Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach
We evaluate the opening of the Drake Passage (DP), between Antarctica and South America, and associated changes in ocean circulation as forcing factor for the onset of Antarctic glaciation near the Eocene–Oligocene transition (~ 34 million years ago). In this paper this hypothesis is tested through...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | https://epic.awi.de/id/eprint/31232/ http://www.sciencedirect.com/science/article/pii/S0031018212002271 https://hdl.handle.net/10013/epic.40054 |
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ftawi:oai:epic.awi.de:31232 2024-09-15T17:45:14+00:00 Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach Cristini, Luisa Grosfeld, Klaus Butzin, Martin Lohmann, Gerrit 2012-07-01 https://epic.awi.de/id/eprint/31232/ http://www.sciencedirect.com/science/article/pii/S0031018212002271 https://hdl.handle.net/10013/epic.40054 unknown Elsevier Cristini, L. orcid:0000-0003-4791-0776 , Grosfeld, K. orcid:0000-0001-5936-179X , Butzin, M. orcid:0000-0002-9275-7304 and Lohmann, G. orcid:0000-0003-2089-733X (2012) Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach , Palaeogeography, Palaeoclimatology, Palaeoecology, 339-34 , pp. 66-73 . doi:10.1016/j.palaeo.2012.04.023 <https://doi.org/10.1016/j.palaeo.2012.04.023> , hdl:10013/epic.40054 EPIC3Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 339-34, pp. 66-73 Article isiRev 2012 ftawi https://doi.org/10.1016/j.palaeo.2012.04.023 2024-06-24T04:05:07Z We evaluate the opening of the Drake Passage (DP), between Antarctica and South America, and associated changes in ocean circulation as forcing factor for the onset of Antarctic glaciation near the Eocene–Oligocene transition (~ 34 million years ago). In this paper this hypothesis is tested through sensitivity experiments, using numerical models for the global ocean and atmosphere and for the Antarctic Ice Sheet. The response of the Antarctic continent to the opening of the DP and to the establishment of the Antarctic Circumpolar Current is examined. Two different climate states are reproduced with ocean gateway configurations similar to the Late Eocene and to the Late Oligocene, before and after the opening of the DP. A reduced southward heat flux and a decrease of surface temperature are found in the Antarctic realm when the DP is open. A more massive ice sheet develops on the continent in case of DP open compared to the configuration with closed DP. Article in Journal/Newspaper Antarc* Antarctic Antarctica Drake Passage Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Palaeogeography, Palaeoclimatology, Palaeoecology 339-341 66 73 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
We evaluate the opening of the Drake Passage (DP), between Antarctica and South America, and associated changes in ocean circulation as forcing factor for the onset of Antarctic glaciation near the Eocene–Oligocene transition (~ 34 million years ago). In this paper this hypothesis is tested through sensitivity experiments, using numerical models for the global ocean and atmosphere and for the Antarctic Ice Sheet. The response of the Antarctic continent to the opening of the DP and to the establishment of the Antarctic Circumpolar Current is examined. Two different climate states are reproduced with ocean gateway configurations similar to the Late Eocene and to the Late Oligocene, before and after the opening of the DP. A reduced southward heat flux and a decrease of surface temperature are found in the Antarctic realm when the DP is open. A more massive ice sheet develops on the continent in case of DP open compared to the configuration with closed DP. |
format |
Article in Journal/Newspaper |
author |
Cristini, Luisa Grosfeld, Klaus Butzin, Martin Lohmann, Gerrit |
spellingShingle |
Cristini, Luisa Grosfeld, Klaus Butzin, Martin Lohmann, Gerrit Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
author_facet |
Cristini, Luisa Grosfeld, Klaus Butzin, Martin Lohmann, Gerrit |
author_sort |
Cristini, Luisa |
title |
Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
title_short |
Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
title_full |
Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
title_fullStr |
Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
title_full_unstemmed |
Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach |
title_sort |
influence of the opening of the drake passage on the cenozoic antarctic ice sheet: a modeling approach |
publisher |
Elsevier |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/31232/ http://www.sciencedirect.com/science/article/pii/S0031018212002271 https://hdl.handle.net/10013/epic.40054 |
genre |
Antarc* Antarctic Antarctica Drake Passage Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Drake Passage Ice Sheet |
op_source |
EPIC3Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 339-34, pp. 66-73 |
op_relation |
Cristini, L. orcid:0000-0003-4791-0776 , Grosfeld, K. orcid:0000-0001-5936-179X , Butzin, M. orcid:0000-0002-9275-7304 and Lohmann, G. orcid:0000-0003-2089-733X (2012) Influence of the opening of the Drake Passage on the Cenozoic Antarctic Ice Sheet: A modeling approach , Palaeogeography, Palaeoclimatology, Palaeoecology, 339-34 , pp. 66-73 . doi:10.1016/j.palaeo.2012.04.023 <https://doi.org/10.1016/j.palaeo.2012.04.023> , hdl:10013/epic.40054 |
op_doi |
https://doi.org/10.1016/j.palaeo.2012.04.023 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
339-341 |
container_start_page |
66 |
op_container_end_page |
73 |
_version_ |
1810492984597151744 |