Mathematics – Logic
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1935s&link_type=abstract
Geophysical Research Letters, Volume 25, Issue 11, p. 1935-1938
Mathematics
Logic
9
Geochemistry: Isotopic Composition/Chemistry, Global Change, Oceanography: General: Limnology, Oceanography: Biological And Chemical: Stable Isotopes
Scientific paper
The first oxygen isotope analysis of biogenic opal from lake sediments, from the Alleröd/Younger Dryas transition in a core from Linsley Pond, Connecticut, gives an average estimate of a 6°C drop in temperature during the Younger Dryas. This shift represents temperatures during the bloom season, and may be less than the winter temperature drop. The sharp transition itself, with a duration of about 200 years, suggests that the temperature decrease may have been as large as 12°C. Previous estimates of the Alleröd/Younger Dryas temperature shifts are controversial, and range from 3-20°C, suggesting that further interdisciplinary research on the same samples is warranted.
Peteet Dorothy
Shemesh Aldo
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