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(6GuelphInternat. Conf. on Aeolian Research (ICAR 6) en Anglais - 2008)

Document title

Meteorological controls on sand transport and dune morphology in a polar-desert : Victoria Valley, Antarctica

published at : ICAR 6 : Aeolian processes. Special issue

Authors(s) and Affiliation(s)

SPEIRS J.C. (1) ; MCGOWAN H.A. (1) ; NEIL D.T. (1) ;
(1) School of Geography, Planning and Architecture, Univ. of Queensland, Brisbane, AUSTRALIE

Abstract

Meteorological controls on sand transport and changes in dune morphology were monitored for 11 days in November-December 2004 on a barchan dune in the Victoria Valley, McMurdo Dry Valleys. Sand transport in this environment was found to be influenced by, 1) interparticle cohesion (ice-bonding); 2) diurnal variations in the speed of thermally driven easterly valley winds due to reduce solar heating by "night"; and 3) topographically modified foehn southwesterly winds. Warm, dry and gusty foehn southwesterly winds were found to promote aeolian processes by dislodging surface sediments, with dune morphology responding rapidly. As a result, change in the morphology of the dunes of the Victoria Valley may provide an early indication of change in regional weather and climate, possibly due to global climate change

Source

Congrès

Internat. Conf. on Aeolian Research (ICAR 6) No6, Guelph , CANADA (24/07/2006 - 26/07/2006)

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2008, vol. 33, no 12 [pp. 1875-1891]

Bibliographic references : 2 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1739

Prodig - Bibliographie Géographique Internationale (BGI)
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