A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction
Controversy exists over the extent of glaciation in Eastern Asia at the Last Glacial Maximum: complete ice sheet cover vs. restricted mountain icefields (an area discrepancy equivalent to 3.7 Greenland Ice Sheets). Current arguments favour the latter. However, significant last glacial ice-rafted deb...
Published in: | Earth and Planetary Science Letters |
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Language: | English |
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2008
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Online Access: | https://research.manchester.ac.uk/en/publications/ca9d5bef-5366-45c1-823b-664835aa8f6b https://doi.org/10.1016/j.epsl.2007.10.052 http://eprints.whiterose.ac.uk/3715/ |
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ftumanchesterpub:oai:pure.atira.dk:publications/ca9d5bef-5366-45c1-823b-664835aa8f6b 2024-05-12T08:04:36+00:00 A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction Bigg, G. R. Clark, C. D. Hughes, A. L.C. 2008-01-30 https://research.manchester.ac.uk/en/publications/ca9d5bef-5366-45c1-823b-664835aa8f6b https://doi.org/10.1016/j.epsl.2007.10.052 http://eprints.whiterose.ac.uk/3715/ eng eng https://research.manchester.ac.uk/en/publications/ca9d5bef-5366-45c1-823b-664835aa8f6b info:eu-repo/semantics/openAccess Bigg , G R , Clark , C D & Hughes , A L C 2008 , ' A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction ' , Earth and Planetary Science Letters , vol. 265 , no. 3-4 , pp. 559-570 . https://doi.org/10.1016/j.epsl.2007.10.052 ice sheet ice-rafted debris Kamchatka Last Glacial ODP Site 883 volcanic ash article 2008 ftumanchesterpub https://doi.org/10.1016/j.epsl.2007.10.052 2024-04-15T00:00:24Z Controversy exists over the extent of glaciation in Eastern Asia at the Last Glacial Maximum: complete ice sheet cover vs. restricted mountain icefields (an area discrepancy equivalent to 3.7 Greenland Ice Sheets). Current arguments favour the latter. However, significant last glacial ice-rafted debris (IRD) exists in NW Pacific ocean cores, which must have been sourced from a major ice sheet somewhere bordering the North Pacific. The origin of this IRD is addressed through a combination of marine core analysis, iceberg trajectory modelling and remote sensing of glacial geomorphology. We find compelling evidence for two stages of glaciation centred on the Kamchatka area of maritime southeast Russia during the last glacial, with ice extent intermediate in size between previous maximum and minimum reconstructions. Furthermore, a significant increase in iceberg flux precedes, and accompanies, a substantial marine core ash deposit at around 40 ka BP. We speculate that rapid decay of the first stage of the ice sheet may have triggered substantial volcanic activity. Article in Journal/Newspaper Greenland Ice Sheet Kamchatka The University of Manchester: Research Explorer Greenland Pacific Earth and Planetary Science Letters 265 3-4 559 570 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
topic |
ice sheet ice-rafted debris Kamchatka Last Glacial ODP Site 883 volcanic ash |
spellingShingle |
ice sheet ice-rafted debris Kamchatka Last Glacial ODP Site 883 volcanic ash Bigg, G. R. Clark, C. D. Hughes, A. L.C. A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
topic_facet |
ice sheet ice-rafted debris Kamchatka Last Glacial ODP Site 883 volcanic ash |
description |
Controversy exists over the extent of glaciation in Eastern Asia at the Last Glacial Maximum: complete ice sheet cover vs. restricted mountain icefields (an area discrepancy equivalent to 3.7 Greenland Ice Sheets). Current arguments favour the latter. However, significant last glacial ice-rafted debris (IRD) exists in NW Pacific ocean cores, which must have been sourced from a major ice sheet somewhere bordering the North Pacific. The origin of this IRD is addressed through a combination of marine core analysis, iceberg trajectory modelling and remote sensing of glacial geomorphology. We find compelling evidence for two stages of glaciation centred on the Kamchatka area of maritime southeast Russia during the last glacial, with ice extent intermediate in size between previous maximum and minimum reconstructions. Furthermore, a significant increase in iceberg flux precedes, and accompanies, a substantial marine core ash deposit at around 40 ka BP. We speculate that rapid decay of the first stage of the ice sheet may have triggered substantial volcanic activity. |
format |
Article in Journal/Newspaper |
author |
Bigg, G. R. Clark, C. D. Hughes, A. L.C. |
author_facet |
Bigg, G. R. Clark, C. D. Hughes, A. L.C. |
author_sort |
Bigg, G. R. |
title |
A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
title_short |
A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
title_full |
A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
title_fullStr |
A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
title_full_unstemmed |
A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction |
title_sort |
last glacial ice sheet on the pacific russian coast and catastrophic change arising from coupled ice-volcanic interaction |
publishDate |
2008 |
url |
https://research.manchester.ac.uk/en/publications/ca9d5bef-5366-45c1-823b-664835aa8f6b https://doi.org/10.1016/j.epsl.2007.10.052 http://eprints.whiterose.ac.uk/3715/ |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland Ice Sheet Kamchatka |
genre_facet |
Greenland Ice Sheet Kamchatka |
op_source |
Bigg , G R , Clark , C D & Hughes , A L C 2008 , ' A last glacial ice sheet on the Pacific Russian coast and catastrophic change arising from coupled ice-volcanic interaction ' , Earth and Planetary Science Letters , vol. 265 , no. 3-4 , pp. 559-570 . https://doi.org/10.1016/j.epsl.2007.10.052 |
op_relation |
https://research.manchester.ac.uk/en/publications/ca9d5bef-5366-45c1-823b-664835aa8f6b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2007.10.052 |
container_title |
Earth and Planetary Science Letters |
container_volume |
265 |
container_issue |
3-4 |
container_start_page |
559 |
op_container_end_page |
570 |
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1798846827743674368 |