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: | http://nora.nerc.ac.uk/id/eprint/516579/ https://nora.nerc.ac.uk/id/eprint/516579/1/ncomms14798.pdf https://doi.org/10.1038/ncomms14798 |
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ftnerc:oai:nora.nerc.ac.uk:516579 2023-05-15T13:49:34+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 2017-03-17 text http://nora.nerc.ac.uk/id/eprint/516579/ https://nora.nerc.ac.uk/id/eprint/516579/1/ncomms14798.pdf https://doi.org/10.1038/ncomms14798 en eng Macmillan Publishers Ltd https://nora.nerc.ac.uk/id/eprint/516579/1/ncomms14798.pdf Graham, Alastair G. C.; Kuhn, Gerhard; Meisel, Ove; Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Hodgson, Dominic A. orcid:0000-0002-3841-3746 Ehrmann, Werner; Wacker, Lukas; Wintersteller, Paul; dos Santos Ferreira, Christian; Römer, Miriam; White, Duanne; Bohrmann, Gerhard. 2017 Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation. Nature Communications, 8, 14798. 15, pp. https://doi.org/10.1038/ncomms14798 <https://doi.org/10.1038/ncomms14798> cc_by_4 CC-BY Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1038/ncomms14798 2023-02-04T19:44:39Z 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 Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Nature Communications 8 1 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
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 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 |
Macmillan Publishers Ltd |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/516579/ https://nora.nerc.ac.uk/id/eprint/516579/1/ncomms14798.pdf https://doi.org/10.1038/ncomms14798 |
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_relation |
https://nora.nerc.ac.uk/id/eprint/516579/1/ncomms14798.pdf Graham, Alastair G. C.; Kuhn, Gerhard; Meisel, Ove; Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Hodgson, Dominic A. orcid:0000-0002-3841-3746 Ehrmann, Werner; Wacker, Lukas; Wintersteller, Paul; dos Santos Ferreira, Christian; Römer, Miriam; White, Duanne; Bohrmann, Gerhard. 2017 Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation. Nature Communications, 8, 14798. 15, pp. https://doi.org/10.1038/ncomms14798 <https://doi.org/10.1038/ncomms14798> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/ncomms14798 |
container_title |
Nature Communications |
container_volume |
8 |
container_issue |
1 |
_version_ |
1766251653506269184 |