• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Hydrographic changes in the eastern subpolar North Atlantic during the last deglaciation

    Thumbnail
    View/Open
    Benway_Manuscript_QSR_with_figs.pdf (699.1Kb)
    Date
    2010-08
    Author
    Benway, Heather M.  Concept link
    McManus, Jerry F.  Concept link
    Oppo, Delia W.  Concept link
    Cullen, James L.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/4195
    As published
    https://doi.org/10.1016/j.quascirev.2010.08.013
    Related Material/Data
    http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:3886209056878734::::P1_STUDY_ID:14413
    Abstract
    Millennial-scale climate fluctuations of the last deglaciation have been tied to abrupt changes in the Atlantic Meridional Overturning Circulation (MOC). A key to understanding mechanisms of MOC collapse and recovery is the documentation of upper ocean hydrographic changes in the vicinity of North Atlantic deep convection sites. Here we present new high-resolution ocean temperature and δ18Osw records spanning the last deglaciation from an eastern subpolar North Atlantic site that lies along the flow path of the North Atlantic Current, approaching deep convection sites in the Labrador and Greenland-Iceland-Norwegian (GIN) Seas. High-resolution temperature and δ18Osw records from subpolar Site 980 help track the movement of the subpolar/subtropical front associated with temperature and Atlantic MOC changes throughout the last deglaciation. Distinct δ18Osw minima during Heinrich-1 (H1) and the Younger Dryas (YD) correspond with peaks in ice-rafted debris and periods of reduced Atlantic MOC, indicating the presence of melt water in this region that could have contributed to MOC reductions during these intervals. Increased tropical and subtropical δ18Osw during these periods of apparent freshening in the subpolar North Atlantic suggest a buildup of salt at low latitudes that served as a negative feedback on reduced Atlantic MOC.
    Description
    Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Quaternary Science Reviews 29 (2010): 3336-3345, doi:10.1016/j.quascirev.2010.08.013.
    Collections
    • Marine Chemistry and Geochemistry (MC&G)
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Benway, Heather M., McManus, Jerry F., Oppo, Delia W., Cullen, James L., "Hydrographic changes in the eastern subpolar North Atlantic during the last deglaciation", 2010-08, https://doi.org/10.1016/j.quascirev.2010.08.013, https://hdl.handle.net/1912/4195
     
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo