Late Weichselian Glaciation of the Russian High Arctic
A numerical ice-sheet model was used to reconstruct the Late Weichselian glaciation of the Eurasian High Arctic, between Franz Josef Land and Severnaya Zemlya. An ice sheet was developed over the entire Eurasian High Arctic so that ice flow from the central Barents and Kara seas toward the northern...
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Cambridge University Press (CUP)
1999
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crcambridgeupr:10.1006/qres.1999.2082 2024-09-15T17:57:52+00:00 Late Weichselian Glaciation of the Russian High Arctic Siegert, Martin J. Dowdeswell, Julian A. Melles, Martin 1999 http://dx.doi.org/10.1006/qres.1999.2082 http://api.elsevier.com/content/article/PII:S0033589499920823?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920823?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400025886 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 52, issue 3, page 273-285 ISSN 0033-5894 1096-0287 journal-article 1999 crcambridgeupr https://doi.org/10.1006/qres.1999.2082 2024-07-24T04:04:08Z A numerical ice-sheet model was used to reconstruct the Late Weichselian glaciation of the Eurasian High Arctic, between Franz Josef Land and Severnaya Zemlya. An ice sheet was developed over the entire Eurasian High Arctic so that ice flow from the central Barents and Kara seas toward the northern Russian Arctic could be accounted for. An inverse approach to modeling was utilized, where ice-sheet results were forced to be compatible with geological information indicating ice-free conditions over the Taymyr Peninsula during the Late Weichselian. The model indicates complete glaciation of the Barents and Kara seas and predicts a “maximum-sized” ice sheet for the Late Weichselian Russian High Arctic. In this scenario, full-glacial conditions are characterized by a 1500-m-thick ice mass over the Barents Sea, from which ice flowed to the north and west within several bathymetric troughs as large ice streams. In contrast to this reconstruction, a “minimum” model of glaciation involves restricted glaciation in the Kara Sea, where the ice thickness is only 300 m in the south and which is free of ice in the north across Severnaya Zemlya. Our maximum reconstruction is compatible with geological information that indicates complete glaciation of the Barents Sea. However, geological data from Severnaya Zemlya suggest our minimum model is more relevant further east. This, in turn, implies a strong paleoclimatic gradient to colder and drier conditions eastward across the Eurasian Arctic during the Late Weichselian. Article in Journal/Newspaper Barents Sea Franz Josef Land Ice Sheet Kara Sea Severnaya Zemlya Taymyr Taymyr Peninsula Cambridge University Press Quaternary Research 52 3 273 285 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
A numerical ice-sheet model was used to reconstruct the Late Weichselian glaciation of the Eurasian High Arctic, between Franz Josef Land and Severnaya Zemlya. An ice sheet was developed over the entire Eurasian High Arctic so that ice flow from the central Barents and Kara seas toward the northern Russian Arctic could be accounted for. An inverse approach to modeling was utilized, where ice-sheet results were forced to be compatible with geological information indicating ice-free conditions over the Taymyr Peninsula during the Late Weichselian. The model indicates complete glaciation of the Barents and Kara seas and predicts a “maximum-sized” ice sheet for the Late Weichselian Russian High Arctic. In this scenario, full-glacial conditions are characterized by a 1500-m-thick ice mass over the Barents Sea, from which ice flowed to the north and west within several bathymetric troughs as large ice streams. In contrast to this reconstruction, a “minimum” model of glaciation involves restricted glaciation in the Kara Sea, where the ice thickness is only 300 m in the south and which is free of ice in the north across Severnaya Zemlya. Our maximum reconstruction is compatible with geological information that indicates complete glaciation of the Barents Sea. However, geological data from Severnaya Zemlya suggest our minimum model is more relevant further east. This, in turn, implies a strong paleoclimatic gradient to colder and drier conditions eastward across the Eurasian Arctic during the Late Weichselian. |
format |
Article in Journal/Newspaper |
author |
Siegert, Martin J. Dowdeswell, Julian A. Melles, Martin |
spellingShingle |
Siegert, Martin J. Dowdeswell, Julian A. Melles, Martin Late Weichselian Glaciation of the Russian High Arctic |
author_facet |
Siegert, Martin J. Dowdeswell, Julian A. Melles, Martin |
author_sort |
Siegert, Martin J. |
title |
Late Weichselian Glaciation of the Russian High Arctic |
title_short |
Late Weichselian Glaciation of the Russian High Arctic |
title_full |
Late Weichselian Glaciation of the Russian High Arctic |
title_fullStr |
Late Weichselian Glaciation of the Russian High Arctic |
title_full_unstemmed |
Late Weichselian Glaciation of the Russian High Arctic |
title_sort |
late weichselian glaciation of the russian high arctic |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1006/qres.1999.2082 http://api.elsevier.com/content/article/PII:S0033589499920823?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920823?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400025886 |
genre |
Barents Sea Franz Josef Land Ice Sheet Kara Sea Severnaya Zemlya Taymyr Taymyr Peninsula |
genre_facet |
Barents Sea Franz Josef Land Ice Sheet Kara Sea Severnaya Zemlya Taymyr Taymyr Peninsula |
op_source |
Quaternary Research volume 52, issue 3, page 273-285 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1999.2082 |
container_title |
Quaternary Research |
container_volume |
52 |
container_issue |
3 |
container_start_page |
273 |
op_container_end_page |
285 |
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1810434073691160576 |