Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation
Abstract Unravelling past, large-scale ocean circulation patterns is crucial for deciphering the long-term global paleoclimate. Here we apply numerical modelling to reconstruct the detailed paleobathymetry-topography of the southwestern inlet of the Barents Seaway that presently connects the Atlanti...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-06-01
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| Series: | Communications Earth & Environment |
| Online Access: | https://doi.org/10.1038/s43247-023-00899-y |
| _version_ | 1797789602309734400 |
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| author | Amando P. E. Lasabuda Alfred Hanssen Jan Sverre Laberg Jan Inge Faleide Henry Patton Mansour M. Abdelmalak Tom Arne Rydningen Bent Kjølhamar |
| author_facet | Amando P. E. Lasabuda Alfred Hanssen Jan Sverre Laberg Jan Inge Faleide Henry Patton Mansour M. Abdelmalak Tom Arne Rydningen Bent Kjølhamar |
| author_sort | Amando P. E. Lasabuda |
| collection | DOAJ |
| description | Abstract Unravelling past, large-scale ocean circulation patterns is crucial for deciphering the long-term global paleoclimate. Here we apply numerical modelling to reconstruct the detailed paleobathymetry-topography of the southwestern inlet of the Barents Seaway that presently connects the Atlantic and Arctic oceans. Subaerial topography was likely enough to block Atlantic Water from entering the Barents Seaway in the earliest Eocene (c. 55 Ma). The water may have entered in the middle Eocene (c. 47 Ma) as observed from major basin subsidence, but paleotopographic highs to the east may have hindered connections between the two oceans. From the Oligocene (c. 33 Ma) until the onset of the Quaternary (c. 2.7 Ma), basin shallowing and regional shelf uplift blocked Atlantic Water from entering the Barents Seaway. Our results imply that the Fram Strait remained the sole gateway for Atlantic Water into the Arctic Ocean since its opening in the Miocene until the Quaternary. |
| first_indexed | 2024-03-13T01:53:00Z |
| format | Article |
| id | doaj.art-e93fd99ae976434d8dd666091f9b4373 |
| institution | Directory Open Access Journal |
| issn | 2662-4435 |
| language | English |
| last_indexed | 2024-03-13T01:53:00Z |
| publishDate | 2023-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Earth & Environment |
| spelling | doaj.art-e93fd99ae976434d8dd666091f9b43732023-07-02T11:27:39ZengNature PortfolioCommunications Earth & Environment2662-44352023-06-014111710.1038/s43247-023-00899-yPaleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulationAmando P. E. Lasabuda0Alfred Hanssen1Jan Sverre Laberg2Jan Inge Faleide3Henry Patton4Mansour M. Abdelmalak5Tom Arne Rydningen6Bent Kjølhamar7Department of Geosciences, UiT The Arctic University of NorwayDepartment of Geosciences, UiT The Arctic University of NorwayDepartment of Geosciences, UiT The Arctic University of NorwayDepartment of Geosciences, University of OsloCAGE—Centre for Arctic Gas Hydrate, Environment and Climate, Department of Geosciences, UiT The Arctic University of NorwayDepartment of Geosciences, University of OsloDepartment of Geosciences, UiT The Arctic University of NorwayTGSAbstract Unravelling past, large-scale ocean circulation patterns is crucial for deciphering the long-term global paleoclimate. Here we apply numerical modelling to reconstruct the detailed paleobathymetry-topography of the southwestern inlet of the Barents Seaway that presently connects the Atlantic and Arctic oceans. Subaerial topography was likely enough to block Atlantic Water from entering the Barents Seaway in the earliest Eocene (c. 55 Ma). The water may have entered in the middle Eocene (c. 47 Ma) as observed from major basin subsidence, but paleotopographic highs to the east may have hindered connections between the two oceans. From the Oligocene (c. 33 Ma) until the onset of the Quaternary (c. 2.7 Ma), basin shallowing and regional shelf uplift blocked Atlantic Water from entering the Barents Seaway. Our results imply that the Fram Strait remained the sole gateway for Atlantic Water into the Arctic Ocean since its opening in the Miocene until the Quaternary.https://doi.org/10.1038/s43247-023-00899-y |
| spellingShingle | Amando P. E. Lasabuda Alfred Hanssen Jan Sverre Laberg Jan Inge Faleide Henry Patton Mansour M. Abdelmalak Tom Arne Rydningen Bent Kjølhamar Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation Communications Earth & Environment |
| title | Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation |
| title_full | Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation |
| title_fullStr | Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation |
| title_full_unstemmed | Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation |
| title_short | Paleobathymetric reconstructions of the SW Barents Seaway and their implications for Atlantic–Arctic ocean circulation |
| title_sort | paleobathymetric reconstructions of the sw barents seaway and their implications for atlantic arctic ocean circulation |
| url | https://doi.org/10.1038/s43247-023-00899-y |
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