Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation
The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of...
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Online Access: | https://researchprofiles.canberra.edu.au/en/publications/d4e0f539-b2a0-43c4-af8c-d8483ffdf560 https://doi.org/10.1038/ncomms14798 https://researchsystem.canberra.edu.au/ws/files/8304132/1324879.pdf http://www.scopus.com/inward/record.url?scp=85015666371&partnerID=8YFLogxK http://www.mendeley.com/research/major-advance-south-georgia-glaciers-during-antarctic-cold-reversal-following-extensive-subantarctic |
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ftcanberrauncris:oai:pure.atira.dk:publications/d4e0f539-b2a0-43c4-af8c-d8483ffdf560 2023-05-15T13:38:46+02:00 Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation Graham, Alastair G C Kuhn, Gerhard Meisel, Ove Hillenbrand, Claus Dieter Hodgson, Dominic A. Ehrmann, Werner Wacker, Lukas Wintersteller, Paul Ferreira, Christian Romer, Miriam WHITE, Duanne Bohrmann, Gerhard 2017 application/pdf https://researchprofiles.canberra.edu.au/en/publications/d4e0f539-b2a0-43c4-af8c-d8483ffdf560 https://doi.org/10.1038/ncomms14798 https://researchsystem.canberra.edu.au/ws/files/8304132/1324879.pdf http://www.scopus.com/inward/record.url?scp=85015666371&partnerID=8YFLogxK http://www.mendeley.com/research/major-advance-south-georgia-glaciers-during-antarctic-cold-reversal-following-extensive-subantarctic eng eng info:eu-repo/semantics/openAccess Graham , A G C , Kuhn , G , Meisel , O , Hillenbrand , C D , Hodgson , D A , Ehrmann , W , Wacker , L , Wintersteller , P , Ferreira , C , Romer , M , WHITE , D & Bohrmann , G 2017 , ' Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation ' , Nature Communications , vol. 8 , 14798 , pp. 1-15 . https://doi.org/10.1038/ncomms14798 article 2017 ftcanberrauncris https://doi.org/10.1038/ncomms14798 2022-10-31T06:45:21Z The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean University of Canberra Research Portal Antarctic Southern Ocean The Antarctic Nature Communications 8 1 |
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Open Polar |
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University of Canberra Research Portal |
op_collection_id |
ftcanberrauncris |
language |
English |
description |
The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies. |
format |
Article in Journal/Newspaper |
author |
Graham, Alastair G C Kuhn, Gerhard Meisel, Ove Hillenbrand, Claus Dieter Hodgson, Dominic A. Ehrmann, Werner Wacker, Lukas Wintersteller, Paul Ferreira, Christian Romer, Miriam WHITE, Duanne Bohrmann, Gerhard |
spellingShingle |
Graham, Alastair G C Kuhn, Gerhard Meisel, Ove Hillenbrand, Claus Dieter Hodgson, Dominic A. Ehrmann, Werner Wacker, Lukas Wintersteller, Paul Ferreira, Christian Romer, Miriam WHITE, Duanne Bohrmann, Gerhard Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
author_facet |
Graham, Alastair G C Kuhn, Gerhard Meisel, Ove Hillenbrand, Claus Dieter Hodgson, Dominic A. Ehrmann, Werner Wacker, Lukas Wintersteller, Paul Ferreira, Christian Romer, Miriam WHITE, Duanne Bohrmann, Gerhard |
author_sort |
Graham, Alastair G C |
title |
Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
title_short |
Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
title_full |
Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
title_fullStr |
Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
title_full_unstemmed |
Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation |
title_sort |
major advance of south georgia glaciers during the antarctic cold reversal following extensive sub-antarctic glaciation |
publishDate |
2017 |
url |
https://researchprofiles.canberra.edu.au/en/publications/d4e0f539-b2a0-43c4-af8c-d8483ffdf560 https://doi.org/10.1038/ncomms14798 https://researchsystem.canberra.edu.au/ws/files/8304132/1324879.pdf http://www.scopus.com/inward/record.url?scp=85015666371&partnerID=8YFLogxK http://www.mendeley.com/research/major-advance-south-georgia-glaciers-during-antarctic-cold-reversal-following-extensive-subantarctic |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Graham , A G C , Kuhn , G , Meisel , O , Hillenbrand , C D , Hodgson , D A , Ehrmann , W , Wacker , L , Wintersteller , P , Ferreira , C , Romer , M , WHITE , D & Bohrmann , G 2017 , ' Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation ' , Nature Communications , vol. 8 , 14798 , pp. 1-15 . https://doi.org/10.1038/ncomms14798 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/ncomms14798 |
container_title |
Nature Communications |
container_volume |
8 |
container_issue |
1 |
_version_ |
1766110960433496064 |