New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea
Downcore studies of planktonic and benthonic foraminifera and δ 18 O and δ 13 C in the planktonic foraminifer Neogloboquadrina pachyderma (sin.) in two piston cores from the southern part of the Norwegian Sea suggest large changes in the oceanic circulation pattern at the end of oxygenisotope stage...
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Cambridge University Press (CUP)
1984
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Online Access: | http://dx.doi.org/10.1016/0033-5894(84)90091-7 http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400016331 |
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crcambridgeupr:10.1016/0033-5894(84)90091-7 2024-06-09T07:47:46+00:00 New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea Sejrup, Hans Petter Jansen, Eystein Erlenkeuser, Helmut Holtedahl, Hans 1984 http://dx.doi.org/10.1016/0033-5894(84)90091-7 http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400016331 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 21, issue 1, page 74-84 ISSN 0033-5894 1096-0287 journal-article 1984 crcambridgeupr https://doi.org/10.1016/0033-5894(84)90091-7 2024-05-15T13:09:18Z Downcore studies of planktonic and benthonic foraminifera and δ 18 O and δ 13 C in the planktonic foraminifer Neogloboquadrina pachyderma (sin.) in two piston cores from the southern part of the Norwegian Sea suggest large changes in the oceanic circulation pattern at the end of oxygenisotope stage 2 and in the early part of stage 1. Prior to oxygen-isotope Termination IA (16,000–13,000 yr B.P.), an isolated watermass with lower oxygen content and temperature warmer than today existed below a low salinity ice-covered surface layer in the Norwegian Sea. Close to Termination IA, well-oxygenated deep water, probably with positive temperatures, was introduced. This deep water, which must have had physical and/or chemical parameters different from those of present deep water in the Norwegian Sea, could have been introduced from the North Atlantic or been formed within the basin by another mechanism than that which forms the present deep water of the Norwegian Sea. A seasonal ice cover in the southern part of the Norwegian Sea is proposed for the period between Termination IA and the beginning of IB (close to 10,000 yr B.P.). The present situation, with strong influx of warm Atlantic surface-water and deep-water formation by surface cooling, was established at Termination IB. Article in Journal/Newspaper Neogloboquadrina pachyderma North Atlantic Norwegian Sea Cambridge University Press Norwegian Sea Quaternary Research 21 1 74 84 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Downcore studies of planktonic and benthonic foraminifera and δ 18 O and δ 13 C in the planktonic foraminifer Neogloboquadrina pachyderma (sin.) in two piston cores from the southern part of the Norwegian Sea suggest large changes in the oceanic circulation pattern at the end of oxygenisotope stage 2 and in the early part of stage 1. Prior to oxygen-isotope Termination IA (16,000–13,000 yr B.P.), an isolated watermass with lower oxygen content and temperature warmer than today existed below a low salinity ice-covered surface layer in the Norwegian Sea. Close to Termination IA, well-oxygenated deep water, probably with positive temperatures, was introduced. This deep water, which must have had physical and/or chemical parameters different from those of present deep water in the Norwegian Sea, could have been introduced from the North Atlantic or been formed within the basin by another mechanism than that which forms the present deep water of the Norwegian Sea. A seasonal ice cover in the southern part of the Norwegian Sea is proposed for the period between Termination IA and the beginning of IB (close to 10,000 yr B.P.). The present situation, with strong influx of warm Atlantic surface-water and deep-water formation by surface cooling, was established at Termination IB. |
format |
Article in Journal/Newspaper |
author |
Sejrup, Hans Petter Jansen, Eystein Erlenkeuser, Helmut Holtedahl, Hans |
spellingShingle |
Sejrup, Hans Petter Jansen, Eystein Erlenkeuser, Helmut Holtedahl, Hans New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
author_facet |
Sejrup, Hans Petter Jansen, Eystein Erlenkeuser, Helmut Holtedahl, Hans |
author_sort |
Sejrup, Hans Petter |
title |
New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
title_short |
New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
title_full |
New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
title_fullStr |
New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
title_full_unstemmed |
New Faunal and Isotopic Evidence on the Late Weichselian—Holocene Oceanographic Changes in the Norwegian Sea |
title_sort |
new faunal and isotopic evidence on the late weichselian—holocene oceanographic changes in the norwegian sea |
publisher |
Cambridge University Press (CUP) |
publishDate |
1984 |
url |
http://dx.doi.org/10.1016/0033-5894(84)90091-7 http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589484900917?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400016331 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Neogloboquadrina pachyderma North Atlantic Norwegian Sea |
genre_facet |
Neogloboquadrina pachyderma North Atlantic Norwegian Sea |
op_source |
Quaternary Research volume 21, issue 1, page 74-84 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(84)90091-7 |
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Quaternary Research |
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21 |
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1 |
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74 |
op_container_end_page |
84 |
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1801379144714420224 |