(Article of periodic en Anglais - 2012)

Document title

Simulations of spatial variability in particle-size emissions during wind erosion events

Authors(s) and Affiliation(s)

BUTLER H.J. (1) ; MCTAINSH G.H. (2) ; HOGARTH W.L. (3) ;
(1) Australian Centre for Sustainable Catchments and Fac. of Engineering and Surveying, Univ. of Southern Queensland, Toowoomba, AUSTRALIE
(2) Atmospheric Environment Research Centre, The Griffith School of Environment, Griffith Univ., Queensland, Brisbane, AUSTRALIE
(3) Fac. of Science and Information Technology, Univ., New South Wales, Newcastle, AUSTRALIE


This study simulates how spatial variations in particle-size emissions from a playa affect bulk and size-resolved dust concentration profiles during 2 contrasting wind erosion events (a small local and a large regional event) in the Channel Country, Lake Eyre Basin, Australia. The regional event had higher dust concentration as a result of stronger frontal winds and higher erodibility across the playa. For each event, 2 emission scenarios are simulated to determine if measured size-resolved dust concentration profiles can be explained by spatial variability in source area emissions. The first scenario assumes that particle-size emissions from source areas occur at a uniform rate, while the second scenario assumes that particle-size emissions vary between and within source areas. The results suggest that the contribution of each particle-size to the total emitted dusts is not related to wind speed and turbulence


Article of periodic

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

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

Millesime : 2012, vol. 37, no13 [pp. 1362-1375]

Bibliographic references : 1 p.

Collation : 17 fig., 4 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3245

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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