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...
Main Authors: | , |
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Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1992
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.726262 https://doi.org/10.1594/PANGAEA.726262 |
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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