期刊
GEOLOGY
卷 34, 期 3, 页码 141-144出版社
GEOLOGICAL SOC AMER, INC
DOI: 10.1130/G22200.1
关键词
subarctic North Pacific; sea-surface warming; paleoceanography; Heinrich 1 stadial; pre-Clovis immigration
类别
Well-dated mulfidecadal- 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 similar to 5 degrees 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.
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