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  • Effects of soil moisture and dried raindroplet crust on saltation and dust emission

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    Author(s)
    Ishizuka, M
    Mikami, M
    Leys, J
    Yamada, Y
    Heidenreich, S
    Shao, Y
    McTainsh, GH
    Griffith University Author(s)
    McTainsh, Grant H.
    Year published
    2008
    Metadata
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    Abstract
    Field experiments using a sand particle counter and an optical particle counter clarified the links between saltation and dust emission under wet and weakly crusted conditions in a fallow field previously cultivated with wheat in Australia. A crust was formed by the impact of raindroplets after small precipitation events. A little soil moisture enhanced the strengths of crust and aggregation even though the soil was dried. Dust concentration was proportional to friction wind velocity, but the proportionality was dependent on ground surface conditions, such as the minimally dispersed particle size distribution of parent soil ...
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    Field experiments using a sand particle counter and an optical particle counter clarified the links between saltation and dust emission under wet and weakly crusted conditions in a fallow field previously cultivated with wheat in Australia. A crust was formed by the impact of raindroplets after small precipitation events. A little soil moisture enhanced the strengths of crust and aggregation even though the soil was dried. Dust concentration was proportional to friction wind velocity, but the proportionality was dependent on ground surface conditions, such as the minimally dispersed particle size distribution of parent soil and the presence or absence of crust.
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    Journal Title
    Journal of Geophysical Research: Atmospheres
    Volume
    113
    Issue
    D24212
    DOI
    https://doi.org/10.1029/2008JD009955
    Copyright Statement
    © 2008 American Geophysical Union. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Atmospheric sciences
    Sedimentology
    Physical geography and environmental geoscience
    Publication URI
    http://hdl.handle.net/10072/23474
    Collection
    • Journal articles

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