Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum
The East Antarctic Ice Sheet (EAIS) is the largest continental ice mass on Earth, and documenting its evolution since the Last Glacial Maximum (LGM) is important for understanding its present-day and future behaviour. As part of a community effort, we review geological evidence from East Antarctica...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | https://biblio.ugent.be/publication/5767317 http://hdl.handle.net/1854/LU-5767317 https://doi.org/10.1016/j.quascirev.2013.07.024 https://biblio.ugent.be/publication/5767317/file/5767932 |
id |
ftunivgent:oai:archive.ugent.be:5767317 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences CONTINENTAL-SHELF VESTFOLD-HILLS EPICA DOME-C WILKES LAND MARGIN PRINCE-CHARLES MOUNTAINS SOUTHERN WINDMILL ISLANDS PLEISTOCENE-HOLOCENE RETREAT LUTZOW-HOLM BAY SEA-LEVEL CHANGE STOMACH OIL DEPOSITS Sea level rise Ice sheet Last Glacial Maximum Antarctica |
spellingShingle |
Earth and Environmental Sciences CONTINENTAL-SHELF VESTFOLD-HILLS EPICA DOME-C WILKES LAND MARGIN PRINCE-CHARLES MOUNTAINS SOUTHERN WINDMILL ISLANDS PLEISTOCENE-HOLOCENE RETREAT LUTZOW-HOLM BAY SEA-LEVEL CHANGE STOMACH OIL DEPOSITS Sea level rise Ice sheet Last Glacial Maximum Antarctica Mackintosh, Andrew N Verleyen, Elie O'Brien, Philip E White, Duanne A Jones, R Selwyn McKay, Robert Dunbar, Robert Gore, Damian B Fink, David Post, Alexandra L Miura, Hideki Leventer, Amy Goodwin, Ian Hodgson, Dominic A Lilly, Katherine Crosta, Xavier Golledge, Nicholas R Wagner, Bernd Berg, Sonja van Ommen, Tas Zwartz, Dan Roberts, Stephen J Vyverman, Wim Masse, Guillaume Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
topic_facet |
Earth and Environmental Sciences CONTINENTAL-SHELF VESTFOLD-HILLS EPICA DOME-C WILKES LAND MARGIN PRINCE-CHARLES MOUNTAINS SOUTHERN WINDMILL ISLANDS PLEISTOCENE-HOLOCENE RETREAT LUTZOW-HOLM BAY SEA-LEVEL CHANGE STOMACH OIL DEPOSITS Sea level rise Ice sheet Last Glacial Maximum Antarctica |
description |
The East Antarctic Ice Sheet (EAIS) is the largest continental ice mass on Earth, and documenting its evolution since the Last Glacial Maximum (LGM) is important for understanding its present-day and future behaviour. As part of a community effort, we review geological evidence from East Antarctica that constrains the ice sheet history throughout this period (similar to 30,000 years ago to present). This includes terrestrial cosmogenic nuclide dates from previously glaciated regions, C-14 chronologies from glacial and post-glacial deposits onshore and on the continental shelf, and ice sheet thickness changes inferred from ice cores and continental-scale ice sheet models. We also include new C-14 dates from the George V Land Terre Adelie Coast shelf. We show that the EAIS advanced to the continental shelf margin in some parts of East Antarctica, and that the ice sheet characteristically thickened by 300-400 m near the present-day coastline at these sites. This advance was associated with the formation of low-gradient ice streams that grounded at depths of >1 km below sea level on the inner continental shelf. The Lambert/Amery system thickened by a greater amount (800 m) near its present-day grounding zone, but did not advance beyond the inner continental shelf. At other sites in coastal East Antarctica (e.g. Bunger Hills, Larsemann Hills), very little change in the ice sheet margin occurred at the LGM, perhaps because ice streams accommodated any excess ice build up, leaving adjacent, ice-free areas relatively unaffected. Evidence from nunataks indicates that the amount of ice sheet thickening diminished inland at the LGM, an observation supported by ice cores, which suggest that interior ice sheet domes were similar to 100 m lower than present at this time. Ice sheet recession may have started similar to 18,000 years ago in the Lambert/Amery glacial system, and by similar to 14,000 years ago in Mac.Robertson Land. These early pulses of deglaciation may have been responses to abrupt sea-level rise events such ... |
