Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet
Contemporary climate change has resulted in great uncertainty in how glaciers and ice sheets around the Earth might evolve. It has long been appreciated that the contemporary West Antarctic Ice Sheet (WAIS) shares many similarities with the former Barents Sea Ice Sheet (BSIS). Therefore, an increasi...
Published in: | Marine Geology |
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Language: | English |
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2017
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Online Access: | https://pure.qub.ac.uk/en/publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 https://doi.org/10.1016/j.margeo.2017.04.001 https://pureadmin.qub.ac.uk/ws/files/149494435/1_s2.0_S0025322716302614_main.pdf http://www.scopus.com/inward/record.url?scp=85017610643&partnerID=8YFLogxK |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 2024-05-19T07:32:13+00:00 Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet Newton, Andrew M.W. Huuse, Mads 2017-05-01 application/pdf https://pure.qub.ac.uk/en/publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 https://doi.org/10.1016/j.margeo.2017.04.001 https://pureadmin.qub.ac.uk/ws/files/149494435/1_s2.0_S0025322716302614_main.pdf http://www.scopus.com/inward/record.url?scp=85017610643&partnerID=8YFLogxK eng eng https://pure.qub.ac.uk/en/publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 info:eu-repo/semantics/openAccess Newton , A M W & Huuse , M 2017 , ' Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet ' , Marine Geology , vol. 387 , pp. 114-131 . https://doi.org/10.1016/j.margeo.2017.04.001 Barents Sea Bathymetry Deglaciation Glacial geomorphology Ice stream Last Glacial Maximum Palaeo-glaciology /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1906 name=Geochemistry and Petrology /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2017 ftqueensubelpubl https://doi.org/10.1016/j.margeo.2017.04.001 2024-05-02T00:28:56Z Contemporary climate change has resulted in great uncertainty in how glaciers and ice sheets around the Earth might evolve. It has long been appreciated that the contemporary West Antarctic Ice Sheet (WAIS) shares many similarities with the former Barents Sea Ice Sheet (BSIS). Therefore, an increasing number of studies have sought to investigate the Barents Sea glacial record to better understand marine-based glaciation. This paper reports the analysis of a new high-resolution bathymetric survey covering ~ 55,000 km 2 in the central Barents Sea. The relative chronologies of newly-mapped glacial landforms such as mega-scale glacial lineations, grounding-zone wedges, moraines, and crevasse-squeeze ridges are used to reconstruct the ice sheet dynamics in the central Barents Sea. Our results show that the ice sheet responded dynamically with different periods of retreat, advance, and stagnation observed. These new landform records have been integrated with other geomorphological records in order to reconstruct the retreat pattern of the BSIS between 17–14 ka, when the Fennoscandian Ice Sheet is thought to have uncoupled from the BSIS. Our data shows that the dynamic drawdown of the ice sheet saddle by ice streams was probably the primary mechanism in separating the two ice sheets. After the ice sheets uncoupled, the BSIS is shown to have retreated episodically with several periods of relative stability. Geomorphological records such as those from the BSIS can be used to constrain ice sheet modelling and will help to develop a clearer understanding of marine-based glaciation and the role of ice streams in driving ice sheet evolution. Article in Journal/Newspaper Antarc* Antarctic Barents Sea Fennoscandian Ice Sheet Sea ice Queen's University Belfast Research Portal Marine Geology 387 114 131 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Barents Sea Bathymetry Deglaciation Glacial geomorphology Ice stream Last Glacial Maximum Palaeo-glaciology /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1906 name=Geochemistry and Petrology /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Barents Sea Bathymetry Deglaciation Glacial geomorphology Ice stream Last Glacial Maximum Palaeo-glaciology /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1906 name=Geochemistry and Petrology /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Newton, Andrew M.W. Huuse, Mads Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
topic_facet |
Barents Sea Bathymetry Deglaciation Glacial geomorphology Ice stream Last Glacial Maximum Palaeo-glaciology /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1906 name=Geochemistry and Petrology /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Contemporary climate change has resulted in great uncertainty in how glaciers and ice sheets around the Earth might evolve. It has long been appreciated that the contemporary West Antarctic Ice Sheet (WAIS) shares many similarities with the former Barents Sea Ice Sheet (BSIS). Therefore, an increasing number of studies have sought to investigate the Barents Sea glacial record to better understand marine-based glaciation. This paper reports the analysis of a new high-resolution bathymetric survey covering ~ 55,000 km 2 in the central Barents Sea. The relative chronologies of newly-mapped glacial landforms such as mega-scale glacial lineations, grounding-zone wedges, moraines, and crevasse-squeeze ridges are used to reconstruct the ice sheet dynamics in the central Barents Sea. Our results show that the ice sheet responded dynamically with different periods of retreat, advance, and stagnation observed. These new landform records have been integrated with other geomorphological records in order to reconstruct the retreat pattern of the BSIS between 17–14 ka, when the Fennoscandian Ice Sheet is thought to have uncoupled from the BSIS. Our data shows that the dynamic drawdown of the ice sheet saddle by ice streams was probably the primary mechanism in separating the two ice sheets. After the ice sheets uncoupled, the BSIS is shown to have retreated episodically with several periods of relative stability. Geomorphological records such as those from the BSIS can be used to constrain ice sheet modelling and will help to develop a clearer understanding of marine-based glaciation and the role of ice streams in driving ice sheet evolution. |
format |
Article in Journal/Newspaper |
author |
Newton, Andrew M.W. Huuse, Mads |
author_facet |
Newton, Andrew M.W. Huuse, Mads |
author_sort |
Newton, Andrew M.W. |
title |
Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
title_short |
Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
title_full |
Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
title_fullStr |
Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
title_full_unstemmed |
Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet |
title_sort |
glacial geomorphology of the central barents sea implications for the dynamic deglaciation of the barents sea ice sheet |
publishDate |
2017 |
url |
https://pure.qub.ac.uk/en/publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 https://doi.org/10.1016/j.margeo.2017.04.001 https://pureadmin.qub.ac.uk/ws/files/149494435/1_s2.0_S0025322716302614_main.pdf http://www.scopus.com/inward/record.url?scp=85017610643&partnerID=8YFLogxK |
genre |
Antarc* Antarctic Barents Sea Fennoscandian Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Barents Sea Fennoscandian Ice Sheet Sea ice |
op_source |
Newton , A M W & Huuse , M 2017 , ' Glacial geomorphology of the central Barents Sea Implications for the dynamic deglaciation of the Barents Sea Ice Sheet ' , Marine Geology , vol. 387 , pp. 114-131 . https://doi.org/10.1016/j.margeo.2017.04.001 |
op_relation |
https://pure.qub.ac.uk/en/publications/b766b1a7-79c2-4f0b-8270-4ab1c32890e1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2017.04.001 |
container_title |
Marine Geology |
container_volume |
387 |
container_start_page |
114 |
op_container_end_page |
131 |
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1799470209245904896 |