Factors affecting the nature and rate of dust production from natural dune sands

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Title Factors affecting the nature and rate of dust production from natural dune sands
Author Bullard, Joanna E.; McTainsh, Grant Harvey; Pudmenzky, Christa
Journal Name Sedimentology
Year Published 2007
Place of publication United Kingdom
Publisher Blackwell Publishing Inc.
Abstract This paper evaluates the influence of natural sand particle characteristics on the amount and particle-size distributions of dust produced by aeolian abrasion. It contrasts with previous studies of aeolian abrasion by conducting experiments using: (i) whole sand samples, as opposed to selected size fractions; (ii) natural, mature dune sands, rather than artificial or freshly crushed material; and (iii) weathered sands that have acquired a superficial clay coating, instead of grains with clean surfaces. Whilst previous research has found clear, positive relationships between particle size, sorting, roundness and the amount of dust produced by aeolian abrasion, the relationships determined in this study show some variation according to the geomorphological context from which the original samples were obtained. The most important factor affecting the amount and particle-size characteristics of the dust produced was the presence of a clay coating on the grain surface that is removed by the abrasion process. The dust produced by this mechanism had a modal size of 2–5 μm and material <10 μm comprised up to 90% of the particles produced.
Peer Reviewed Yes
Published Yes
Publisher URI http://www3.interscience.wiley.com/journal/118503415/home
Alternative URI http://dx.doi.org/10.1111/j.1365-3091.2006.00827.x
Volume 54
Page from 169
Page to 182
ISSN 0037-0746
Date Accessioned 2008-05-09
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Environmental Chemistry (incl. Atmospheric Chemistry)
URI http://hdl.handle.net/10072/18825
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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