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  • 3280N; 82bisF; CALYPSO; Calypso Corer; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2304; MD99-2305; Spitsbergen slope; Van Mijenfjorden  (1)
  • 3473N/F; CALYPSO; Calypso Corer; IMAGES V; International Polar Year (2007-2008); IPY; Lofoten Basin drift; Marion Dufresne (1995); MD114; MD99-2294  (1)
  • 82bisF; Age, 14C AMS; Age, 14C calibrated, CALIB 4.3 (Stuiver et al., 1998); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Calendar age; CALYPSO; Calypso Corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2305; Sample code/label; Van Mijenfjorden  (1)
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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Hald, Morten; Ebbesen, Hanne; Forwick, Matthias; Godtliebsen, Fred; Khomenko, Liza; Korsun, Sergei; Ringstad Olsen, Lena; Vorren, Tore O (2004): Holocene paleoceanography and glacial history of the West Spitzbergen area, Euro-Arctic margin. Quaternary Science Reviews, 23(20-21), 2075-2088, https://doi.org/10.1016/j.quascirev.2004.08.006
    Publication Date: 2023-06-27
    Description: Two sediment cores from the West Spitsbergen area, Euro-Arctic margin, MD99-2304 and MD99-2305, have been investigated for paleoceanographic proxies, including benthic and planktonic foraminifera, benthic foraminiferal stable isotopes and ice rafted debris. Core MD99-2304 is located on the upper continental margin, reflecting variations in the influx of Atlantic Water in the West Spitsbergen Current. Core MD99-2305 is located in Van Mijenfjord, picturing variations in tidewater glacier activity as well as fjord-ocean circulation changes. Surface water warmer than today, was present on the margin as soon as the Van Mijenfjord was deglaciated by 11,200 cal. years BP. Relatively warm water invaded the fjord bottom almost immediately after the deglaciation. A relatively warm early Holocene was followed by an abrupt cooling at 8800 cal. years BP on the continental margin. Another cooling in the fjord record, 8000-4000 cal. years BP, is documented by an increase in ice rafted debris and an increase in benthic foraminiferal delta18O. The IRD-record indicates that central Spitsbergen never was completely deglaciated during the Holocene. Relatively cool and stable conditions similar to the present were established about 4000 cal. years BP.
    Keywords: 3280N; 82bisF; CALYPSO; Calypso Corer; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2304; MD99-2305; Spitsbergen slope; Van Mijenfjorden
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-06-27
    Keywords: 82bisF; Age, 14C AMS; Age, 14C calibrated, CALIB 4.3 (Stuiver et al., 1998); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Calendar age; CALYPSO; Calypso Corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2305; Sample code/label; Van Mijenfjorden
    Type: Dataset
    Format: text/tab-separated-values, 183 data points
    Location Call Number Limitation Availability
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  • 3
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Rørvik, Kari-Lise; Laberg, Jan Sverre; Hald, Morten; Ravna, E K; Vorren, Tore O (2010): Behavior of the northwestern part of the Fennoscandian Ice Sheet during the Last Glacial Maximum – a response to external forcing. Quaternary Science Reviews, 29(17-18), 2224-2237, https://doi.org/10.1016/j.quascirev.2010.05.022
    Publication Date: 2023-12-13
    Description: A sediment core from the Lofoten Contourite Drift on the continental slope off Northern Norway, proximal to the former Vestfjorden-Trsnadjupet Ice Stream, details the development, variability and decline of marine margins of the northwestern Fennoscandian Ice Sheet during the time interval 25.3-14 cal ka BP, including the Last Glacial Maximum and onset of the deglaciation based on high-resolution IRD records. From the core interval between 25.3 and 17.7 cal ka BP we report data points with a mean time step of 10 years, between 17.7 cal ka BP and the Holocene time steps are typically 50 years. The core is divided into 7 informal ice-rafted debris (IRD) zones based on the variations in IRD including 7 major IRD maxima (A-G), inferred to represent periods of high iceberg production. Petrological identification reveals dominance of crystalline IRD (monocrystalline, plutonic and metamorphic rock fragments) accounting for 75-80% of total IRD assemblages, while sedimentary fragments generally account for 15-20%. The crystalline fragments (including eclogite and mangerite from a nearby terrestrial source) increase across the IRD peaks while the sedimentary fragments remain constant. This points to the importance of erosional products from icebergs originating from fast-flowing paleo-ice streams including the Vestfjorden-Trsnadjupet Ice Stream draining from the Fennoscandian mainland during the IRD maxima periods. Increased temperature of the adjacent surface water masses was probably an important external forcing factor on the Fennoscandian Ice Sheet behavior because some IRD maxima and plumite deposition from meltwater plumes post-date periods of increased sea surface temperatures. The peak IRD depositions occur in centennial and millennial time cycles (~200, 1030 and 3900 year) indicating some external forcing by solar variation. Both mechanisms could explain the observed synchronous instability of the northwestern Fennoscandian Ice Sheet to other European Ice Sheets.
    Keywords: 3473N/F; CALYPSO; Calypso Corer; IMAGES V; International Polar Year (2007-2008); IPY; Lofoten Basin drift; Marion Dufresne (1995); MD114; MD99-2294
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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