A persistent Norwegian Atlantic Current through the Pleistocene glacials
Changes in ocean‐circulation regimes in the northern North Atlantic and the Nordic Seas may affect not only the Arctic but potentially hemispheric or even global climate. Therefore, unraveling the long‐term evolution of the North Atlantic Current‐Norwegian Atlantic Current system through the Pleisto...
Published in: | Geophysical Research Letters |
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Online Access: | https://pure.qub.ac.uk/en/publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 https://doi.org/10.1029/2018GL077819 https://pureadmin.qub.ac.uk/ws/files/153973669/A_persistent_Norwegian_Atlantic_Current_through_the_Pleistocene_glacials.pdf |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 2024-05-19T07:36:17+00:00 A persistent Norwegian Atlantic Current through the Pleistocene glacials Newton, A. M. W. Huuse, M. Brocklehurst, S. H. 2018-05-18 application/pdf https://pure.qub.ac.uk/en/publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 https://doi.org/10.1029/2018GL077819 https://pureadmin.qub.ac.uk/ws/files/153973669/A_persistent_Norwegian_Atlantic_Current_through_the_Pleistocene_glacials.pdf eng eng https://pure.qub.ac.uk/en/publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 info:eu-repo/semantics/openAccess Newton , A M W , Huuse , M & Brocklehurst , S H 2018 , ' A persistent Norwegian Atlantic Current through the Pleistocene glacials ' , Geophysical Research Letters . https://doi.org/10.1029/2018GL077819 3D Seismic Reflection Iceberg Scours Mid‐Norwegian Margin North Atlantic Current North Atlantic Deep Water Norwegian Atlantic Current Seismic Geomorphology article 2018 ftqueensubelpubl https://doi.org/10.1029/2018GL077819 2024-05-02T00:28:56Z Changes in ocean‐circulation regimes in the northern North Atlantic and the Nordic Seas may affect not only the Arctic but potentially hemispheric or even global climate. Therefore, unraveling the long‐term evolution of the North Atlantic Current‐Norwegian Atlantic Current system through the Pleistocene glaciations could yield useful information and climatological context for understanding contemporary changes. In this work, ~50,000 km2 of 3‐D seismic reflection data are used to investigate the Pleistocene stratigraphy for evidence of paleo‐oceanographic regimes on the mid‐Norwegian margin since 2.58 Ma. Across 33 semicontinuous regional paleo‐seafloor surfaces ~17,500 iceberg scours have been mapped. This mapping greatly expands our spatiotemporal understanding of currents and iceberg presence in the eastern Nordic Seas. The scours display a dominant southwest‐northeast trend that complements previous sedimentological and numerical modeling studies that suggest northward‐flowing currents in the Norwegian Sea during the Pleistocene. This paleo‐oceanographic study suggests that through many of the Pleistocene glaciations, the location of surface ocean currents in the Norwegian Sea and, by extension, the eastern North Atlantic, were broadly similar to the present. Article in Journal/Newspaper Arctic Iceberg* Nordic Seas north atlantic current North Atlantic Deep Water North Atlantic Norwegian Sea Queen's University Belfast Research Portal Geophysical Research Letters 45 11 5599 5608 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
3D Seismic Reflection Iceberg Scours Mid‐Norwegian Margin North Atlantic Current North Atlantic Deep Water Norwegian Atlantic Current Seismic Geomorphology |
spellingShingle |
3D Seismic Reflection Iceberg Scours Mid‐Norwegian Margin North Atlantic Current North Atlantic Deep Water Norwegian Atlantic Current Seismic Geomorphology Newton, A. M. W. Huuse, M. Brocklehurst, S. H. A persistent Norwegian Atlantic Current through the Pleistocene glacials |
topic_facet |
3D Seismic Reflection Iceberg Scours Mid‐Norwegian Margin North Atlantic Current North Atlantic Deep Water Norwegian Atlantic Current Seismic Geomorphology |
description |
Changes in ocean‐circulation regimes in the northern North Atlantic and the Nordic Seas may affect not only the Arctic but potentially hemispheric or even global climate. Therefore, unraveling the long‐term evolution of the North Atlantic Current‐Norwegian Atlantic Current system through the Pleistocene glaciations could yield useful information and climatological context for understanding contemporary changes. In this work, ~50,000 km2 of 3‐D seismic reflection data are used to investigate the Pleistocene stratigraphy for evidence of paleo‐oceanographic regimes on the mid‐Norwegian margin since 2.58 Ma. Across 33 semicontinuous regional paleo‐seafloor surfaces ~17,500 iceberg scours have been mapped. This mapping greatly expands our spatiotemporal understanding of currents and iceberg presence in the eastern Nordic Seas. The scours display a dominant southwest‐northeast trend that complements previous sedimentological and numerical modeling studies that suggest northward‐flowing currents in the Norwegian Sea during the Pleistocene. This paleo‐oceanographic study suggests that through many of the Pleistocene glaciations, the location of surface ocean currents in the Norwegian Sea and, by extension, the eastern North Atlantic, were broadly similar to the present. |
format |
Article in Journal/Newspaper |
author |
Newton, A. M. W. Huuse, M. Brocklehurst, S. H. |
author_facet |
Newton, A. M. W. Huuse, M. Brocklehurst, S. H. |
author_sort |
Newton, A. M. W. |
title |
A persistent Norwegian Atlantic Current through the Pleistocene glacials |
title_short |
A persistent Norwegian Atlantic Current through the Pleistocene glacials |
title_full |
A persistent Norwegian Atlantic Current through the Pleistocene glacials |
title_fullStr |
A persistent Norwegian Atlantic Current through the Pleistocene glacials |
title_full_unstemmed |
A persistent Norwegian Atlantic Current through the Pleistocene glacials |
title_sort |
persistent norwegian atlantic current through the pleistocene glacials |
publishDate |
2018 |
url |
https://pure.qub.ac.uk/en/publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 https://doi.org/10.1029/2018GL077819 https://pureadmin.qub.ac.uk/ws/files/153973669/A_persistent_Norwegian_Atlantic_Current_through_the_Pleistocene_glacials.pdf |
genre |
Arctic Iceberg* Nordic Seas north atlantic current North Atlantic Deep Water North Atlantic Norwegian Sea |
genre_facet |
Arctic Iceberg* Nordic Seas north atlantic current North Atlantic Deep Water North Atlantic Norwegian Sea |
op_source |
Newton , A M W , Huuse , M & Brocklehurst , S H 2018 , ' A persistent Norwegian Atlantic Current through the Pleistocene glacials ' , Geophysical Research Letters . https://doi.org/10.1029/2018GL077819 |
op_relation |
https://pure.qub.ac.uk/en/publications/fc83d5d2-51a2-4f7b-8148-c6f2c1eae048 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2018GL077819 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
11 |
container_start_page |
5599 |
op_container_end_page |
5608 |
_version_ |
1799475396668817408 |