Repeated Pleistocene glaciation of the East Siberian continental margin
During the Pleistocene glaciations, Arctic ice sheets onwestern Eurasia, Greenland and North America terminated at their continental margins1–4. In contrast, the exposed continental shelves in the Beringian region of Siberia are thought to have been covered by a tundra landscape5–7. Evidence of grou...
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ftawi:oai:epic.awi.de:34047 2023-05-15T13:11:23+02:00 Repeated Pleistocene glaciation of the East Siberian continental margin Niessen, Frank Hong, Jong Kuk Hegewald, Anne Matthiessen, Jens Stein, Rüdiger Kim, Hyoungjun Kim, Sookwan Jensen, Laura Jokat, Wilfried Nam, Seung-Il Kang, Sung-Ho 2013-10-27 https://epic.awi.de/id/eprint/34047/ https://doi.org/10.1038/NGEO1904 https://hdl.handle.net/10013/epic.42402 unknown Macmillan Niessen, F. orcid:0000-0001-6453-0594 , Hong, J. K. , Hegewald, A. , Matthiessen, J. orcid:0000-0002-6952-2494 , Stein, R. orcid:0000-0002-4453-9564 , Kim, H. , Kim, S. , Jensen, L. , Jokat, W. orcid:0000-0002-7793-5854 , Nam, S. I. and Kang, S. H. (2013) Repeated Pleistocene glaciation of the East Siberian continental margin , Nature Geoscience, 6 (10), pp. 842-846 . doi:10.1038/NGEO1904 <https://doi.org/10.1038/NGEO1904> , hdl:10013/epic.42402 EPIC3Nature Geoscience, Macmillan, 6(10), pp. 842-846, ISSN: 1752-0894 Article isiRev 2013 ftawi https://doi.org/10.1038/NGEO1904 2021-12-24T15:39:01Z During the Pleistocene glaciations, Arctic ice sheets onwestern Eurasia, Greenland and North America terminated at their continental margins1–4. In contrast, the exposed continental shelves in the Beringian region of Siberia are thought to have been covered by a tundra landscape5–7. 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 maxima8–12. 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. Article in Journal/Newspaper albedo Arctic Arctic Ocean Greenland Ice Shelves Iceberg* Tundra Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Greenland Nature Geoscience 6 10 842 846 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
During the Pleistocene glaciations, Arctic ice sheets onwestern Eurasia, Greenland and North America terminated at their continental margins1–4. In contrast, the exposed continental shelves in the Beringian region of Siberia are thought to have been covered by a tundra landscape5–7. 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 maxima8–12. 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. |
format |
Article in Journal/Newspaper |
author |
Niessen, Frank Hong, Jong Kuk Hegewald, Anne Matthiessen, Jens Stein, Rüdiger Kim, Hyoungjun Kim, Sookwan Jensen, Laura Jokat, Wilfried Nam, Seung-Il Kang, Sung-Ho |
spellingShingle |
Niessen, Frank Hong, Jong Kuk Hegewald, Anne Matthiessen, Jens Stein, Rüdiger Kim, Hyoungjun Kim, Sookwan Jensen, Laura Jokat, Wilfried Nam, Seung-Il Kang, Sung-Ho Repeated Pleistocene glaciation of the East Siberian continental margin |
author_facet |
Niessen, Frank Hong, Jong Kuk Hegewald, Anne Matthiessen, Jens Stein, Rüdiger Kim, Hyoungjun Kim, Sookwan Jensen, Laura Jokat, Wilfried Nam, Seung-Il Kang, Sung-Ho |
author_sort |
Niessen, Frank |
title |
Repeated Pleistocene glaciation of the East Siberian continental margin |
title_short |
Repeated Pleistocene glaciation of the East Siberian continental margin |
title_full |
Repeated Pleistocene glaciation of the East Siberian continental margin |
title_fullStr |
Repeated Pleistocene glaciation of the East Siberian continental margin |
title_full_unstemmed |
Repeated Pleistocene glaciation of the East Siberian continental margin |
title_sort |
repeated pleistocene glaciation of the east siberian continental margin |
publisher |
Macmillan |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/34047/ https://doi.org/10.1038/NGEO1904 https://hdl.handle.net/10013/epic.42402 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
albedo Arctic Arctic Ocean Greenland Ice Shelves Iceberg* Tundra Siberia |
genre_facet |
albedo Arctic Arctic Ocean Greenland Ice Shelves Iceberg* Tundra Siberia |
op_source |
EPIC3Nature Geoscience, Macmillan, 6(10), pp. 842-846, ISSN: 1752-0894 |
op_relation |
Niessen, F. orcid:0000-0001-6453-0594 , Hong, J. K. , Hegewald, A. , Matthiessen, J. orcid:0000-0002-6952-2494 , Stein, R. orcid:0000-0002-4453-9564 , Kim, H. , Kim, S. , Jensen, L. , Jokat, W. orcid:0000-0002-7793-5854 , Nam, S. I. and Kang, S. H. (2013) Repeated Pleistocene glaciation of the East Siberian continental margin , Nature Geoscience, 6 (10), pp. 842-846 . doi:10.1038/NGEO1904 <https://doi.org/10.1038/NGEO1904> , hdl:10013/epic.42402 |
op_doi |
https://doi.org/10.1038/NGEO1904 |
container_title |
Nature Geoscience |
container_volume |
6 |
container_issue |
10 |
container_start_page |
842 |
op_container_end_page |
846 |
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1766247207875379200 |