Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway.
Funder: UiT The Arctic University of Norway (incl University Hospital of North Norway) The variability of Arctic sea-ice during abrupt stadial-interstadial shifts in the last glacial period remain poorly understood. Here, we investigated the millennial-scale relationship, with a focus on Heinrich St...
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2024
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ftunivcam:oai:www.repository.cam.ac.uk:1810/363244 2024-02-11T10:01:55+01:00 Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. El Bani Altuna, Naima Ezat, Mohamed M Smik, Lukas Muschitiello, Francesco Belt, Simon T Knies, Jochen Rasmussen, Tine L 2024-01-11T16:16:27Z application/zip text/xml application/pdf https://www.repository.cam.ac.uk/handle/1810/363244 en eng eng Springer Science and Business Media LLC http://dx.doi.org/10.1038/s41598-024-51532-7 Sci Rep https://www.repository.cam.ac.uk/handle/1810/363244 37 Earth Sciences 3708 Oceanography 3709 Physical Geography and Environmental Geoscience 14 Life Below Water Article 2024 ftunivcam 2024-01-25T23:19:25Z Funder: UiT The Arctic University of Norway (incl University Hospital of North Norway) The variability of Arctic sea-ice during abrupt stadial-interstadial shifts in the last glacial period remain poorly understood. Here, we investigated the millennial-scale relationship, with a focus on Heinrich Stadials (HS), between sea-ice cover and bottom water temperature (BWT) during Marine Isotope Stages (MIS) 3 and 2 (64-13 ka) in the Fram Strait using new molecular sea ice biomarker data and published benthic foraminiferal BWT records. Widespread spring sea-ice cover (SpSIC) dominated the studied interval, especially in mid-late MIS 3 (45-29 ka). Yet, warm interstadials were characterized by relatively more open-ocean conditions compared to cold stadials. At the transition between a HS and the subsequent interstadial, sea ice was tightly linked to BWT with rapid reductions in SpSIC coinciding with lower BWT at the end of HS. The relative timing of the events, especially during HS 1, points to ocean warming as the key controlling factor for sea ice reduction at millennial timescales. Article in Journal/Newspaper Atlantic Arctic Atlantic-Arctic Foraminifera* Fram Strait North Norway Sea ice Arctic University of Norway UiT The Arctic University of Norway Apollo - University of Cambridge Repository Arctic Norway |
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Apollo - University of Cambridge Repository |
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English |
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37 Earth Sciences 3708 Oceanography 3709 Physical Geography and Environmental Geoscience 14 Life Below Water |
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37 Earth Sciences 3708 Oceanography 3709 Physical Geography and Environmental Geoscience 14 Life Below Water El Bani Altuna, Naima Ezat, Mohamed M Smik, Lukas Muschitiello, Francesco Belt, Simon T Knies, Jochen Rasmussen, Tine L Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
topic_facet |
37 Earth Sciences 3708 Oceanography 3709 Physical Geography and Environmental Geoscience 14 Life Below Water |
description |
Funder: UiT The Arctic University of Norway (incl University Hospital of North Norway) The variability of Arctic sea-ice during abrupt stadial-interstadial shifts in the last glacial period remain poorly understood. Here, we investigated the millennial-scale relationship, with a focus on Heinrich Stadials (HS), between sea-ice cover and bottom water temperature (BWT) during Marine Isotope Stages (MIS) 3 and 2 (64-13 ka) in the Fram Strait using new molecular sea ice biomarker data and published benthic foraminiferal BWT records. Widespread spring sea-ice cover (SpSIC) dominated the studied interval, especially in mid-late MIS 3 (45-29 ka). Yet, warm interstadials were characterized by relatively more open-ocean conditions compared to cold stadials. At the transition between a HS and the subsequent interstadial, sea ice was tightly linked to BWT with rapid reductions in SpSIC coinciding with lower BWT at the end of HS. The relative timing of the events, especially during HS 1, points to ocean warming as the key controlling factor for sea ice reduction at millennial timescales. |
format |
Article in Journal/Newspaper |
author |
El Bani Altuna, Naima Ezat, Mohamed M Smik, Lukas Muschitiello, Francesco Belt, Simon T Knies, Jochen Rasmussen, Tine L |
author_facet |
El Bani Altuna, Naima Ezat, Mohamed M Smik, Lukas Muschitiello, Francesco Belt, Simon T Knies, Jochen Rasmussen, Tine L |
author_sort |
El Bani Altuna, Naima |
title |
Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
title_short |
Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
title_full |
Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
title_fullStr |
Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
title_full_unstemmed |
Sea ice-ocean coupling during Heinrich Stadials in the Atlantic-Arctic gateway. |
title_sort |
sea ice-ocean coupling during heinrich stadials in the atlantic-arctic gateway. |
publisher |
Springer Science and Business Media LLC |
publishDate |
2024 |
url |
https://www.repository.cam.ac.uk/handle/1810/363244 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Atlantic Arctic Atlantic-Arctic Foraminifera* Fram Strait North Norway Sea ice Arctic University of Norway UiT The Arctic University of Norway |
genre_facet |
Atlantic Arctic Atlantic-Arctic Foraminifera* Fram Strait North Norway Sea ice Arctic University of Norway UiT The Arctic University of Norway |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/363244 |
_version_ |
1790597800047673344 |