Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet
Subglacial outburst floods at the margins of the Antarctic and Laurentide Ice Sheets have been linked to changes in global ocean circulation and climate. The impact of palaeo-hydrological systems beneath the East Antarctic Ice Sheet (EAIS) has, however, remained elusive. By analysing bed morphology...
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ftunivgenova:oai:iris.unige.it:11567/255677 2024-02-11T09:57:23+01:00 Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet JORDAN TA FERRACCIOLI F CORR H GRAHAM A ARMADILLO, EGIDIO BOZZO, EMANUELE Jordan, Ta Ferraccioli, F Corr, H Graham, A Armadillo, Egidio Bozzo, Emanuele 2010 STAMPA http://hdl.handle.net/11567/255677 https://doi.org/10.1111/j.1365-3121.2010.00944.x eng eng Blackwell Science Limited:PO Box 88, Oxford OX2 0NE United Kingdom:011 44 1865 776868, 011 44 1865 206038, EMAIL: journals.cs@blacksci.co.uk, INTERNET: http://www.blackwell-science.com, Fax: 011 44 1865 721205 info:eu-repo/semantics/altIdentifier/wos/WOS:000279750700006 volume:22-4 firstpage:283 lastpage:289 journal:TERRA NOVA http://hdl.handle.net/11567/255677 doi:10.1111/j.1365-3121.2010.00944.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955128887 info:eu-repo/semantics/article 2010 ftunivgenova https://doi.org/10.1111/j.1365-3121.2010.00944.x 2024-01-17T17:52:35Z Subglacial outburst floods at the margins of the Antarctic and Laurentide Ice Sheets have been linked to changes in global ocean circulation and climate. The impact of palaeo-hydrological systems beneath the East Antarctic Ice Sheet (EAIS) has, however, remained elusive. By analysing bed morphology in the Wilkes Subglacial Basin, we hypothesise the occurrence of a major palaeo-subglacial lake and associated outburst floods in the interior of East Antarctica. At 70 km wide and over 100 km long, the inferred area of outburst flooding is the most extensive in Antarctica, and the palaeo-subglacial lake from which the floods originated is the second largest after Lake Vostok. The scale of inferred outburst flooding is similar to mega-floods beneath the Laurentide Ice Sheet. We suggest that this major hydrological system developed during expansion of the EAIS in the middle Miocene and probably affected ice sheet stability, ocean circulation and climate evolution. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Università degli Studi di Genova: CINECA IRIS Antarctic The Antarctic East Antarctica East Antarctic Ice Sheet Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Wilkes Subglacial Basin ENVELOPE(145.000,145.000,-75.000,-75.000) Terra Nova no no |
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Open Polar |
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Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
Subglacial outburst floods at the margins of the Antarctic and Laurentide Ice Sheets have been linked to changes in global ocean circulation and climate. The impact of palaeo-hydrological systems beneath the East Antarctic Ice Sheet (EAIS) has, however, remained elusive. By analysing bed morphology in the Wilkes Subglacial Basin, we hypothesise the occurrence of a major palaeo-subglacial lake and associated outburst floods in the interior of East Antarctica. At 70 km wide and over 100 km long, the inferred area of outburst flooding is the most extensive in Antarctica, and the palaeo-subglacial lake from which the floods originated is the second largest after Lake Vostok. The scale of inferred outburst flooding is similar to mega-floods beneath the Laurentide Ice Sheet. We suggest that this major hydrological system developed during expansion of the EAIS in the middle Miocene and probably affected ice sheet stability, ocean circulation and climate evolution. |
author2 |
Jordan, Ta Ferraccioli, F Corr, H Graham, A Armadillo, Egidio Bozzo, Emanuele |
format |
Article in Journal/Newspaper |
author |
JORDAN TA FERRACCIOLI F CORR H GRAHAM A ARMADILLO, EGIDIO BOZZO, EMANUELE |
spellingShingle |
JORDAN TA FERRACCIOLI F CORR H GRAHAM A ARMADILLO, EGIDIO BOZZO, EMANUELE Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
author_facet |
JORDAN TA FERRACCIOLI F CORR H GRAHAM A ARMADILLO, EGIDIO BOZZO, EMANUELE |
author_sort |
JORDAN TA |
title |
Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
title_short |
Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
title_full |
Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
title_fullStr |
Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
title_full_unstemmed |
Hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the East Antarctic Ice Sheet |
title_sort |
hypothesis for mega-outburst flooding from a palaeo-subglacial lake beneath the east antarctic ice sheet |
publisher |
Blackwell Science Limited:PO Box 88, Oxford OX2 0NE United Kingdom:011 44 1865 776868, 011 44 1865 206038, EMAIL: journals.cs@blacksci.co.uk, INTERNET: http://www.blackwell-science.com, Fax: 011 44 1865 721205 |
publishDate |
2010 |
url |
http://hdl.handle.net/11567/255677 https://doi.org/10.1111/j.1365-3121.2010.00944.x |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) ENVELOPE(145.000,145.000,-75.000,-75.000) |
geographic |
Antarctic The Antarctic East Antarctica East Antarctic Ice Sheet Lake Vostok Wilkes Subglacial Basin |
geographic_facet |
Antarctic The Antarctic East Antarctica East Antarctic Ice Sheet Lake Vostok Wilkes Subglacial Basin |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000279750700006 volume:22-4 firstpage:283 lastpage:289 journal:TERRA NOVA http://hdl.handle.net/11567/255677 doi:10.1111/j.1365-3121.2010.00944.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955128887 |
op_doi |
https://doi.org/10.1111/j.1365-3121.2010.00944.x |
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Terra Nova |
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1790609675894390784 |