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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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/130185 2023-08-20T04:02:30+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 Dos Santos Ferreira, Christian Römer, Miriam White, Duanne Bohrmann, Gerhard 2017 application/application/pdf https://hdl.handle.net/20.500.11850/130185 https://doi.org/10.3929/ethz-b-000130185 en eng Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms14798 info:eu-repo/semantics/altIdentifier/wos/000396402600001 http://hdl.handle.net/20.500.11850/130185 doi:10.3929/ethz-b-000130185 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International Nature Communications, 8 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftethz https://doi.org/20.500.11850/13018510.3929/ethz-b-00013018510.1038/ncomms14798 2023-07-30T23:48:37Z 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. ISSN:2041-1723 Article in Journal/Newspaper Antarc* Antarctic Southern Ocean ETH Zürich Research Collection Antarctic Southern Ocean The Antarctic |
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ETH Zürich Research Collection |
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ftethz |
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. ISSN:2041-1723 |
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 Dos Santos Ferreira, Christian Römer, 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 Dos Santos Ferreira, Christian Römer, 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 Dos Santos Ferreira, Christian Römer, 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 |
publisher |
Nature |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.11850/130185 https://doi.org/10.3929/ethz-b-000130185 |
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 |
Nature Communications, 8 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms14798 info:eu-repo/semantics/altIdentifier/wos/000396402600001 http://hdl.handle.net/20.500.11850/130185 doi:10.3929/ethz-b-000130185 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/13018510.3929/ethz-b-00013018510.1038/ncomms14798 |
_version_ |
1774712969567928320 |