Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes

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doi: 10.1038/nature 02494
Author(s): McManus, J. F.; François, R.; Gherardi, J. M.; Keigwin, L. D.; Brown-Leger, S.
Author Affiliation(s): Primary:
Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States
Laboratoire des Sciences du Climat et de l'Environnement, France
Volume Title: Nature (London)
Source: Nature (London), 428(6985), p.834-837. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 33 refs.; illus.
Summary: 231Pa/230Th measurements (a kinematic proxy for the meridional overturning circulation) are presented of a sediment core from the subtropical North Atlantic. The results record rapid acceleration of the residual overturning circulation concurrent with the two strongest regional warming events during deglaciation, and confirm significant variations in the rate of Atlantic residual overturning circulation with abrupt climate change. This meridional overturning was virtually or completely eliminated during the coldest deglacial interval in the North Atlantic.
Year of Publication: 2004
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 24 Surficial Geology, Quaternary Geology; Actinides; Atlantic Ocean; Bermuda Rise; Cenozoic; Climate change; Correlation; Deglaciation; Foraminifera; Geochemistry; Heinrich events; Ice cores; Invertebrata; Isotopes; Last glacial maximum; Leg 162; Marine sediments; Metals; North Atlantic; O-18/O-16; ODP Site 980; Ocean Drilling Program; Ocean circulation; Oxygen; Pa-231; Paleoclimatology; Pleistocene; Protactinium; Protista; Quaternary; Radioactive isotopes; Reconstruction; Rockall Bank; Sediments; Stable isotopes; Th-230; Thorium; Upper Pleistocene; Upper Weichselian; Weichselian; Younger Dryas
Coordinates: N552906 N552906 W0144208 W0144208
N334200 N334200 W0573500 W0573500
Record ID: 2005075599
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom