Antarctic palaeo-ice streams
We review the geomorphological, sedimentological and chronological evidence for palaeo-icestreams 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-Antarcti...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/17944/ http://www.sciencedirect.com/science/article/pii/S0012825211001620 |
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ftnerc:oai:nora.nerc.ac.uk:17944 2023-05-15T13:45:12+02:00 Antarctic palaeo-ice streams Livingstone, Stephen J. Ó Cofaigh, Colm Stokes, Chris R. Hillenbrand, Claus-Dieter Vieli, Andreas Jamieson, Stewart S.R. 2012 http://nora.nerc.ac.uk/id/eprint/17944/ http://www.sciencedirect.com/science/article/pii/S0012825211001620 unknown Elsevier Livingstone, Stephen J.; Ó Cofaigh, Colm; Stokes, Chris R.; Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Vieli, Andreas; Jamieson, Stewart S.R. 2012 Antarctic palaeo-ice streams. Earth-Science Reviews, 111 (1-2). 90-128. https://doi.org/10.1016/j.earscirev.2011.10.003 <https://doi.org/10.1016/j.earscirev.2011.10.003> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1016/j.earscirev.2011.10.003 2023-02-04T19:31:25Z We review the geomorphological, sedimentological and chronological evidence for palaeo-icestreams 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-icestreams, their basal characteristics and minimum ages for their retreat following the Last Glacial Maximum (LGM) is also provided. Antarcticpalaeo-icestreams 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-icestreams 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 AntarcticIce Sheet since the LGM is characterised by considerable asynchroneity, with individual icestreams exhibiting different retreat histories. This variability allows Antarcticpalaeo-icestreams 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 icestream 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 icestream will modulate the precise timing and rate of retreat through time. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Earth-Science Reviews 111 1-2 90 128 |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
We review the geomorphological, sedimentological and chronological evidence for palaeo-icestreams 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-icestreams, their basal characteristics and minimum ages for their retreat following the Last Glacial Maximum (LGM) is also provided. Antarcticpalaeo-icestreams 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-icestreams 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 AntarcticIce Sheet since the LGM is characterised by considerable asynchroneity, with individual icestreams exhibiting different retreat histories. This variability allows Antarcticpalaeo-icestreams 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 icestream 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 icestream will modulate the precise timing and rate of retreat through time. |
format |
Article in Journal/Newspaper |
author |
Livingstone, Stephen J. Ó Cofaigh, Colm Stokes, Chris R. Hillenbrand, Claus-Dieter Vieli, Andreas Jamieson, Stewart S.R. |
spellingShingle |
Livingstone, Stephen J. Ó Cofaigh, Colm Stokes, Chris R. Hillenbrand, Claus-Dieter Vieli, Andreas Jamieson, Stewart S.R. Antarctic palaeo-ice streams |
author_facet |
Livingstone, Stephen J. Ó Cofaigh, Colm 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 |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/17944/ http://www.sciencedirect.com/science/article/pii/S0012825211001620 |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica |
op_relation |
Livingstone, Stephen J.; Ó Cofaigh, Colm; Stokes, Chris R.; Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Vieli, Andreas; Jamieson, Stewart S.R. 2012 Antarctic palaeo-ice streams. Earth-Science Reviews, 111 (1-2). 90-128. https://doi.org/10.1016/j.earscirev.2011.10.003 <https://doi.org/10.1016/j.earscirev.2011.10.003> |
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 |
_version_ |
1766216504296079360 |