Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea
The Barents Sea Ice Sheet (BSIS) is a good palaeo-analogue for the present day West Antarctic Ice Sheet. Both were marine-based ice sheets, particularly vulnerable to ocean warming and sea-level rise. Understanding the BSIS ice dynamics and patterns of retreat since the Last Glacial Maximum (LGM) is...
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Online Access: | https://hdl.handle.net/10037/13337 https://doi.org/10.1016/j.quascirev.2017.06.004 |
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ftunivtroemsoe:oai:munin.uit.no:10037/13337 2023-05-15T13:52:48+02:00 Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea Esteves, Mariana da Silveira Ramos Bjarnadóttir, Lilja Rún Winsborrow, Monica Shackleton, Calvin Andreassen, Karin 2017-06-26 https://hdl.handle.net/10037/13337 https://doi.org/10.1016/j.quascirev.2017.06.004 eng eng Elsevier Esteves, M. (2018). Collapse of a marine-based ice sheet. (Doctoral thesis). https://hdl.handle.net/10037/21256 . Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Esteves, M.D.S.R., Bjarnadóttir, L.R., Winsborrow, M., Shackleton, C. & Andreassen, K. (2017). Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea. Quaternary Science Reviews, 169, 131-147. https://doi.org/10.1016/j.quascirev.2017.06.004 FRIDAID 1480897 doi:10.1016/j.quascirev.2017.06.004 0277-3791 1873-457X https://hdl.handle.net/10037/13337 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Late quaternary Deglaciation Barents Sea Ice Sheet Glacial geomorphology Sentralbankrenna palaeo-ice stream GZW MSGL Marine-based ice sheet Ice stream reconstruction Glacial dynamics Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.1016/j.quascirev.2017.06.004 2021-06-25T17:55:53Z The Barents Sea Ice Sheet (BSIS) is a good palaeo-analogue for the present day West Antarctic Ice Sheet. Both were marine-based ice sheets, particularly vulnerable to ocean warming and sea-level rise. Understanding the BSIS ice dynamics and patterns of retreat since the Last Glacial Maximum (LGM) is useful in developing our knowledge of spatial and temporal variations during marine-based ice sheet retreat. While the western margins of the Barents Sea have been extensively studied, few studies have focused on the central regions, which hosted key ice stream tributaries and major ice domes and divides. Presenting a new high-resolution (5 m) bathymetric dataset, this glacial geomorphological study focuses on the Sentralbankrenna palaeo-glacial system in the central Barents Sea. A large number of grounding zone wedges, mega-scale glacial lineations and areas with tunnel valleys and palaeo-subglacial basins were identified. These form the basis for a six-stage reconstruction of ice stream retreat through deglaciation since the LGM. In reconstructing the retreat of the Sentralbankrenna Ice Stream, we document the rapid but highly spatially variable pattern of retreat of a marine-based ice sheet margin. The presence of several tunnel valleys and interconnected palaeo-subglacial basin systems indicates an abundance of meltwater, likely to have been stored and released through several discharge events, significantly influencing the ice stream margin dynamics. This study provides insight into the behaviour and dynamics of ice during the late stages of the BSIS deglaciation within the central Barents Sea, increasing our understanding of grounding line processes. Article in Journal/Newspaper Antarc* Antarctic Arctic Barents Sea Ice Sheet Sea ice University of Tromsø: Munin Open Research Archive Antarctic Barents Sea West Antarctic Ice Sheet Quaternary Science Reviews 169 131 147 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Late quaternary Deglaciation Barents Sea Ice Sheet Glacial geomorphology Sentralbankrenna palaeo-ice stream GZW MSGL Marine-based ice sheet Ice stream reconstruction Glacial dynamics |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Late quaternary Deglaciation Barents Sea Ice Sheet Glacial geomorphology Sentralbankrenna palaeo-ice stream GZW MSGL Marine-based ice sheet Ice stream reconstruction Glacial dynamics Esteves, Mariana da Silveira Ramos Bjarnadóttir, Lilja Rún Winsborrow, Monica Shackleton, Calvin Andreassen, Karin Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Late quaternary Deglaciation Barents Sea Ice Sheet Glacial geomorphology Sentralbankrenna palaeo-ice stream GZW MSGL Marine-based ice sheet Ice stream reconstruction Glacial dynamics |
description |
The Barents Sea Ice Sheet (BSIS) is a good palaeo-analogue for the present day West Antarctic Ice Sheet. Both were marine-based ice sheets, particularly vulnerable to ocean warming and sea-level rise. Understanding the BSIS ice dynamics and patterns of retreat since the Last Glacial Maximum (LGM) is useful in developing our knowledge of spatial and temporal variations during marine-based ice sheet retreat. While the western margins of the Barents Sea have been extensively studied, few studies have focused on the central regions, which hosted key ice stream tributaries and major ice domes and divides. Presenting a new high-resolution (5 m) bathymetric dataset, this glacial geomorphological study focuses on the Sentralbankrenna palaeo-glacial system in the central Barents Sea. A large number of grounding zone wedges, mega-scale glacial lineations and areas with tunnel valleys and palaeo-subglacial basins were identified. These form the basis for a six-stage reconstruction of ice stream retreat through deglaciation since the LGM. In reconstructing the retreat of the Sentralbankrenna Ice Stream, we document the rapid but highly spatially variable pattern of retreat of a marine-based ice sheet margin. The presence of several tunnel valleys and interconnected palaeo-subglacial basin systems indicates an abundance of meltwater, likely to have been stored and released through several discharge events, significantly influencing the ice stream margin dynamics. This study provides insight into the behaviour and dynamics of ice during the late stages of the BSIS deglaciation within the central Barents Sea, increasing our understanding of grounding line processes. |
format |
Article in Journal/Newspaper |
author |
Esteves, Mariana da Silveira Ramos Bjarnadóttir, Lilja Rún Winsborrow, Monica Shackleton, Calvin Andreassen, Karin |
author_facet |
Esteves, Mariana da Silveira Ramos Bjarnadóttir, Lilja Rún Winsborrow, Monica Shackleton, Calvin Andreassen, Karin |
author_sort |
Esteves, Mariana da Silveira Ramos |
title |
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
title_short |
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
title_full |
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
title_fullStr |
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
title_full_unstemmed |
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea |
title_sort |
retreat patterns and dynamics of the sentralbankrenna glacial system, central barents sea |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/13337 https://doi.org/10.1016/j.quascirev.2017.06.004 |
geographic |
Antarctic Barents Sea West Antarctic Ice Sheet |
geographic_facet |
Antarctic Barents Sea West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Arctic Barents Sea Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Arctic Barents Sea Ice Sheet Sea ice |
op_relation |
Esteves, M. (2018). Collapse of a marine-based ice sheet. (Doctoral thesis). https://hdl.handle.net/10037/21256 . Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Esteves, M.D.S.R., Bjarnadóttir, L.R., Winsborrow, M., Shackleton, C. & Andreassen, K. (2017). Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea. Quaternary Science Reviews, 169, 131-147. https://doi.org/10.1016/j.quascirev.2017.06.004 FRIDAID 1480897 doi:10.1016/j.quascirev.2017.06.004 0277-3791 1873-457X https://hdl.handle.net/10037/13337 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2017.06.004 |
container_title |
Quaternary Science Reviews |
container_volume |
169 |
container_start_page |
131 |
op_container_end_page |
147 |
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1766257553895849984 |