1. Radiocarbon Variability in the Western North Atlantic During the Last Deglaciation.
- Author
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Robinson, Laura F., Adkins, Jess F., Keigwin, Lloyd D., Southon, John, Fernandez, Diego P., Wang, S-L, and Scheirer, Daniel S.
- Subjects
- *
CARBON isotopes , *RADIOACTIVITY , *CORALS , *ZOANTHARIA , *FORAMINIFERA , *GLACIAL climates - Abstract
We present a detailed history of glacial to Holocene radiocarbon in the deep western North Atlantic from deep-sea corals and paired benthic-planktonic foraminifera. The deglaciation is marked by switches between radiocarbon-enriched and -depleted waters, leading to large radiocarbon gradients in the water column. These changes played an important role in modulating atmospheric radiocarbon. The deep-ocean record supports the notion of a bipolar seesaw with increased Northern-source deep-water formation linked to Northern Hemisphere warming and the reverse. In contrast, the more frequent radiocarbon variations in the intermediate/deep ocean are associated with roughly synchronous changes at the poles. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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