A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry
The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene bathymetric evolution of the southern Barents Sea using a numerical modelling a...
Published in: | Norwegian Journal of Geology |
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Scandinavian University Press
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Online Access: | http://hdl.handle.net/11250/2482364 https://doi.org/10.17850/njg97-1-01 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2482364 2023-05-15T15:38:00+02:00 A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry Zieba, Krzysztof Jan Omosanya, Kamaldeen Olakunle Knies, Jochen 2017 http://hdl.handle.net/11250/2482364 https://doi.org/10.17850/njg97-1-01 eng eng Scandinavian University Press Norges forskningsråd: 223259 Norsk Geologisk Tidsskrift. 2017, 97 (1), 1-19. urn:issn:0029-196X http://hdl.handle.net/11250/2482364 https://doi.org/10.17850/njg97-1-01 cristin:1455984 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 1-19 97 Norsk Geologisk Tidsskrift 1 Journal article Peer reviewed 2017 ftntnutrondheimi https://doi.org/10.17850/njg97-1-01 2019-09-17T06:53:39Z The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene bathymetric evolution of the southern Barents Sea using a numerical modelling approach that considers the influence of regional isostasy on relief development. The model presented in this work shows that most of the bathymetric features were initiated prior to the first documented, shelf-edge glaciations at around 1.5 Ma. During the Early Pleistocene (Calabrian), the Barents Sea shelf was close to sea level with some areas elevated to about 300 m. Most of the shelf experienced up to 200 m topography reduction during the Early to Middle Pleistocene (1.5–0.7 Ma) facilitating bifurcation of the North Atlantic waters into the Barents Sea. Later during the Middle Pleistocene–Present (0.7–0.0 Ma) the relief deepened by 0 to 250 m. Our results demonstrate that the present-day topography of the southern Barents Sea is the consequence of glacial activity influenced by a regional isostatic component, which is the result of selective trough erosion and significant sediment deposition at the Barents Sea margins during the Pleistocene. publishedVersion © Copyright the authors. This work is licensed under a Creative Commons Attribution 4.0 International License. Article in Journal/Newspaper Barents Sea North Atlantic NTNU Open Archive (Norwegian University of Science and Technology) Barents Sea Norwegian Journal of Geology |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene bathymetric evolution of the southern Barents Sea using a numerical modelling approach that considers the influence of regional isostasy on relief development. The model presented in this work shows that most of the bathymetric features were initiated prior to the first documented, shelf-edge glaciations at around 1.5 Ma. During the Early Pleistocene (Calabrian), the Barents Sea shelf was close to sea level with some areas elevated to about 300 m. Most of the shelf experienced up to 200 m topography reduction during the Early to Middle Pleistocene (1.5–0.7 Ma) facilitating bifurcation of the North Atlantic waters into the Barents Sea. Later during the Middle Pleistocene–Present (0.7–0.0 Ma) the relief deepened by 0 to 250 m. Our results demonstrate that the present-day topography of the southern Barents Sea is the consequence of glacial activity influenced by a regional isostatic component, which is the result of selective trough erosion and significant sediment deposition at the Barents Sea margins during the Pleistocene. publishedVersion © Copyright the authors. This work is licensed under a Creative Commons Attribution 4.0 International License. |
format |
Article in Journal/Newspaper |
author |
Zieba, Krzysztof Jan Omosanya, Kamaldeen Olakunle Knies, Jochen |
spellingShingle |
Zieba, Krzysztof Jan Omosanya, Kamaldeen Olakunle Knies, Jochen A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
author_facet |
Zieba, Krzysztof Jan Omosanya, Kamaldeen Olakunle Knies, Jochen |
author_sort |
Zieba, Krzysztof Jan |
title |
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
title_short |
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
title_full |
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
title_fullStr |
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
title_full_unstemmed |
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry |
title_sort |
flexural isostasy model for the pleistocene evolution of the barents sea bathymetry |
publisher |
Scandinavian University Press |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2482364 https://doi.org/10.17850/njg97-1-01 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea North Atlantic |
genre_facet |
Barents Sea North Atlantic |
op_source |
1-19 97 Norsk Geologisk Tidsskrift 1 |
op_relation |
Norges forskningsråd: 223259 Norsk Geologisk Tidsskrift. 2017, 97 (1), 1-19. urn:issn:0029-196X http://hdl.handle.net/11250/2482364 https://doi.org/10.17850/njg97-1-01 cristin:1455984 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17850/njg97-1-01 |
container_title |
Norwegian Journal of Geology |
_version_ |
1766368693869084672 |