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Geology; March 2006; v. 34; no. 3; p. 141-144; DOI: 10.1130/G22200.1
© 2006 Geological Society of America
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Warmings in the far northwestern Pacific promoted pre-Clovis immigration to America during Heinrich event 1

Michael Sarnthein*,1, Thorsten Kiefer2, Pieter M. Grootes3, Henry Elderfield4 and Helmut Erlenkeuser5

1 Institute for Geosciences, University of Kiel, Olshausenstrasse 40, 24118 Kiel, Germany
2 Institute for Geosciences, University of Kiel, Olshausenstrasse 40, 24118 Kiel, Germany, and Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
3 Leibniz Labor, University of Kiel, Max-Eyth Strasse 11, 24118 Kiel, Germany
4 Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
5 Leibniz Labor, University of Kiel, Max-Eyth Strasse 11, 24118 Kiel, Germany

Well-dated multidecadal- to centennial-scale sediment records from the subarctic northwest Pacific show that the early deglacial 18.5–15.0 ka was marked by 3 pronounced short-term warmings of ~5 °C. They lasted 500–1500 yr each and were coeval with early to late stages of cold Heinrich event 1 in the North Atlantic. These regional climate windows may have promoted a pre-Clovis emigration of people from the cold-arid monsoon climate in East Asia to the climatically more favorable, then-emerged Beringian and Aleutian shelf regions and the Americas, as suggested by archeological findings.

Key Words: subarctic North Pacific • sea-surface warming • paleoceanography • Heinrich I stadial • pre-Clovis immigration




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L. D. Keigwin, J. P. Donnelly, M. S. Cook, N. W. Driscoll, and J. Brigham-Grette
Rapid sea-level rise and Holocene climate in the Chukchi Sea
Geology, October 1, 2006; 34(10): 861 - 864.
[Abstract] [Full Text] [PDF]


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