format |
Article in Journal/Newspaper |
author |
Mackintosh, Andrew N Verleyen, Elie O'Brien, Philip E White, Duanne A Jones, R Selwyn McKay, Robert Dunbar, Robert Gore, Damian B Fink, David Post, Alexandra L Miura, Hideki Leventer, Amy Goodwin, Ian Hodgson, Dominic A Lilly, Katherine Crosta, Xavier Golledge, Nicholas R Wagner, Bernd Berg, Sonja van Ommen, Tas Zwartz, Dan Roberts, Stephen J Vyverman, Wim Masse, Guillaume |
author_facet |
Mackintosh, Andrew N Verleyen, Elie O'Brien, Philip E White, Duanne A Jones, R Selwyn McKay, Robert Dunbar, Robert Gore, Damian B Fink, David Post, Alexandra L Miura, Hideki Leventer, Amy Goodwin, Ian Hodgson, Dominic A Lilly, Katherine Crosta, Xavier Golledge, Nicholas R Wagner, Bernd Berg, Sonja van Ommen, Tas Zwartz, Dan Roberts, Stephen J Vyverman, Wim Masse, Guillaume |
author_sort |
Mackintosh, Andrew N |
title |
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
title_short |
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
title_full |
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
title_fullStr |
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
title_full_unstemmed |
Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum |
title_sort |
retreat history of the east antarctic ice sheet since the last glacial maximum |
publishDate |
2014 |
url |
https://biblio.ugent.be/publication/5767317 http://hdl.handle.net/1854/LU-5767317 https://doi.org/10.1016/j.quascirev.2013.07.024 https://biblio.ugent.be/publication/5767317/file/5767932 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(110.417,110.417,-66.350,-66.350) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(100.883,100.883,-66.167,-66.167) ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(65.000,65.000,-70.000,-70.000) |
geographic |
Antarctic East Antarctica Vestfold Hills East Antarctic Ice Sheet Vestfold Wilkes Land Amery Windmill Islands Prince Charles Mountains Larsemann Hills Bunger Hills George V Land Mac.Robertson Land |
geographic_facet |
Antarctic East Antarctica Vestfold Hills East Antarctic Ice Sheet Vestfold Wilkes Land Amery Windmill Islands Prince Charles Mountains Larsemann Hills Bunger Hills George V Land Mac.Robertson Land |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA George V Land Ice Sheet Mac.Robertson Land Prince Charles Mountains Wilkes Land Windmill Islands |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA George V Land Ice Sheet Mac.Robertson Land Prince Charles Mountains Wilkes Land Windmill Islands |
op_source |
QUATERNARY SCIENCE REVIEWS ISSN: 0277-3791 |
op_relation |
https://biblio.ugent.be/publication/5767317 http://hdl.handle.net/1854/LU-5767317 http://dx.doi.org/10.1016/j.quascirev.2013.07.024 https://biblio.ugent.be/publication/5767317/file/5767932 |
op_rights |
No license (in copyright) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2013.07.024 |
container_title |
Quaternary Science Reviews |
container_volume |
100 |
container_start_page |
10 |
op_container_end_page |
30 |
_version_ |
1768375359800082432 |
spelling |
