Kinky profiles: effects of soil surface heating upon vertical dust concentration profiles in the Channel Country of western Queensland, Australia

Article

Butler, H. J., McTainsh, G. H., Hogarth, W. L. and Leys, J. F.. 2005. "Kinky profiles: effects of soil surface heating upon vertical dust concentration profiles in the Channel Country of western Queensland, Australia." Journal of Geophysical Research. 110 (F4), pp. 1-14. https://doi.org/10.1029/2004JF000272
Article Title

Kinky profiles: effects of soil surface heating upon vertical dust concentration profiles in the Channel Country of western Queensland, Australia

ERA Journal ID1878
Article CategoryArticle
AuthorsButler, H. J. (Author), McTainsh, G. H. (Author), Hogarth, W. L. (Author) and Leys, J. F. (Author)
Journal TitleJournal of Geophysical Research
Journal Citation110 (F4), pp. 1-14
Number of Pages14
Year2005
Place of PublicationUnited States
ISSN0148-0227
2156-2202
Digital Object Identifier (DOI)https://doi.org/10.1029/2004JF000272
Web Address (URL)http://www.agu.org/pubs/crossref/2005/2004JF000272.shtml
Abstract

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.

Keywordswind erosion; dust concentration profiles
ANZSRC Field of Research 2020370903. Natural hazards
410406. Natural resource management
410605. Soil physics
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Byline AffiliationsDepartment of Mathematics and Computing
Griffith University
University of Newcastle
Department of Infrastructure, Planning and Natural Resources, New South Wales
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