Age determination and stable isotope ratios of sediment core RC11-83

The Southern Ocean is perhaps the only region where fluctuations in the global influence of North Atlantic Deep Water (NADW) can be monitored unambiguously in single deep-sea cores. A carbon isotope record from benthic foraminifera in a Southern Ocean core reveals large and rapid changes in the flux...

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Bibliographic Details
Main Authors: Charles, Christopher D, Fairbanks, Richard G
Format: Dataset
Language:English
Published: PANGAEA 1992
Subjects:
PC
Piston corer
RC11
RC1112
RC11-83
Robert Conrad
Southern Ocean
NADW
North Atlantic Deep Water
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.726262
https://doi.org/10.1594/PANGAEA.726262
Description
Summary:The Southern Ocean is perhaps the only region where fluctuations in the global influence of North Atlantic Deep Water (NADW) can be monitored unambiguously in single deep-sea cores. A carbon isotope record from benthic foraminifera in a Southern Ocean core reveals large and rapid changes in the flux of NADW during the last deglaciation, and an abrupt increase in the NADW production rate which immediately preceded large-scale melting of the Northern Hemisphere ice sheets. This sudden strengthening of the NADW thermoha-line cell provides strong evidence for the importance of NADW in glacial-interglacial climate change.

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