Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/33317

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Title
Kinky profiles: effects of soil surface heating upon vertical dust concentration profiles in the Channel Country of western Queensland, Australia
Author/Creator
Butler, H. J.;  Tainsh, G. H.;  Hogarth, W. L.;  Leys, J. F.
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Science
Description
In rangelands, unlike cultivated fields, soil surface conditions and vegetation cover are far from uniform. Field measurements taken within rangeland environments show that the shape of vertical dust concentration profiles can vary significantly between wind erosion events. Regression fits used to analyze vertical dust concentration profiles are therefore better for some events than others. Such variability has usually been explained as experimental error (or noise) or as a result of the nonuniformity of surface conditions. A computer simulation model (DSism) is used to examine this variability in terms of wind erosion processes. Analysis of these simulation results together with field observations shows that nonuniformity in surface conditions alone cannot explain variations observed in the vertical dust concentration profiles. These same simulations suggest that much of the variability in vertical dust concentration profiles is the result of thermal heating of the soil surface.
Relation
Journal of Geophysical Research: Earth Surface Vol. 110
Publisher Link
http://dx.doi.org/10.1029/2004JF000272
Date
2005
Publisher
American Geophysical Union
Keyword(s)
wind erosion;  thermal heating;  rangelands
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/33317
Identifier
ISSN:0148-0227
Reviewed
Reviewed
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Subject
"Journal of Geophysical Research: Earth Surface"
 
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