21 Paleolimnological Records of Holocene Climate Change I
Tuesday, 13 March 2001
8:15 AM - 12:15 PM
THE PREBOREAL OSCILLATION IN EASTERN NORTH AMERICA
Paper number: 21-2
Program: THEME SESSIONS
Time: 8:30 AM – 8:50 AM
Authors
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R.W. SpearState Univ of New York, Geneseo, NY
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J. VincentUniv of New Brunswick, Fredericton, NB
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J. KurekUniv of New Brunswick, Fredericton, NB
Abstract
The Preboreal Oscillation is a short-lived (~200 yr) cooling that occurred early in the Holocene, centered at about 9600 yr BP (uncalibrated 14C yr). Originally discovered in NW Europe and well-documented in the Greenland ice cores and some North Atlantic marine records, there is scant evidence for it in eastern North America (Yu & Eicher, Science 282: 2235-2238). We have analyzed cores of lake sediment from Maritime Canada and the White Mountains of New Hampshire for their organic content, and used chironomid analysis to reconstruct past maximum lake-water temperatures. These analyses demonstrate the occurrence of the Preboreal Oscillation across this region.