Parasound profiles and multibeam surveys in the Arctic Ocean
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...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.810972 2024-05-19T07:27:46+00:00 Parasound profiles and multibeam surveys in the Arctic Ocean 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 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 2013 application/zip, 9 datasets https://doi.pangaea.de/10.1594/PANGAEA.810972 https://doi.org/10.1594/PANGAEA.810972 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.810972 https://doi.org/10.1594/PANGAEA.810972 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: 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): Repeated Pleistocene glaciation of the East Siberian continental margin. Nature Geoscience, 6, 842-846, https://doi.org/10.1038/ngeo1904 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.81097210.1038/ngeo1904 2024-04-30T23:34:34Z 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. Dataset albedo Arctic Arctic Ocean Greenland Ice Shelves Iceberg* Tundra Siberia PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(172.961992,-176.762835,78.051200,75.485356) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI 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 Parasound profiles and multibeam surveys in the Arctic Ocean |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
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. |
format |
Dataset |
author |
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 |
author_facet |
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 |
author_sort |
Niessen, Frank |
title |
Parasound profiles and multibeam surveys in the Arctic Ocean |
title_short |
Parasound profiles and multibeam surveys in the Arctic Ocean |
title_full |
Parasound profiles and multibeam surveys in the Arctic Ocean |
title_fullStr |
Parasound profiles and multibeam surveys in the Arctic Ocean |
title_full_unstemmed |
Parasound profiles and multibeam surveys in the Arctic Ocean |
title_sort |
parasound profiles and multibeam surveys in the arctic ocean |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.810972 https://doi.org/10.1594/PANGAEA.810972 |
op_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 |
long_lat |
ENVELOPE(172.961992,-176.762835,78.051200,75.485356) |
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 |
Supplement to: 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): Repeated Pleistocene glaciation of the East Siberian continental margin. Nature Geoscience, 6, 842-846, https://doi.org/10.1038/ngeo1904 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.810972 https://doi.org/10.1594/PANGAEA.810972 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.81097210.1038/ngeo1904 |
_version_ |
1799468978950635520 |