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

Online Access: Get full text
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
Other:
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
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245 1 0 |a Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes 
300 |a p. 834-837 
500 |a In English. 33 refs. 
500 |a Research program: ODP Ocean Drilling Program 
500 |a Affiliation: Woods Hole Oceanographic Institution, Department of Geology and Geophysics; Woods Hole, MA; USA; United States 
500 |a Affiliation: Laboratoire des Sciences du Climat et de l'Environnement; ; FRA; France 
500 |a Source note: Nature (London), 428(6985), p.834-837. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 
500 |a Publication type: journal article 
504 |b 33 refs. 
510 3 |a GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom 
520 |a >231`Pa/>230`Th 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. 
650 7 |a Actinides  |2 georeft 
650 7 |a Cenozoic  |2 georeft 
650 7 |a Climate change  |2 georeft 
650 7 |a Correlation  |2 georeft 
650 7 |a Deglaciation  |2 georeft 
650 7 |a Foraminifera  |2 georeft 
650 7 |a Geochemistry  |2 georeft 
650 7 |a Heinrich events  |2 georeft 
650 7 |a Ice cores  |2 georeft 
650 7 |a Isotopes  |2 georeft 
650 7 |a Last glacial maximum  |2 georeft 
650 7 |a Marine sediments  |2 georeft 
650 7 |a Metals  |2 georeft 
650 7 |a O-18/O-16  |2 georeft 
650 7 |a Ocean circulation  |2 georeft 
650 7 |a Ocean Drilling Program  |2 georeft 
650 7 |a Oxygen  |2 georeft 
650 7 |a Pa-231  |2 georeft 
650 7 |a Paleoclimatology  |2 georeft 
650 7 |a Pleistocene  |2 georeft 
650 7 |a Protactinium  |2 georeft 
650 7 |a Quaternary  |2 georeft 
650 7 |a Radioactive isotopes  |2 georeft 
650 7 |a Reconstruction  |2 georeft 
650 7 |a Sediments  |2 georeft 
650 7 |a Stable isotopes  |2 georeft 
650 7 |a Th-230  |2 georeft 
650 7 |a Thorium  |2 georeft 
650 7 |a Upper Pleistocene  |2 georeft 
650 7 |a Upper Weichselian  |2 georeft 
650 7 |a Weichselian  |2 georeft 
650 7 |a Younger Dryas  |2 georeft 
651 7 |a Atlantic Ocean  |2 georeft 
651 7 |a Bermuda Rise  |2 georeft 
651 7 |a Leg 162  |2 georeft 
651 7 |a North Atlantic  |2 georeft 
651 7 |a ODP Site 980  |2 georeft 
651 7 |a Rockall Bank  |2 georeft 
653 |a Invertebrata 
653 |a Protista 
700 1 |a François, R., 
700 1 |a Gherardi, J. M., 
700 1 |a Keigwin, L. D., 
700 1 |a Brown-Leger, S., 
773 0 |t Nature (London)  |d London : Macmillan Journals, Apr. , 22 2004  |x 0028-0836  |y NATUAS  |n Nature (London), 428(6985), p.834-837. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 Publication type: journal article  |g Vol. 428, no. 6985  |h illus. 
856 |u urn:doi: 10.1038/nature 02494