Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas
Abstract Sediment proxy records from a continuous, 1.5 million year long deep‐sea sediment core from a site in the western Norwegian Sea were used to obtain new insights into the nature of palaeoceanographic change in the northern North Atlantic (Nordic seas) during the climatic shift of the Mid‐Ple...
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crwiley:10.1002/jqs.735 2024-09-15T18:20:28+00:00 Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas Helmke, Jan P. Bauch, Henning A. Mazaud, Alain 2003 http://dx.doi.org/10.1002/jqs.735 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.735 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 18, issue 2, page 183-191 ISSN 0267-8179 1099-1417 journal-article 2003 crwiley https://doi.org/10.1002/jqs.735 2024-07-11T04:35:30Z Abstract Sediment proxy records from a continuous, 1.5 million year long deep‐sea sediment core from a site in the western Norwegian Sea were used to obtain new insights into the nature of palaeoceanographic change in the northern North Atlantic (Nordic seas) during the climatic shift of the Mid‐Pleistocene Revolution (MPR). Red‐green sediment colour and magnetic susceptibility records both reveal significant differences in their mean values when comparing the intervals older than 700 000 yr (700 ka) with those from the past 500 kyr. The timing and duration of these changes indicates that the MPR in the Nordic seas is characterised by a gradual transition lasting about 200 kyr. Together with further sedimentological evidence this suggests that the mid‐Pleistocene climate shift was accompanied by a general change in ice‐drift pattern. It is further proposed that prior to the onset of the major late Pleistocene glaciations in the Northern Hemisphere a significant proportion of the ice in the eastern Nordic seas originated from a southern provenance, whereas later it dominantly came from the surrounding landmasses. Copyright © 2003 John Wiley & Sons, Ltd. Article in Journal/Newspaper Nordic Seas North Atlantic Norwegian Sea Wiley Online Library Journal of Quaternary Science 18 2 183 191 |
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Wiley Online Library |
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English |
description |
Abstract Sediment proxy records from a continuous, 1.5 million year long deep‐sea sediment core from a site in the western Norwegian Sea were used to obtain new insights into the nature of palaeoceanographic change in the northern North Atlantic (Nordic seas) during the climatic shift of the Mid‐Pleistocene Revolution (MPR). Red‐green sediment colour and magnetic susceptibility records both reveal significant differences in their mean values when comparing the intervals older than 700 000 yr (700 ka) with those from the past 500 kyr. The timing and duration of these changes indicates that the MPR in the Nordic seas is characterised by a gradual transition lasting about 200 kyr. Together with further sedimentological evidence this suggests that the mid‐Pleistocene climate shift was accompanied by a general change in ice‐drift pattern. It is further proposed that prior to the onset of the major late Pleistocene glaciations in the Northern Hemisphere a significant proportion of the ice in the eastern Nordic seas originated from a southern provenance, whereas later it dominantly came from the surrounding landmasses. Copyright © 2003 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Helmke, Jan P. Bauch, Henning A. Mazaud, Alain |
spellingShingle |
Helmke, Jan P. Bauch, Henning A. Mazaud, Alain Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
author_facet |
Helmke, Jan P. Bauch, Henning A. Mazaud, Alain |
author_sort |
Helmke, Jan P. |
title |
Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
title_short |
Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
title_full |
Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
title_fullStr |
Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
title_full_unstemmed |
Evidence for a mid‐Pleistocene shift of ice‐drift pattern in the Nordic seas |
title_sort |
evidence for a mid‐pleistocene shift of ice‐drift pattern in the nordic seas |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1002/jqs.735 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.735 |
genre |
Nordic Seas North Atlantic Norwegian Sea |
genre_facet |
Nordic Seas North Atlantic Norwegian Sea |
op_source |
Journal of Quaternary Science volume 18, issue 2, page 183-191 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.735 |
container_title |
Journal of Quaternary Science |
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18 |
container_issue |
2 |
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183 |
op_container_end_page |
191 |
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1810458852914626560 |