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  • High resolution provenancing of long travelled dust deposited in the Southern Alps, New Zealand

    Author(s)
    McGowan, HA
    Kamber, B
    McTainsh, GH
    Marx, SK
    Griffith University Author(s)
    McTainsh, Grant H.
    Year published
    2005
    Metadata
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    Abstract
    On 7 February 2000 an atypical orange discolouration of snowfields in the central Southern Alps, New Zealand occurred following the passage of a cold front. Analysis of snow samples identified fine orangey-brown dust mixed with much coarser grey dust. Air parcel forward trajectories from dust sources in southern and central Australia, where dust storms were reported on 4 February 2000, were computed to identify the deposits source. Geochemical analyses of the dust deposit using 26 trace elements, unaffected by regional air pollution and gravitational sorting, indicate that 20% of the dust was sourced from western New South ...
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    On 7 February 2000 an atypical orange discolouration of snowfields in the central Southern Alps, New Zealand occurred following the passage of a cold front. Analysis of snow samples identified fine orangey-brown dust mixed with much coarser grey dust. Air parcel forward trajectories from dust sources in southern and central Australia, where dust storms were reported on 4 February 2000, were computed to identify the deposits source. Geochemical analyses of the dust deposit using 26 trace elements, unaffected by regional air pollution and gravitational sorting, indicate that 20% of the dust was sourced from western New South Wales, with 45% from the eastern Eyre Peninsula of South Australia and the remaining 35% was local New Zealand dust. This provenancing approach provides a spatial resolution of long travelled dust sourcing not previously achieved.
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    Journal Title
    Geomorphology
    Volume
    69
    Publisher URI
    http://www.elsevier.com/wps/find/journaldescription.cws_home/503334/description#description
    DOI
    https://doi.org/10.1016/j.geomorph.2005.01.005
    Subject
    Geology
    Physical geography and environmental geoscience
    Publication URI
    http://hdl.handle.net/10072/4321
    Collection
    • Journal articles

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