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Flux of Eolian Sediment in the McMurdo Dry Valleys, Antarctica: A Preliminary Assessment

Nicholas Lancaster
Arctic, Antarctic, and Alpine Research
Vol. 34, No. 3 (Aug., 2002), pp. 318-323
DOI: 10.2307/1552490
Stable URL: http://www.jstor.org/stable/1552490
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Flux of Eolian Sediment in the McMurdo Dry Valleys, Antarctica: A Preliminary Assessment
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Abstract

Data from passive sediment traps installed at locations throughout the McMurdo Dry Valleys of Antarctica provide for an initial assessment of rates of transport of dust (sediment transported in suspension by wind) in these areas. The flux of eolian sediment in these areas is divided into material of sand and silt and clay size. Sites in close proximity to the valley floors tend to be dominated by movement of sand, whereas sites on ice-covered lakes and glaciers are dominated by transport of silt- and clay-sized sediment. Material transported by wind is likely derived from distal fluvial sediments. Rates of dust flux are generally much lower than in other desert environments. Controls on the flux of eolian material in this environment appear to be sediment supply and, to a lesser extent, wind speed.

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