Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography
The marine-based Atlantic periphery of the last NW European Ice Sheet experienced significant advances and retreats of its marine sector during its existence. It therefore had considerable potential to intermittently inject freshwater or ice pulses to the North Atlantic. These European inputs had po...
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2012
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Online Access: | https://research.manchester.ac.uk/en/publications/9148fbfd-772f-4aea-adfa-c935bee1285f https://doi.org/10.1016/j.gloplacha.2012.09.004 |
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ftumanchesterpub:oai:pure.atira.dk:publications/9148fbfd-772f-4aea-adfa-c935bee1285f 2024-05-12T08:05:17+00:00 Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography Bigg, G. R. Clark, C. D. Greenwood, S. L. Haflidason, H. Hughes, A. L.C. Levine, R. C. Nygård, A. Sejrup, H. P. 2012-12-01 https://research.manchester.ac.uk/en/publications/9148fbfd-772f-4aea-adfa-c935bee1285f https://doi.org/10.1016/j.gloplacha.2012.09.004 eng eng https://research.manchester.ac.uk/en/publications/9148fbfd-772f-4aea-adfa-c935bee1285f info:eu-repo/semantics/restrictedAccess Bigg , G R , Clark , C D , Greenwood , S L , Haflidason , H , Hughes , A L C , Levine , R C , Nygård , A & Sejrup , H P 2012 , ' Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial : A synthesis of modelling and palaeoceanography ' , Global and Planetary Change , vol. 98-99 , pp. 153-165 . https://doi.org/10.1016/j.gloplacha.2012.09.004 European Ice Sheet Iceberg modelling Marine ice break-up Modelling and palaeodata synthesis article 2012 ftumanchesterpub https://doi.org/10.1016/j.gloplacha.2012.09.004 2024-04-15T00:00:24Z The marine-based Atlantic periphery of the last NW European Ice Sheet experienced significant advances and retreats of its marine sector during its existence. It therefore had considerable potential to intermittently inject freshwater or ice pulses to the North Atlantic. These European inputs had poorly known consequences for ocean circulation and climate. Here we examine the history of the western margin of the European Ice Sheet, from 34 to 15. cal. ka BP, and use a combination of modelling and proxy evidence to explore the impact on the North Atlantic of the fresh water and iceberg injections that accompanied phases of retreat of the marine sector of the NW European Ice Sheet. We find that the lack of geographical synchronicity in the responses of the different components of the 3000. km long sector meant that the scale of the climate consequences of ice discharge most likely remained regional, except during the final deglaciation phase, around 17-15. cal. ka BP. At this time, as the later component of the recently introduced concept of an extended Heinrich event H1, both proxy and modelling evidence suggest rapid sector collapse led to partial shut-down of the Atlantic overturning and a basin-wide cooling. Article in Journal/Newspaper Ice Sheet North Atlantic The University of Manchester: Research Explorer Global and Planetary Change 98-99 153 165 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
topic |
European Ice Sheet Iceberg modelling Marine ice break-up Modelling and palaeodata synthesis |
spellingShingle |
European Ice Sheet Iceberg modelling Marine ice break-up Modelling and palaeodata synthesis Bigg, G. R. Clark, C. D. Greenwood, S. L. Haflidason, H. Hughes, A. L.C. Levine, R. C. Nygård, A. Sejrup, H. P. Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
topic_facet |
European Ice Sheet Iceberg modelling Marine ice break-up Modelling and palaeodata synthesis |
description |
The marine-based Atlantic periphery of the last NW European Ice Sheet experienced significant advances and retreats of its marine sector during its existence. It therefore had considerable potential to intermittently inject freshwater or ice pulses to the North Atlantic. These European inputs had poorly known consequences for ocean circulation and climate. Here we examine the history of the western margin of the European Ice Sheet, from 34 to 15. cal. ka BP, and use a combination of modelling and proxy evidence to explore the impact on the North Atlantic of the fresh water and iceberg injections that accompanied phases of retreat of the marine sector of the NW European Ice Sheet. We find that the lack of geographical synchronicity in the responses of the different components of the 3000. km long sector meant that the scale of the climate consequences of ice discharge most likely remained regional, except during the final deglaciation phase, around 17-15. cal. ka BP. At this time, as the later component of the recently introduced concept of an extended Heinrich event H1, both proxy and modelling evidence suggest rapid sector collapse led to partial shut-down of the Atlantic overturning and a basin-wide cooling. |
format |
Article in Journal/Newspaper |
author |
Bigg, G. R. Clark, C. D. Greenwood, S. L. Haflidason, H. Hughes, A. L.C. Levine, R. C. Nygård, A. Sejrup, H. P. |
author_facet |
Bigg, G. R. Clark, C. D. Greenwood, S. L. Haflidason, H. Hughes, A. L.C. Levine, R. C. Nygård, A. Sejrup, H. P. |
author_sort |
Bigg, G. R. |
title |
Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
title_short |
Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
title_full |
Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
title_fullStr |
Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
title_full_unstemmed |
Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial:A synthesis of modelling and palaeoceanography |
title_sort |
sensitivity of the north atlantic circulation to break-up of the marine sectors of the nw european ice sheets during the last glacial:a synthesis of modelling and palaeoceanography |
publishDate |
2012 |
url |
https://research.manchester.ac.uk/en/publications/9148fbfd-772f-4aea-adfa-c935bee1285f https://doi.org/10.1016/j.gloplacha.2012.09.004 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
Bigg , G R , Clark , C D , Greenwood , S L , Haflidason , H , Hughes , A L C , Levine , R C , Nygård , A & Sejrup , H P 2012 , ' Sensitivity of the North Atlantic circulation to break-up of the marine sectors of the NW European ice sheets during the last Glacial : A synthesis of modelling and palaeoceanography ' , Global and Planetary Change , vol. 98-99 , pp. 153-165 . https://doi.org/10.1016/j.gloplacha.2012.09.004 |
op_relation |
https://research.manchester.ac.uk/en/publications/9148fbfd-772f-4aea-adfa-c935bee1285f |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.gloplacha.2012.09.004 |
container_title |
Global and Planetary Change |
container_volume |
98-99 |
container_start_page |
153 |
op_container_end_page |
165 |
_version_ |
1798847571207127040 |