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Latest Pleistocene Increase in Wind Intensity Recorded in Eolian Sediments from Central Alaska

Published online by Cambridge University Press:  20 January 2017

Nancy Bigelow
Affiliation:
Department of Anthropology, University of Alaska, Fairbanks, Alaska 99775 USA
Jim Begét
Affiliation:
Department of Geology and Geophysics and University of Alaska Museum, University of Alaska, Fairbanks, Alaska 99775 USA
Roger Powers
Affiliation:
Department of Anthropology, University of Alaska, Fairbanks, Alaska 99775 USA

Abstract

A brief increase in wind intensity between ca. 11,100 and 10,700 yr B.P. is recorded by a sharp increase in sediment grain size at eolian sections along the Nenana River in central Alaska. This occurred at the same time as the Younger Dryas climatic reversal in northern Europe and an increase in the vigor of atmospheric circulation recorded by Greenland ice cores. Climatic fluctuations in high latitude areas during Younger Dryas time may reflect variations in the CO2 content of the atmosphere.

Type
Articles
Copyright
University of Washington

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