Physics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3419706h&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 19, CiteID L19706
Physics
6
Global Change: Abrupt/Rapid Climate Change (4901, 8408), Biogeosciences: Limnology (1845, 4239, 4942), Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: Regional Climate Change, Biogeosciences: Climate Dynamics (1620)
Scientific paper
Northeastern North America experienced major climate shifts during the Pleistocene-Holocene transition. However, there have been no high-resolution isotopic records of climate change from this region. Here, we present a centennial-scale record of climate change during the transition based on D/H ratios of behenic acid (C22 n-acid) or δDBA from a sediment core in Blood Pond, Massachusetts. Surface calibrations from a transect of 19 lakes in eastern North America show that δDBA values track mean annual atmospheric temperature variations. The abrupt climate events observed in Blood Pond records show remarkable similarity with Greenland ice core δ 18O records during the Pleistocene. During the early Holocene, the northeastern North America δDBA record was more variable than Greenland, possibly due to the close proximity of the Laurentide ice sheet, and impact of freshwater outbursts as the ice sheet rapidly retreated.
Foster David R.
Hou Juzhi
Huang Yongsong
Oswald Wyatt W.
Shuman Bryan
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