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Niessen, Frank; Hong, Jong Kuk; Hegewald, Anne; Matthiessen, Jens; Stein, Ruediger; Kim, Hyoungjun; Kim, Sookwan; Jensen, Laura; Jokat, Wilfried; Nam, Seung-Il; Kang, Sung-Ho (2013): Parasound profiles and multibeam surveys in the Arctic Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.810972, Supplement to: Niessen, F et al. (2013): Repeated Pleistocene glaciation of the East Siberian continental margin. Nature Geoscience, 6, 842-846, https://doi.org/10.1038/ngeo1904

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Abstract:
During the Pleistocene glaciations, Arctic ice sheets on western Eurasia, Greenland and North America terminated at their continental margins. In contrast, the exposed continental shelves in the Beringian region of Siberia are thought to have been covered by a tundra landscape. Evidence of grounded ice on seafloor ridges and plateaux off the coast of the Beringian margin, at depths of up to 1,000 m, have generally been attributed to ice shelves or giant icebergs that spread oceanwards during glacial maxima. Here we identify marine glaciogenic landforms visible in seismic profiles and detailed bathymetric maps along the East Siberian continental margin. We interpret these features, which occur in present water depths of up to 1,200 m, as traces from grounding events of ice sheets and ice shelves. We conclude that the Siberian Shelf edge and parts of the Arctic Ocean were covered by ice sheets of about 1 km in thickness during several Pleistocene glaciations before the most recent glacial period, which must have had a significant influence on albedo and oceanic and atmospheric circulation.
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Median Latitude: 76.978844 * Median Longitude: 176.620306 * South-bound Latitude: 75.485356 * West-bound Longitude: 172.961992 * North-bound Latitude: 78.051200 * East-bound Longitude: -176.762835
Date/Time Start: 2008-08-12T09:00:00 * Date/Time End: 2012-08-24T17:20:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from ARAON cruise ARA3B. https://doi.org/10.1594/PANGAEA.811462
  2. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from POLARSTERN cruise ARK-XXIII/3, 2008-09-02 07:00 to 07:45. https://doi.org/10.1594/PANGAEA.810438
  3. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from POLARSTERN cruise ARK-XXIII/3, 2008-09-02 10:40 to 11:30. https://doi.org/10.1594/PANGAEA.810439
  4. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from POLARSTERN cruise ARK-XXIII/3, 2008-09-02 12:30 to 13:50. https://doi.org/10.1594/PANGAEA.810440
  5. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from POLARSTERN cruise ARK-XXIII/3, 2008-09-02 19:40 to 22:25. https://doi.org/10.1594/PANGAEA.810441
  6. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Multibeam survey (latitude, longitude, depth) from POLARSTERN cruise ARK-XXIII/3, 2008-09-08 02:10 to 03:15. https://doi.org/10.1594/PANGAEA.810442
  7. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Profile of sediment echo sounding during POLARSTERN cruise ARK-XXIII/3, 2009-09-02, with links to ParaSound data files. https://doi.org/10.1594/PANGAEA.810963
  8. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Profile of sediment echo sounding during POLARSTERN cruise ARK-XXIII/3, 2009-09-08, with links to ParaSound data files. https://doi.org/10.1594/PANGAEA.810965
  9. Niessen, F; Hong, JK; Hegewald, A et al. (2013): Profile of sediment echo sounding during POLARSTERN cruise ARK-XXIII/3, 2009-09-13, with links to ParaSound data files. https://doi.org/10.1594/PANGAEA.810966