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Duplessy, Jean-Claude; Cortijo, Elsa; Ivanova, Elena V; Khusid, Tatyana A; Labeyrie, Laurent D; Levitan, Mikhail A; Murdmaa, Ivar O; Paterne, Martine (2005): Stable isotope record of foraminifera from the Barents Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.835326, Supplement to: Duplessy, J-C et al. (2005): Paleoceanography of the Barents Sea during the Holocene. Paleoceanography, 20(4), PA4004, https://doi.org/10.1029/2004PA001116

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Abstract:
We measured the oxygen isotopic composition of planktonic and benthic foraminifera in three cores collected at key positions to reconstruct the paleoceanography of the Barents Sea: core ASV 880 on the path of the northern branch of Atlantic water inflowing from the Arctic Ocean, core ASV 1200 in the central basin near the polar front, and core ASV 1157 in the main area of brine formation. Modern seawater d18O measurements show that far from the coast, d18O variations are linearly linked to the salinity changes associated with sea ice melting. The foraminifer d18O records are dated by 14C measurements performed on mollusk shells, and they provide a detailed reconstruction of the paleoceanographic evolution of the Barents Sea during the Holocene. Four main steps were recognized: the terminal phase of the deglaciation with melting of the main glaciers, which were located on the surrounding continent and islands, the short thermal optimum from 7.8 ka B.P. to 6.8 ka B.P., a cold mid-Holocene phase with a large reduction of the inflow of Atlantic water, and the inception of the modern hydrological pattern by 4.7 ka B.P. Brine water formation was active during the whole Holocene. The paleoclimatic evolution of the Barents Sea was driven by both high-latitude summer insolation and the intensity of the Atlantic water inflow.
Coverage:
Median Latitude: 73.897937 * Median Longitude: 45.430187 * South-bound Latitude: 70.550000 * West-bound Longitude: 41.008300 * North-bound Latitude: 75.906700 * East-bound Longitude: 52.800000
Date/Time Start: 1998-08-31T00:00:00 * Date/Time End: 1998-08-31T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Duplessy, J-C; Cortijo, E; Ivanova, EV et al. (2005): (Table 1) Age determination of sediment cores ASV13_1157-GC and ASV13_1200. https://doi.org/10.1594/PANGAEA.835322
  2. Duplessy, J-C; Cortijo, E; Ivanova, EV et al. (2005): (Table 2) Stable isotope record of Nonion labradoricum in sediment core ASV13_1157-GC. https://doi.org/10.1594/PANGAEA.835325
  3. Duplessy, J-C; Cortijo, E; Ivanova, EV et al. (2005): (Table 2) Stable isotope record of Elphidium exclavatum in sediment core ASV13_1200. https://doi.org/10.1594/PANGAEA.835324
  4. Duplessy, J-C; Cortijo, E; Ivanova, EV et al. (2005): (Table 2) Stable isotope record of Neogloboquadrina pachyderma in sediment core ASV13_1200. https://doi.org/10.1594/PANGAEA.835323