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Article: Enhanced sea-ice export from the Arctic during the Younger Dryas

TitleEnhanced sea-ice export from the Arctic during the Younger Dryas
Authors
Issue Date2012
Citation
Nature Communications, 2012, v. 3 How to Cite?
AbstractThe Younger Dryas cold spell of the last deglaciation and related slowing of the Atlantic meridional overturning circulation have been linked to a large array of processes, notably an influx of fresh water into the North Atlantic related to partial drainage of glacial Lake Agassiz. Here we observe a major drainage event, in marine sediment cores raised from the Lomonosov Ridge, in the central Arctic Ocean marked by a pulse in detrital dolomitic-limestones. This points to an Arctic-Canadian sediment source area with about fivefold higher Younger Dryas ice-rafting deposition rate, in comparison with the Holocene. Our findings thus support the hypothesis of a glacial drainage event in the Canadian Arctic area, at the onset of the Younger Dryas, enhancing sea-ice production and drifting through the Arctic, then export through Fram Strait, towards Atlantic meridional overturning circulation sites of the northern North Atlantic. © 2012 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/210084

 

DC FieldValueLanguage
dc.contributor.authorNot, Christelle-
dc.contributor.authorHillaire-Marcel, Claude-
dc.date.accessioned2015-05-22T06:06:33Z-
dc.date.available2015-05-22T06:06:33Z-
dc.date.issued2012-
dc.identifier.citationNature Communications, 2012, v. 3-
dc.identifier.urihttp://hdl.handle.net/10722/210084-
dc.description.abstractThe Younger Dryas cold spell of the last deglaciation and related slowing of the Atlantic meridional overturning circulation have been linked to a large array of processes, notably an influx of fresh water into the North Atlantic related to partial drainage of glacial Lake Agassiz. Here we observe a major drainage event, in marine sediment cores raised from the Lomonosov Ridge, in the central Arctic Ocean marked by a pulse in detrital dolomitic-limestones. This points to an Arctic-Canadian sediment source area with about fivefold higher Younger Dryas ice-rafting deposition rate, in comparison with the Holocene. Our findings thus support the hypothesis of a glacial drainage event in the Canadian Arctic area, at the onset of the Younger Dryas, enhancing sea-ice production and drifting through the Arctic, then export through Fram Strait, towards Atlantic meridional overturning circulation sites of the northern North Atlantic. © 2012 Macmillan Publishers Limited. All rights reserved.-
dc.languageeng-
dc.relation.ispartofNature Communications-
dc.titleEnhanced sea-ice export from the Arctic during the Younger Dryas-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1038/ncomms1658-
dc.identifier.pmid22337125-
dc.identifier.scopuseid_2-s2.0-84856754656-
dc.identifier.volume3-
dc.identifier.eissn2041-1723-

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