Journal ArticleDOI
A 17,000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation
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In this paper, a global oxygen isotope record for ocean water has been calculated from the Barbados sea level curve, allowing separation of the ice volume component common to all isotope records measured in deep-sea cores.Abstract:
Coral reefs drilled offshore of Barbados provide the first continuous and detailed record of sea level change during the last deglaciation. The sea level was 121 ± 5 metres below present level during the last glacial maximum. The deglacial sea level rise was not monotonic; rather, it was marked by two intervals of rapid rise. Varying rates of melt-water discharge to the North Atlantic surface ocean dramatically affected North Atlantic deep-water production and oceanic oxygen isotope chemistry. A global oxygen isotope record for ocean water has been calculated from the Barbados sea level curve, allowing separation of the ice volume component common to all oxygen isotope records measured in deep-sea cores.read more
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GLOBAL GLACIAL ISOSTASY AND THE SURFACE OF THE ICE-AGE EARTH: The ICE-5G (VM2) Model and GRACE
TL;DR: The impact of the changing surface ice load upon both Earth's shape and gravitational field, as well as upon sea-level history, have come to be measurable using a variety of geological and geophysical techniques.
Journal ArticleDOI
Southward Migration of the Intertropical Convergence Zone Through the Holocene
TL;DR: The Cariaco Basin record exhibits strong correlations with climate records from distant regions, including the high-latitude Northern Hemisphere, providing evidence for global teleconnections among regional climates.
Journal ArticleDOI
Sea-level and deep water temperature changes derived from benthic foraminifera isotopic records
Claire Waelbroeck,Laurent Labeyrie,Laurent Labeyrie,Elisabeth Michel,Jean-Claude Duplessy,Jerry F. McManus,Kurt Lambeck,Estelle Balbon,Monique Labracherie +8 more
TL;DR: In this paper, robust regressions were established between relative sea-level (RSL) data and benthic foraminifera oxygen isotopic ratios from the North Atlantic and Equatorial Pacific Ocean over the last climatic cycle.
Journal ArticleDOI
Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes
TL;DR: It is found that the meridional overturning was nearly, or completely, eliminated during the coldest deglacial interval in the North Atlantic region, beginning with the catastrophic iceberg discharge Heinrich event H1, 17,500’yr ago, and declined sharply but briefly into the Younger Dryas cold event, about 12,700 yr ago.
References
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Journal ArticleDOI
North Atlantic thermohaline circulation during the past 20,000 years linked to high-latitude surface temperature
Edward A. Boyle,Lloyd D Keigwin +1 more
TL;DR: In this paper, the authors show that during a surface cooling event 10,000 to 12,000 years ago, higher Cd/Ca and lower 13C/12C ratios are observed in benthic foraminifera shells from rapidly accumulating western North Atlantic sediments.
Journal ArticleDOI
The abrupt termination of the Younger Dryas climate event
TL;DR: In this article, the authors present detailed heavy-isotope and dust-concentration profiles which suggest that, in less than 20 years, the climate in the North Atlantic region turned into a milder and less stormy regime, as a consequence of a rapid retreat of the sea-ice cover.
Journal ArticleDOI
Global changes in postglacial sea level: A numerical calculation☆
TL;DR: The sea level rise due to ice-sheet melting since the last glacial maximum was not uniform everywhere because of the deformation of the Earth's surface and its geoid by changing ice and water loads.
Journal ArticleDOI
The North Atlantic Ocean during the last deglaciation
TL;DR: The last deglacial warming of the high-latitude North Atlantic Ocean (40°65°) occurred in three discrete steps: in the southeast and central regions at 13 000 B.P., in the central and northern sectors at 10 000 B., and in the western (Labrador Sea) sector between 9000 and 6500 B., with a major influx of products of glacial wastage (meltwater and icebergs) as mentioned in this paper.
Journal ArticleDOI
Routing of meltwater from the Laurentide Ice Sheet during the Younger Dryas cold episode
Wallace S. Broecker,James P. Kennett,Benjamin P. Flower,James T. Teller,Susan E. Trumbore,Georges Bonani,Willy Wolfli +6 more
TL;DR: In this article, the authors present oxygen isotope and accelerator radiocarbon measurements on planktonic foraminifera from Orca Basin core EN32-PC4 which reveal a significant reduction in meltwater flow through the Mississippi River to the Gulf of Mexico from about 11,200 to 10,000 years ago.
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