10.1594/PANGAEA.734812
Vink, Annemiek
Annemiek
Vink
0000-0002-5178-9721
Rühlemann, Carsten
Carsten
Rühlemann
Zonneveld, Karin A F
Karin A F
Zonneveld
0000-0002-3390-1572
Mulitza, Stefan
Stefan
Mulitza
0000-0002-3842-1447
Hüls, Matthias
Matthias
Hüls
Willems, Helmut
Helmut
Willems
Dinoflagellate cyst of sediment core M35003-4 southeast of Grenada
PANGAEA
2001
Gravity corer (Kiel type)
M35/1
Meteor (1986)
South Atlantic in Late Quaternary: Reconstruction of Budget and Currents (SFB261)
1996-04-19T00:00:00
en
Supplementary Publication Series of Datasets
10.1029/2000PA000582
urn:nbn:de:gbv:46-ep000102797
2 datasets
application/zip
Creative Commons Attribution 3.0 Unported
High-resolution, well-dated calcareous dinoflagellate cyst and organic carbon records from a 58 kyr sediment core (M35003-4) located southeast of the island of Grenada show that rapid and pronounced changes in cyst association and accumulation and organic carbon deposition occurred, controlled by (1) a significant southward shift in the position of the North Equatorial Current during the last glacial period and the Younger Dryas cold interval and (2) rapid changes in local productivity in marine isotopic stage 3 that are associated with variations in Orinoco River nutrient discharge and coastal upwelling strength. Prominent cyst accumulation peaks representing extremely oligotrophic and stratified thermocline conditions mimic the Greenland ice core and northern Atlantic Dansgaard/Oeschger stadials and Heinrich events. We provide new evidence for a coupled tropical/high-latitude Atlantic climate system during the last glacial period and suggest that changes in the zonality of the low-latitude winds may play an important role in modulating rapid interhemispheric climate variability.
Supplement to: Vink, Annemiek; Rühlemann, Carsten; Zonneveld, Karin A F; Mulitza, Stefan; Hüls, Matthias; Willems, Helmut (2001): Shifts in the Position of the North Equatorial Current and Rapid Productivity Changes in the western Tropical Atlantic during the Last Glacial. Paleoceanography, 16(5), 479-490
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