ftunivgent:oai:archive.ugent.be:5767317 2023-06-11T04:05:25+02:00 Retreat history of the East Antarctic Ice Sheet since the Last Glacial Maximum Mackintosh, Andrew N Verleyen, Elie O'Brien, Philip E White, Duanne A Jones, R Selwyn McKay, Robert Dunbar, Robert Gore, Damian B Fink, David Post, Alexandra L Miura, Hideki Leventer, Amy Goodwin, Ian Hodgson, Dominic A Lilly, Katherine Crosta, Xavier Golledge, Nicholas R Wagner, Bernd Berg, Sonja van Ommen, Tas Zwartz, Dan Roberts, Stephen J Vyverman, Wim Masse, Guillaume 2014 application/pdf https://biblio.ugent.be/publication/5767317 http://hdl.handle.net/1854/LU-5767317 https://doi.org/10.1016/j.quascirev.2013.07.024 https://biblio.ugent.be/publication/5767317/file/5767932 eng eng https://biblio.ugent.be/publication/5767317 http://hdl.handle.net/1854/LU-5767317 http://dx.doi.org/10.1016/j.quascirev.2013.07.024 https://biblio.ugent.be/publication/5767317/file/5767932 No license (in copyright) info:eu-repo/semantics/openAccess QUATERNARY SCIENCE REVIEWS ISSN: 0277-3791 Earth and Environmental Sciences CONTINENTAL-SHELF VESTFOLD-HILLS EPICA DOME-C WILKES LAND MARGIN PRINCE-CHARLES MOUNTAINS SOUTHERN WINDMILL ISLANDS PLEISTOCENE-HOLOCENE RETREAT LUTZOW-HOLM BAY SEA-LEVEL CHANGE STOMACH OIL DEPOSITS Sea level rise Ice sheet Last Glacial Maximum Antarctica journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftunivgent https://doi.org/10.1016/j.quascirev.2013.07.024 2023-05-10T22:25:45Z The East Antarctic Ice Sheet (EAIS) is the largest continental ice mass on Earth, and documenting its evolution since the Last Glacial Maximum (LGM) is important for understanding its present-day and future behaviour. As part of a community effort, we review geological evidence from East Antarctica that constrains the ice sheet history throughout this period (similar to 30,000 years ago to present). This includes terrestrial cosmogenic nuclide dates from previously glaciated regions, C-14 chronologies from glacial and post-glacial deposits onshore and on the continental shelf, and ice sheet thickness changes inferred from ice cores and continental-scale ice sheet models. We also include new C-14 dates from the George V Land Terre Adelie Coast shelf. We show that the EAIS advanced to the continental shelf margin in some parts of East Antarctica, and that the ice sheet characteristically thickened by 300-400 m near the present-day coastline at these sites. This advance was associated with the formation of low-gradient ice streams that grounded at depths of >1 km below sea level on the inner continental shelf. The Lambert/Amery system thickened by a greater amount (800 m) near its present-day grounding zone, but did not advance beyond the inner continental shelf. At other sites in coastal East Antarctica (e.g. Bunger Hills, Larsemann Hills), very little change in the ice sheet margin occurred at the LGM, perhaps because ice streams accommodated any excess ice build up, leaving adjacent, ice-free areas relatively unaffected. Evidence from nunataks indicates that the amount of ice sheet thickening diminished inland at the LGM, an observation supported by ice cores, which suggest that interior ice sheet domes were similar to 100 m lower than present at this time. Ice sheet recession may have started similar to 18,000 years ago in the Lambert/Amery glacial system, and by similar to 14,000 years ago in Mac.Robertson Land. These early pulses of deglaciation may have been responses to abrupt sea-level rise events such ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA George V Land Ice Sheet Mac.Robertson Land Prince Charles Mountains Wilkes Land Windmill Islands Ghent University Academic Bibliography Antarctic East Antarctica Vestfold Hills East Antarctic Ice Sheet Vestfold Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Windmill Islands ENVELOPE(110.417,110.417,-66.350,-66.350) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Bunger Hills ENVELOPE(100.883,100.883,-66.167,-66.167) George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Mac.Robertson Land ENVELOPE(65.000,65.000,-70.000,-70.000) Quaternary Science Reviews 100 10 30 |