Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas
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...
Published in: | Journal of Quaternary Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2003
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/6118/ https://oceanrep.geomar.de/id/eprint/6118/1/2003_HelmkeBauchMazaud_JQS_735_ftp.pdf https://doi.org/10.1002/jqs.735 |
id |
ftoceanrep:oai:oceanrep.geomar.de:6118 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:6118 2023-05-15T17:24:17+02:00 Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas Helmke, Jan P. Bauch, Henning A. Mazaud, Alain 2003 text https://oceanrep.geomar.de/id/eprint/6118/ https://oceanrep.geomar.de/id/eprint/6118/1/2003_HelmkeBauchMazaud_JQS_735_ftp.pdf https://doi.org/10.1002/jqs.735 en eng Wiley Quaternary Research Association https://oceanrep.geomar.de/id/eprint/6118/1/2003_HelmkeBauchMazaud_JQS_735_ftp.pdf Helmke, J. P., Bauch, H. A. and Mazaud, A. (2003) Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas. Journal of Quaternary Science, 18 . pp. 183-191. DOI 10.1002/jqs.735 <https://doi.org/10.1002/jqs.735>. doi:10.1002/jqs.735 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2003 ftoceanrep https://doi.org/10.1002/jqs.735 2023-04-07T14:52:24Z 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. Article in Journal/Newspaper Nordic Seas North Atlantic Norwegian Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Norwegian Sea Journal of Quaternary Science 18 2 183 191 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
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. |
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 change 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 change of ice-drift pattern in the Nordic seas |
title_short |
Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas |
title_full |
Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas |
title_fullStr |
Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas |
title_full_unstemmed |
Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas |
title_sort |
evidence for a mid-pleistocene change of ice-drift pattern in the nordic seas |
publisher |
Wiley |
publishDate |
2003 |
url |
https://oceanrep.geomar.de/id/eprint/6118/ https://oceanrep.geomar.de/id/eprint/6118/1/2003_HelmkeBauchMazaud_JQS_735_ftp.pdf https://doi.org/10.1002/jqs.735 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Nordic Seas North Atlantic Norwegian Sea |
genre_facet |
Nordic Seas North Atlantic Norwegian Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/6118/1/2003_HelmkeBauchMazaud_JQS_735_ftp.pdf Helmke, J. P., Bauch, H. A. and Mazaud, A. (2003) Evidence for a mid-Pleistocene change of ice-drift pattern in the Nordic seas. Journal of Quaternary Science, 18 . pp. 183-191. DOI 10.1002/jqs.735 <https://doi.org/10.1002/jqs.735>. doi:10.1002/jqs.735 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/jqs.735 |
container_title |
Journal of Quaternary Science |
container_volume |
18 |
container_issue |
2 |
container_start_page |
183 |
op_container_end_page |
191 |
_version_ |
1766115240500527104 |