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North Atlantic deep water circulation collapse during Heinrich events

1999; Geological Society of America; Volume: 27; Issue: 1 Linguagem: Inglês

10.1130/0091-7613(1999)027 2.3.co;2

1943-2682

Dan Seidov, Mark Maslin,

Geological formations and processes

Research Article| January 01, 1999 North Atlantic deep water circulation collapse during Heinrich events Dan Seidov; Dan Seidov 1Earth System Science Center, Pennsylvania State University, University Park, Pennsylvania 16802-2711, USA Search for other works by this author on: GSW Google Scholar Mark Maslin Mark Maslin 2Environmental Change Research Centre, Department of Geography, University College London, 26 Bedford Way, London WC1H 0AP, United Kingdom Search for other works by this author on: GSW Google Scholar Author and Article Information Dan Seidov 1Earth System Science Center, Pennsylvania State University, University Park, Pennsylvania 16802-2711, USA Mark Maslin 2Environmental Change Research Centre, Department of Geography, University College London, 26 Bedford Way, London WC1H 0AP, United Kingdom Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (1): 23–26. https://doi.org/10.1130/0091-7613(1999)027 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Dan Seidov, Mark Maslin; North Atlantic deep water circulation collapse during Heinrich events. Geology 1999;; 27 (1): 23–26. doi: https://doi.org/10.1130/0091-7613(1999)027 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Paleoceanographic proxy data and ocean general circulation models have been combined to investigate the response of the North Atlantic Ocean to Heinrich-type meltwater episodes. Because of the uncertainties over the origin of the Heinrich events, three different scenarios have been modeled: (1) a Heinrich event caused by a dramatic increase in the iceberg discharge from the Laurentide ice sheet or Labrador ice shelf, (2) a Heinrich event driven by enhanced iceberg discharge from the Barents shelf, which was transported into the northern North Atlantic, and (3) a meltwater episode that was confined to the Nordic Seas. The ocean regional and global circulation models cannot distinguish between the Laurentide and Barents shelf Heinrich event scenarios because both led to a complete cessation of the deep-water thermohaline conveyor belt. The meltwater episode confined to the Nordic Seas only weakened the overturning and may represent circulation changes that may occur during the Dansgaard-Oeschger events. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.