Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle
A major glacial trough ("Belgica Trough") on the continental shelf in the southern Bellingshausen Sea acted as an important outlet for ice draining the West Antarctic Ice Sheet during the Last Glacial Maximum (LGM). Mega- scale glacial lineations, drumlins and grounding-zone wedges indicat...
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2007
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ftnerc:oai:nora.nerc.ac.uk:13757 2023-05-15T13:45:11+02:00 Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle Hillenbrand, Claus-Dieter Benetti, S. Ehrmann, W. Larter, Robert D. Ó Cofaigh, C. Dowdeswell, J.A. Grobe, H. Graham, Alastair G.C. Cooper, A.K. Raymond, C.R. 2007 http://nora.nerc.ac.uk/id/eprint/13757/ http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea150.pdf unknown National Academy Press Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Benetti, S.; Ehrmann, W.; Larter, Robert D. orcid:0000-0002-8414-7389 Ó Cofaigh, C.; Dowdeswell, J.A.; Grobe, H.; Graham, Alastair G.C. 2007 Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle. In: Cooper, A.K.; Raymond, C.R., (eds.) Antarctica: a keystone in a changing world. Online proceedings of the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, California, August 26 - September 1, 2007. National Academy Press, 4pp. (U.S. Geological Survey Open-File Report, 2007-1047). Glaciology Publication - Book Section NonPeerReviewed 2007 ftnerc 2023-02-04T19:28:47Z A major glacial trough ("Belgica Trough") on the continental shelf in the southern Bellingshausen Sea acted as an important outlet for ice draining the West Antarctic Ice Sheet during the Last Glacial Maximum (LGM). Mega- scale glacial lineations, drumlins and grounding-zone wedges indicate that Belgica Trough represents the former pathway of a grounded ice stream, which advanced to the shelf break during the LGM and was fed by ice draining through Eltanin Bay and Ronne Entrance. Here we present the preliminary results of sedimentological investigations carried out on 26 sediment cores recovered from the shelf and slope. This unique dataset allows the identification of various facies types that reflect the different phases of grounded ice advance, retreat, and post-glacial onset of seasonal open-water conditions. We will reconstruct the complex processes of erosion, transport and (re-)deposition controlling sedimentation on the margin and the timing of ice-sheet retreat from the shelf. Book Part Antarc* Antarctic Bellingshausen Sea Ice Sheet Ronne Entrance Natural Environment Research Council: NERC Open Research Archive Antarctic West Antarctic Ice Sheet Bellingshausen Sea Eltanin Bay ENVELOPE(-82.000,-82.000,-73.667,-73.667) Ronne Entrance ENVELOPE(-74.500,-74.500,-72.583,-72.583) |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology |
spellingShingle |
Glaciology Hillenbrand, Claus-Dieter Benetti, S. Ehrmann, W. Larter, Robert D. Ó Cofaigh, C. Dowdeswell, J.A. Grobe, H. Graham, Alastair G.C. Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
topic_facet |
Glaciology |
description |
A major glacial trough ("Belgica Trough") on the continental shelf in the southern Bellingshausen Sea acted as an important outlet for ice draining the West Antarctic Ice Sheet during the Last Glacial Maximum (LGM). Mega- scale glacial lineations, drumlins and grounding-zone wedges indicate that Belgica Trough represents the former pathway of a grounded ice stream, which advanced to the shelf break during the LGM and was fed by ice draining through Eltanin Bay and Ronne Entrance. Here we present the preliminary results of sedimentological investigations carried out on 26 sediment cores recovered from the shelf and slope. This unique dataset allows the identification of various facies types that reflect the different phases of grounded ice advance, retreat, and post-glacial onset of seasonal open-water conditions. We will reconstruct the complex processes of erosion, transport and (re-)deposition controlling sedimentation on the margin and the timing of ice-sheet retreat from the shelf. |
author2 |
Cooper, A.K. Raymond, C.R. |
format |
Book Part |
author |
Hillenbrand, Claus-Dieter Benetti, S. Ehrmann, W. Larter, Robert D. Ó Cofaigh, C. Dowdeswell, J.A. Grobe, H. Graham, Alastair G.C. |
author_facet |
Hillenbrand, Claus-Dieter Benetti, S. Ehrmann, W. Larter, Robert D. Ó Cofaigh, C. Dowdeswell, J.A. Grobe, H. Graham, Alastair G.C. |
author_sort |
Hillenbrand, Claus-Dieter |
title |
Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
title_short |
Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
title_full |
Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
title_fullStr |
Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
title_full_unstemmed |
Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle |
title_sort |
glacial dynamics of the west antarctic ice sheet in the southern bellingshausen sea during the last glacial cycle |
publisher |
National Academy Press |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/13757/ http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea150.pdf |
long_lat |
ENVELOPE(-82.000,-82.000,-73.667,-73.667) ENVELOPE(-74.500,-74.500,-72.583,-72.583) |
geographic |
Antarctic West Antarctic Ice Sheet Bellingshausen Sea Eltanin Bay Ronne Entrance |
geographic_facet |
Antarctic West Antarctic Ice Sheet Bellingshausen Sea Eltanin Bay Ronne Entrance |
genre |
Antarc* Antarctic Bellingshausen Sea Ice Sheet Ronne Entrance |
genre_facet |
Antarc* Antarctic Bellingshausen Sea Ice Sheet Ronne Entrance |
op_relation |
Hillenbrand, Claus-Dieter orcid:0000-0003-0240-7317 Benetti, S.; Ehrmann, W.; Larter, Robert D. orcid:0000-0002-8414-7389 Ó Cofaigh, C.; Dowdeswell, J.A.; Grobe, H.; Graham, Alastair G.C. 2007 Glacial dynamics of the West Antarctic Ice Sheet in the southern Bellingshausen Sea during the last glacial cycle. In: Cooper, A.K.; Raymond, C.R., (eds.) Antarctica: a keystone in a changing world. Online proceedings of the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, California, August 26 - September 1, 2007. National Academy Press, 4pp. (U.S. Geological Survey Open-File Report, 2007-1047). |
_version_ |
1766215617379041280 |