Effects of Arctic freshwater forcing on thermohaline circulation during the Pleistocene

Research Article| December 01, 2007 Effects of Arctic freshwater forcing on thermohaline circulation during the Pleistocene Jochen Knies; Jochen Knies 1Geological Survey of Norway, Leiv Eirikssons vei 39, NO-7491 Trondheim, Norway Search for other works by this author on: GSW Google Scholar Jens Matthiessen; Jens Matthiessen 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Search for other works by this author on: GSW Google Scholar Andreas Mackensen; Andreas Mackensen 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Search for other works by this author on: GSW Google Scholar Ruediger Stein; Ruediger Stein 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Search for other works by this author on: GSW Google Scholar Christoph Vogt; Christoph Vogt 3University of Bremen, Klagenfurter Strasse, D-28359 Bremen, Germany Search for other works by this author on: GSW Google Scholar Thomas Frederichs; Thomas Frederichs 3University of Bremen, Klagenfurter Strasse, D-28359 Bremen, Germany Search for other works by this author on: GSW Google Scholar Seung-Il Nam Seung-Il Nam 4Korea Institute of Geoscience and Mineral Resources, 305-350 Daejeon, Korea Search for other works by this author on: GSW Google Scholar Author and Article Information Jochen Knies 1Geological Survey of Norway, Leiv Eirikssons vei 39, NO-7491 Trondheim, Norway Jens Matthiessen 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Andreas Mackensen 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Ruediger Stein 2Alfred Wegener Institute for Polar and Marine Research (AWI), Columbusstrasse, D-27568 Bremerhaven, Germany Christoph Vogt 3University of Bremen, Klagenfurter Strasse, D-28359 Bremen, Germany Thomas Frederichs 3University of Bremen, Klagenfurter Strasse, D-28359 Bremen, Germany Seung-Il Nam 4Korea Institute of Geoscience and Mineral Resources, 305-350 Daejeon, Korea Publisher: Geological Society of America Received: 23 Apr 2007 Revision Received: 10 Jul 2007 Accepted: 16 Jul 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2007) 35 (12): 1075–1078. https://doi.org/10.1130/G23966A.1 Article history Received: 23 Apr 2007 Revision Received: 10 Jul 2007 Accepted: 16 Jul 2007 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jochen Knies, Jens Matthiessen, Andreas Mackensen, Ruediger Stein, Christoph Vogt, Thomas Frederichs, Seung-Il Nam; Effects of Arctic freshwater forcing on thermohaline circulation during the Pleistocene. Geology 2007;; 35 (12): 1075–1078. doi: https://doi.org/10.1130/G23966A.1 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 In this paper, we make use of calcium carbonate-bearing sediment sequences in the Arctic-Atlantic gateway to produce a standard reference climate record for the Arctic Ocean. We present a continuous and exceptionally well-dated marine sediment record documenting the strong imprint of Arctic freshwater pulses on Earth's climate system throughout the past 0.8 m.y. Planktic foraminiferal oxygen and carbon isotope data reveal that freshwater plumes released from collapsing circum-Arctic ice sheets and ice-dammed lakes were advected to the Arctic Ocean gateway on sub-Milankovitch time scales. Given the close correspondence of Arctic freshwater pulses and strength of North Atlantic Deep Water formation as inferred from carbon isotope data, we conclude that freshening of the Arctic Ocean influenced thermohaline circulation more frequently than previously recognized. Our data show that it is critical for coupled atmosphere-ice-ocean general circulation models aimed at unraveling climate forcing factors during the Pleistocene to consider Arctic freshwater as a crucial forcing factor. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.