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

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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 Butler, H.J.; McTainsh, Grant Harvey; Hogarth, W.L.; Leys, J.F.
Journal Name Journal of Geophysical Research
Year Published 2005
Place of publication USA
Publisher American Geophysical Union
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.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.agu.org/journals/jf/
Alternative URI http://dx.doi.org/10.1029/2004JF000272
Volume 110
Issue Number F4
Page from 1
Page to 14
ISSN 0148-0227
Date Accessioned 2006-03-23
Language en_AU
Faculty Faculty of Environmental Sciences
Subject PRE2009-Atmospheric Sciences; PRE2009-Geomorphology
URI http://hdl.handle.net/10072/4317
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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