Antarctic palaeo-ice streams
We review the geomorphological, sedimentological and chronological evidence for palaeo-ice streams on the continental shelf of Antarctica and use this information to investigate basal conditions and processes, and to identify factors controlling grounding-line retreat. A comprehensive circum-Antarct...
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Online Access: | https://archimer.ifremer.fr/doc/00266/37684/82771.pdf https://doi.org/10.1016/j.earscirev.2011.10.003 https://archimer.ifremer.fr/doc/00266/37684/ |
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ftarchimer:oai:archimer.ifremer.fr:37684 2023-05-15T13:50:50+02:00 Antarctic palaeo-ice streams Livingstone, Stephen J. Cofaigh, Colm O. Stokes, Chris R. Hillenbrand, Claus-dieter Vieli, Andreas Jamieson, Stewart S. R. 2012-02 application/pdf https://archimer.ifremer.fr/doc/00266/37684/82771.pdf https://doi.org/10.1016/j.earscirev.2011.10.003 https://archimer.ifremer.fr/doc/00266/37684/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00266/37684/82771.pdf doi:10.1016/j.earscirev.2011.10.003 https://archimer.ifremer.fr/doc/00266/37684/ 2011 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use Earth-science Reviews (0012-8252) (Elsevier Science Bv), 2012-02 , Vol. 111 , N. 1-2 , P. 90-128 Antarctica Ice stream Grounding-line retreat Glacial geomorphology Deglacial history text Publication info:eu-repo/semantics/article 2012 ftarchimer https://doi.org/10.1016/j.earscirev.2011.10.003 2021-09-23T20:26:12Z We review the geomorphological, sedimentological and chronological evidence for palaeo-ice streams on the continental shelf of Antarctica and use this information to investigate basal conditions and processes, and to identify factors controlling grounding-line retreat. A comprehensive circum-Antarctic inventory of known palaeo-ice streams, their basal characteristics and minimum ages for their retreat following the Last Glacial Maximum (LGM) is also provided. Antarctic palaeo-ice streams are identified by a set of diagnostic landforms that, nonetheless, display considerable spatial variability due to the influence of substrate, flow velocity and subglacial processes. During the LGM, palaeo-ice streams extended, via bathymetric troughs, to the shelf edge of the Antarctic Peninsula and West Antarctica, and typically, to the mid-outer shelf of East Antarctica. The retreat history of the Antarctic Ice Sheet since the LGM is characterised by considerable asynchroneity, with individual ice streams exhibiting different retreat histories. This variability allows Antarctic palaeo-ice streams to be classified into discrete retreat styles and the controls on grounding-line retreat to be investigated. Such analysis highlights the important impact of internal factors on ice stream dynamics, such as bed characteristics and slope, and drainage basin size. Whilst grounding-line retreat may be triggered, and to some extent paced, by external (atmospheric and oceanic) forcing, the individual characteristics of each ice stream will modulate the precise timing and rate of retreat through time. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Antarctic Peninsula East Antarctica The Antarctic West Antarctica Earth-Science Reviews 111 1-2 90 128 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Antarctica Ice stream Grounding-line retreat Glacial geomorphology Deglacial history |
spellingShingle |
Antarctica Ice stream Grounding-line retreat Glacial geomorphology Deglacial history Livingstone, Stephen J. Cofaigh, Colm O. Stokes, Chris R. Hillenbrand, Claus-dieter Vieli, Andreas Jamieson, Stewart S. R. Antarctic palaeo-ice streams |
topic_facet |
Antarctica Ice stream Grounding-line retreat Glacial geomorphology Deglacial history |
description |
We review the geomorphological, sedimentological and chronological evidence for palaeo-ice streams on the continental shelf of Antarctica and use this information to investigate basal conditions and processes, and to identify factors controlling grounding-line retreat. A comprehensive circum-Antarctic inventory of known palaeo-ice streams, their basal characteristics and minimum ages for their retreat following the Last Glacial Maximum (LGM) is also provided. Antarctic palaeo-ice streams are identified by a set of diagnostic landforms that, nonetheless, display considerable spatial variability due to the influence of substrate, flow velocity and subglacial processes. During the LGM, palaeo-ice streams extended, via bathymetric troughs, to the shelf edge of the Antarctic Peninsula and West Antarctica, and typically, to the mid-outer shelf of East Antarctica. The retreat history of the Antarctic Ice Sheet since the LGM is characterised by considerable asynchroneity, with individual ice streams exhibiting different retreat histories. This variability allows Antarctic palaeo-ice streams to be classified into discrete retreat styles and the controls on grounding-line retreat to be investigated. Such analysis highlights the important impact of internal factors on ice stream dynamics, such as bed characteristics and slope, and drainage basin size. Whilst grounding-line retreat may be triggered, and to some extent paced, by external (atmospheric and oceanic) forcing, the individual characteristics of each ice stream will modulate the precise timing and rate of retreat through time. |
format |
Article in Journal/Newspaper |
author |
Livingstone, Stephen J. Cofaigh, Colm O. Stokes, Chris R. Hillenbrand, Claus-dieter Vieli, Andreas Jamieson, Stewart S. R. |
author_facet |
Livingstone, Stephen J. Cofaigh, Colm O. Stokes, Chris R. Hillenbrand, Claus-dieter Vieli, Andreas Jamieson, Stewart S. R. |
author_sort |
Livingstone, Stephen J. |
title |
Antarctic palaeo-ice streams |
title_short |
Antarctic palaeo-ice streams |
title_full |
Antarctic palaeo-ice streams |
title_fullStr |
Antarctic palaeo-ice streams |
title_full_unstemmed |
Antarctic palaeo-ice streams |
title_sort |
antarctic palaeo-ice streams |
publisher |
Elsevier Science Bv |
publishDate |
2012 |
url |
https://archimer.ifremer.fr/doc/00266/37684/82771.pdf https://doi.org/10.1016/j.earscirev.2011.10.003 https://archimer.ifremer.fr/doc/00266/37684/ |
geographic |
Antarctic Antarctic Peninsula East Antarctica The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
op_source |
Earth-science Reviews (0012-8252) (Elsevier Science Bv), 2012-02 , Vol. 111 , N. 1-2 , P. 90-128 |
op_relation |
https://archimer.ifremer.fr/doc/00266/37684/82771.pdf doi:10.1016/j.earscirev.2011.10.003 https://archimer.ifremer.fr/doc/00266/37684/ |
op_rights |
2011 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.earscirev.2011.10.003 |
container_title |
Earth-Science Reviews |
container_volume |
111 |
container_issue |
1-2 |
container_start_page |
90 |
op_container_end_page |
128 |
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1766254140492611584 |