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(Article of periodic en Anglais - 2011)

Document title

Equations for the near-surface mass flux density profile of wind-blown sediments

Authors(s) and Affiliation(s)

DONG Z. (1 2) ; LU J. (1) ; MAN D. (1 3) ; LV P. (1) ; QIAN G. (1) ; ZHANG Z. (1) ; LUO W. (1) ;
(1) Key lab. of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), CAS, Lanzhou, CHINE
(2) Dep. of Geography, Normal Univ., Shaanxi, CHINE
(3) National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Inst., Minqin, CHINE

Abstract

The AA. evaluate several functions that have been proposed to describe the variation in mass flux density with height of wind-blown sediment, with the flux containing a mixture of particles in suspension and saltation, based on detailed field data at 4 land types in the Minqin area of north-western China, where severe wind erosion occurs. High-resolution mass flux density measurements at 50 heights were obtained using vertically segmented samplers. Three kinds of functions fit the measured flux density profiles reasonably well. The results suggest that the decay with height of mass flux density of sediments dominated by saltation particles as in the present study tends to follow a modified exponential function law, but a modified power function law replaces the modified exponential function law when the height extends to a level high enough to be dominated by suspension particles

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no10 [pp. 1292-1299]

Bibliographic references : 38 ref.

Collation : 6 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2151

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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