Rapid changes in ocean circulation and heat flux in the Nordic seas during the last interglacial period

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doi: 10.1038/383806a0
Author(s): Fronval, Torben; Jansen, Eystein
Author Affiliation(s): Primary:
University of Bergen, Department of Geology, Bergen, Norway
Volume Title: Nature (London)
Source: Nature (London), 383(6603), p.806-810. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 35 refs.; illus., incl. sketch map
Summary: Analyses of Δ18O are presented of vertical profiles through three marine sediment cores from the Voring Plateau, N Iceland plateau and the W Iceland plateau. These cores represent the last interglacial period. The data show three large sea-surface T fluctuations, a weakening of the E-W sea-surface T gradient with time, and changes in deep-water properties. Similar analyses of a core from the same region indicate that the sea-surface T during the Holocene was relatively stable. Rapid changes in ocean circulation and in oceanic heat fluxes at high N latitudes during the last interglacial period may have been associated with marked T changes on adjacent continents.
Year of Publication: 1996
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Arctic Ocean; Atlantic Ocean; Cenozoic; Climate-induced circulation; Foraminifera; Greenland Sea; HM52-43 Site; HM57-7 Site; HM71-19 Site; Heat flux; Holocene; Iceland Plateau; Invertebrata; Isotopes; Leg 104; North Atlantic; Norwegian Sea; O-18/O-16; ODP Site 644; Ocean Drilling Program; Oxygen; Paleo-oceanography; Paleocirculation; Paleoclimatology; Paleotemperature; Protista; Quaternary; Stable isotopes; Voring Plateau
Coordinates: N664042 N674254 E0043436 E0010200
N664042 N664042 E0043436 E0043436
Record ID: 1997006689
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom