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

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Title High resolution provenancing of long travelled dust deposited in the Southern Alps, New Zealand
Author McGowan, Hamish A.; Kamber, Balz; McTainsh, Grant Harvey; Marx, Samuel K.
Journal Name Geomorphology
Year Published 2005
Place of publication Netherlands
Publisher Elsevier
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 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.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.elsevier.com/wps/find/journaldescription.cws_home/503334/description#description
Alternative URI http://dx.doi.org/10.1016/j.geomorph.2005.01.005
Volume 69
Page from 208
Page to 221
ISSN 0169-555X
Date Accessioned 2006-03-24
Date Available 2009-10-01T05:58:27Z
Language en_AU
Research Centre Atmospheric Environment Research Centre
Faculty Faculty of Environmental Sciences
Subject PRE2009-Geomorphology
URI http://hdl.handle.net/10072/4321
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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