical and Regional Geography Research Group, Katholieke Univ., Leuven, Belgique
BUCK, B.
Dep. of Geoscience, Univ. of Nevada, Las Vegas, Etats-Unis


Description :
Wind erosion measurements were carried out in Nellis Dunes Recreation Area, southern Nevada, USA. Gross erosion (the total mass of sediment effectively blown away from a surface), gross deposition (the total mass of sediment effectively depositing on a surface) and net erosion (the difference in sediment mass before and after an event) were measured for 1 year, on 17 different types of surfaces developed on loose dune sand, compacted sand, loose silt, compacted and/or aggregated silt, rock-covered sands and silts, mixtures of sand, silt and clay, exposed petrocalcic horizons, gravelly substrata and bedrock. Results showed that net erosion, which is the type of erosion measured in field and laboratory experiments, strongly differs from gross erosion. The study suggests that interactions exist between the type of surface and the susceptibility of particles to wind erosion.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2011, vol. 36, n°. 5, p. 610-623, nombre de pages : 14, Références bibliographiques : 1 p.

Date :
2011

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

Langue :
Anglais
Droits :
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