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Polyak, Leonid; Stanovoy, Vladimir V; Lubinski, David J (2003): Stable isotopes of benthic foraminifera of the Kara Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.842421, Supplement to: Polyak, L et al. (2003): Stable isotopes in benthic foraminiferal calcite from a river-influenced Arctic marine environment, Kara and Pechora Seas. Paleoceanography, 18(1), 1003, https://doi.org/10.1029/2001PA000752

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Abstract:
Oxygen and carbon stable-isotope compositions of modern benthic foraminifera in the Kara and Pechora estuarine regions of the Arctic continental shelf were compared with water d18O, d13CDIC, temperature, and salinity. The foraminiferal d18O distribution is mostly similar to that of equilibrium calcite, primarily controlled by mixing of runoff and seawater in near-estuarine areas (depth < 15-20 m), with additional temperature control seaward. The d13C composition is controlled by remineralization of organic matter, mostly imported by rivers, and by water mixing. Most analyses used the common Arctic foraminifer Elphidium excavatum forma clavata, which yields depleted d13C, as expected for an infaunal species. Isotope records for sediment cores off the Pechora and Yenisey rivers show a decelerating rise in isotope values, of up to 10 per mil in d18O, over the last 10 kyr in a pattern similar to that of rising sea level and concomitant retreat of river mouths, with local complexities probably resulting from glacio-isostatic rebound and changes in sedimentation.
Coverage:
Median Latitude: 73.792174 * Median Longitude: 66.564936 * South-bound Latitude: 68.750000 * West-bound Longitude: 50.080000 * North-bound Latitude: 77.750000 * East-bound Longitude: 81.667000
Date/Time Start: 1997-09-16T12:53:00 * Date/Time End: 1998-08-01T00:00:00
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. Polyak, L; Stanovoy, VV; Lubinski, DJ (2003): (Table 4) Stable oxygen isotope composition of water samples of the Kara Sea. https://doi.org/10.1594/PANGAEA.842420
  2. Polyak, L; Stanovoy, VV; Lubinski, DJ (2003): (Table 3) Stable isotope composition of benthic foraminifera from Kara Sea sediment cores. https://doi.org/10.1594/PANGAEA.842418
  3. Polyak, L; Stanovoy, VV; Lubinski, DJ (2003): (Table 2) Stable isotope composition of benthic foraminifera from surface sediments of the Kara Sea. https://doi.org/10.1594/PANGAEA.842416
  4. Polyak, L; Stanovoy, VV; Lubinski, DJ (2003): (Table 2) Temperature and salinity of bottom water of the Kara Sea. https://doi.org/10.1594/PANGAEA.842417