Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges
This paper reviews current knowledge of sedimentation patterns in the Arctic Ocean during the pronounced climatic cycles of the last several hundred thousand years, an especially relevant time period that provides long-term context for present climate change. The review is largely based on data coll...
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ftdoajarticles:oai:doaj.org/article:bdd35c98f8b24ee981acc910e64b49de 2023-05-15T14:35:07+02:00 Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges Leonid Polyak Martin Jakobsson 2011-09-01T00:00:00Z https://doaj.org/article/bdd35c98f8b24ee981acc910e64b49de EN eng The Oceanography Society http://tos.org/oceanography/archive/24-3_polyak.pdf https://doaj.org/toc/1042-8275 1042-8275 https://doaj.org/article/bdd35c98f8b24ee981acc910e64b49de Oceanography, Vol 24, Iss 3, Pp 52-64 (2011) Arctic Ocean International Polar Year IPY quaternary sedimentation HOTRAX LOMROG Oceanography GC1-1581 article 2011 ftdoajarticles 2022-12-31T05:51:28Z This paper reviews current knowledge of sedimentation patterns in the Arctic Ocean during the pronounced climatic cycles of the last several hundred thousand years, an especially relevant time period that provides long-term context for present climate change. The review is largely based on data collected during recent research icebreaker cruises to the Arctic Ocean, with a focus on the 2005 Healy-Oden TransArctic Expedition (HOTRAX) and 2007 Lomonosov Ridge Off Greenland (LOMROG) expedition. The sediment cores and geophysical seafloor mapping data collected enable reconstruction of past oceanic environments. Evaluation of these data suggests that the two major Arctic Ocean circulation systems, the Trans-Polar Drift and the Beaufort Gyre, persisted throughout most of the Late to Middle Quaternary, approximately the last 0.5 to 0.7 million years. Extreme conditions, nonanalogous to modern environments, also occurred in the past, especially during Pleistocene glacial intervals. Some of these intervals likely featured much thickened and/or concentrated sea ice and incursions of ice shelves and armadas of megasized icebergs from the margins to the center of the Arctic Ocean. In contrast, much warmer conditions with reduced sea ice extent existed during interglacial periods. Characterization of ice conditions during these intervals is critical for evaluating the present and projected future reduction of Arctic sea ice. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Greenland Ice Shelves Iceberg* International Polar Year IPY Lomonosov Ridge oden Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Greenland |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Ocean International Polar Year IPY quaternary sedimentation HOTRAX LOMROG Oceanography GC1-1581 |
spellingShingle |
Arctic Ocean International Polar Year IPY quaternary sedimentation HOTRAX LOMROG Oceanography GC1-1581 Leonid Polyak Martin Jakobsson Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
topic_facet |
Arctic Ocean International Polar Year IPY quaternary sedimentation HOTRAX LOMROG Oceanography GC1-1581 |
description |
This paper reviews current knowledge of sedimentation patterns in the Arctic Ocean during the pronounced climatic cycles of the last several hundred thousand years, an especially relevant time period that provides long-term context for present climate change. The review is largely based on data collected during recent research icebreaker cruises to the Arctic Ocean, with a focus on the 2005 Healy-Oden TransArctic Expedition (HOTRAX) and 2007 Lomonosov Ridge Off Greenland (LOMROG) expedition. The sediment cores and geophysical seafloor mapping data collected enable reconstruction of past oceanic environments. Evaluation of these data suggests that the two major Arctic Ocean circulation systems, the Trans-Polar Drift and the Beaufort Gyre, persisted throughout most of the Late to Middle Quaternary, approximately the last 0.5 to 0.7 million years. Extreme conditions, nonanalogous to modern environments, also occurred in the past, especially during Pleistocene glacial intervals. Some of these intervals likely featured much thickened and/or concentrated sea ice and incursions of ice shelves and armadas of megasized icebergs from the margins to the center of the Arctic Ocean. In contrast, much warmer conditions with reduced sea ice extent existed during interglacial periods. Characterization of ice conditions during these intervals is critical for evaluating the present and projected future reduction of Arctic sea ice. |
format |
Article in Journal/Newspaper |
author |
Leonid Polyak Martin Jakobsson |
author_facet |
Leonid Polyak Martin Jakobsson |
author_sort |
Leonid Polyak |
title |
Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
title_short |
Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
title_full |
Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
title_fullStr |
Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
title_full_unstemmed |
Quaternary Sedimentation in the Arctic Ocean: Recent Advances and Further Challenges |
title_sort |
quaternary sedimentation in the arctic ocean: recent advances and further challenges |
publisher |
The Oceanography Society |
publishDate |
2011 |
url |
https://doaj.org/article/bdd35c98f8b24ee981acc910e64b49de |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Climate change Greenland Ice Shelves Iceberg* International Polar Year IPY Lomonosov Ridge oden Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change Greenland Ice Shelves Iceberg* International Polar Year IPY Lomonosov Ridge oden Sea ice |
op_source |
Oceanography, Vol 24, Iss 3, Pp 52-64 (2011) |
op_relation |
http://tos.org/oceanography/archive/24-3_polyak.pdf https://doaj.org/toc/1042-8275 1042-8275 https://doaj.org/article/bdd35c98f8b24ee981acc910e64b49de |
_version_ |
1766307998167203840 |