Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records
The Yermak Plateau is located north of Svalbard at the entrance to the Arctic Ocean, i.e. in an area highly sensitive to climate change. A multi proxy approach was carried out on Core PS92/039-2 to study glacial-interglacial environmental changes at the northern Barents Sea margin during the last 16...
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Online Access: | https://epic.awi.de/id/eprint/48148/ https://hdl.handle.net/10013/epic.939c51ee-e2e5-4a0c-b210-fb1162aebba4 |
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ftawi:oai:epic.awi.de:48148 2024-09-15T17:53:54+00:00 Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records Kremer, Anne Stein, Rüdiger Fahl, Kirsten Yang, Z Ji, Z Wiers, S Matthiessen, Jens Forwick, M Löwemark, L O'Regan, M Chen, J Snowball, I 2018-02-15 https://epic.awi.de/id/eprint/48148/ https://hdl.handle.net/10013/epic.939c51ee-e2e5-4a0c-b210-fb1162aebba4 unknown PERGAMON-ELSEVIER SCIENCE LTD Kremer, A. , Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 , Yang, Z. , Ji, Z. , Wiers, S. , Matthiessen, J. orcid:0000-0002-6952-2494 , Forwick, M. , Löwemark, L. , O'Regan, M. , Chen, J. and Snowball, I. (2018) Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records , Quaternary Science Reviews, 182 , pp. 93-108 . doi:10.1016/j.quascirev.2017.12.016 <https://doi.org/10.1016/j.quascirev.2017.12.016> , hdl:10013/epic.939c51ee-e2e5-4a0c-b210-fb1162aebba4 EPIC3Quaternary Science Reviews, PERGAMON-ELSEVIER SCIENCE LTD, 182, pp. 93-108, ISSN: 0277-3791 Article isiRev 2018 ftawi https://doi.org/10.1016/j.quascirev.2017.12.016 2024-06-24T04:21:00Z The Yermak Plateau is located north of Svalbard at the entrance to the Arctic Ocean, i.e. in an area highly sensitive to climate change. A multi proxy approach was carried out on Core PS92/039-2 to study glacial-interglacial environmental changes at the northern Barents Sea margin during the last 160 ka. The main emphasis was on the reconstruction of sea ice cover, based on the sea ice proxy IP25 and the related phytoplankton - sea ice index PIP25. Sea ice was present most of the time but showed significant temporal variability decisively affected by movements of the Svalbard Barents Sea Ice Sheet. For the first time, we prove the occurrence of seasonal sea ice at the eastern Yermak Plateau during glacial intervals, probably steered by a major northward advance of the ice sheet and the formation of a coastal polynya in front of it. Maximum accumulation of terrigenous organic carbon, IP25 and the phytoplankton biomarkers (brassicasterol, dinosterol, HBI III) can be correlated to distinct deglaciation events. More severe, but variable sea ice cover prevailed at the Yermak Plateau during interglacials. The general proximity to the sea ice margin is further indicated by biomarker (GDGT) - based sea surface temperatures below 2.5 °C. Article in Journal/Newspaper Arctic Ocean Barents Sea Climate change Ice Sheet Phytoplankton Sea ice Svalbard Svalbard-Barents Sea Ice sheet Yermak plateau Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Quaternary Science Reviews 182 93 108 |
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 |
The Yermak Plateau is located north of Svalbard at the entrance to the Arctic Ocean, i.e. in an area highly sensitive to climate change. A multi proxy approach was carried out on Core PS92/039-2 to study glacial-interglacial environmental changes at the northern Barents Sea margin during the last 160 ka. The main emphasis was on the reconstruction of sea ice cover, based on the sea ice proxy IP25 and the related phytoplankton - sea ice index PIP25. Sea ice was present most of the time but showed significant temporal variability decisively affected by movements of the Svalbard Barents Sea Ice Sheet. For the first time, we prove the occurrence of seasonal sea ice at the eastern Yermak Plateau during glacial intervals, probably steered by a major northward advance of the ice sheet and the formation of a coastal polynya in front of it. Maximum accumulation of terrigenous organic carbon, IP25 and the phytoplankton biomarkers (brassicasterol, dinosterol, HBI III) can be correlated to distinct deglaciation events. More severe, but variable sea ice cover prevailed at the Yermak Plateau during interglacials. The general proximity to the sea ice margin is further indicated by biomarker (GDGT) - based sea surface temperatures below 2.5 °C. |
format |
Article in Journal/Newspaper |
author |
Kremer, Anne Stein, Rüdiger Fahl, Kirsten Yang, Z Ji, Z Wiers, S Matthiessen, Jens Forwick, M Löwemark, L O'Regan, M Chen, J Snowball, I |
spellingShingle |
Kremer, Anne Stein, Rüdiger Fahl, Kirsten Yang, Z Ji, Z Wiers, S Matthiessen, Jens Forwick, M Löwemark, L O'Regan, M Chen, J Snowball, I Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
author_facet |
Kremer, Anne Stein, Rüdiger Fahl, Kirsten Yang, Z Ji, Z Wiers, S Matthiessen, Jens Forwick, M Löwemark, L O'Regan, M Chen, J Snowball, I |
author_sort |
Kremer, Anne |
title |
Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
title_short |
Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
title_full |
Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
title_fullStr |
Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
title_full_unstemmed |
Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records |
title_sort |
changes in sea ice cover and ice sheet extent at the yermak plateau during the last 160 ka – reconstructions from biomarker records |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/48148/ https://hdl.handle.net/10013/epic.939c51ee-e2e5-4a0c-b210-fb1162aebba4 |
genre |
Arctic Ocean Barents Sea Climate change Ice Sheet Phytoplankton Sea ice Svalbard Svalbard-Barents Sea Ice sheet Yermak plateau |
genre_facet |
Arctic Ocean Barents Sea Climate change Ice Sheet Phytoplankton Sea ice Svalbard Svalbard-Barents Sea Ice sheet Yermak plateau |
op_source |
EPIC3Quaternary Science Reviews, PERGAMON-ELSEVIER SCIENCE LTD, 182, pp. 93-108, ISSN: 0277-3791 |
op_relation |
Kremer, A. , Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 , Yang, Z. , Ji, Z. , Wiers, S. , Matthiessen, J. orcid:0000-0002-6952-2494 , Forwick, M. , Löwemark, L. , O'Regan, M. , Chen, J. and Snowball, I. (2018) Changes in sea ice cover and ice sheet extent at the Yermak Plateau during the last 160 ka – Reconstructions from biomarker records , Quaternary Science Reviews, 182 , pp. 93-108 . doi:10.1016/j.quascirev.2017.12.016 <https://doi.org/10.1016/j.quascirev.2017.12.016> , hdl:10013/epic.939c51ee-e2e5-4a0c-b210-fb1162aebba4 |
op_doi |
https://doi.org/10.1016/j.quascirev.2017.12.016 |
container_title |
Quaternary Science Reviews |
container_volume |
182 |
container_start_page |
93 |
op_container_end_page |
108 |
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1810430024341258240 |