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Science 14 June 2002:
Vol. 296. no. 5575, pp. 2018 - 2020
DOI: 10.1126/science.1069875
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Reports

A 160,000-Year Record of Dune Development and Atmospheric Circulation in Southern Arabia

Frank Preusser, Dirk Radies, Albert Matter

Aeolian deposits in the Wahiba Sands, Sultanate of Oman, reveal patterns of atmospheric circulation over the past 160,000 years. Luminescence dating indicates a correlation of dune activity with periods of low global sea level and decreased monsoon intensity. Evidence from dune orientation and sedimentary structures shows exclusively northbound transport of sand during times of high- latitude glaciation. These results are in contrast to the current paleocirculation model that assumes an increase of northwesterly winds because of a southward shift of the Intertropical Convergence Zone. Our results indicate that the circulation pattern during glacial times was comparable to that of the present.

Institut für Geologie, Universität Bern, Baltzerstrasse 1-3, CH-3012 Bern, Switzerland.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Fluvial solar signals.
C. Vita-Finzi (2008)
Geological Society, London, Special Publications 296, 105-115
   Abstract »    Full Text »    PDF »
Late Pleistocene eolian history of the Liwa region, Arabian Peninsula.
S. Stokes and H. E. Bray (2005)
GSA Bulletin 117, 1466-1480
   Abstract »    Full Text »    PDF »
Arid geomorphology.
J. E. Bullard (2004)
Progress in Physical Geography 28, 130-144
   PDF »
From Rifted Margins to Foreland Basins: Investigating Provenance and Sediment Dispersal Across Desert Arabia (Oman, U.A.E.).
(2003)
Journal of Sedimentary Research 73, 572-588


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Science. ISSN 0036-8075 (print), 1095-9203 (online)