Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S)
The Antarctic Peninsula comprises a thin spine of mountains and islands presently covered by an ice sheet up to 500 m thick that drains eastward and westward via outlet glaciers (Davies et al. 2012). The peninsula has undergone recent rapid warming, resulting in the collapse of fringing ice shelves...
Published in: | Geological Society, London, Memoirs |
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Geological Society of London
2016
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515715/ https://doi.org/10.1144/M46.180 |
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ftnerc:oai:nora.nerc.ac.uk:515715 2023-05-15T13:49:33+02:00 Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) Livingstone, S. J. O Cofaigh, C. Hogan, K. A. Dowdeswell, J. A. Dowdeswell, J.A. Canals, M. Jakobsson, M. Todd, B.J. Dowdeswell, E.K. Hogan, K.A. 2016 http://nora.nerc.ac.uk/id/eprint/515715/ https://doi.org/10.1144/M46.180 unknown Geological Society of London Livingstone, S. J.; O Cofaigh, C.; Hogan, K. A. orcid:0000-0002-1256-8010 Dowdeswell, J. A. 2016 Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S). In: Dowdeswell, J.A.; Canals, M.; Jakobsson, M.; Todd, B.J.; Dowdeswell, E.K.; Hogan, K.A. orcid:0000-0002-1256-8010 , (eds.) Atlas of submarine glacial landforms: modern, Quaternary and ancient. London, Geological Society of London, 485-492. (Geological Society Memoir, 46, 46). Publication - Book Section PeerReviewed 2016 ftnerc https://doi.org/10.1144/M46.180 2023-02-04T19:44:13Z The Antarctic Peninsula comprises a thin spine of mountains and islands presently covered by an ice sheet up to 500 m thick that drains eastward and westward via outlet glaciers (Davies et al. 2012). The peninsula has undergone recent rapid warming, resulting in the collapse of fringing ice shelves and the retreat, thinning and acceleration of marine-terminating outlet glaciers (e.g. Pritchard & Vaughan 2007). At the Last Glacial Maximum (LGM), the ice sheet expanded to the continental shelf break around the peninsula, and was organized into a series of ice streams that drained along cross-shelf bathymetric troughs (Ó Cofaigh et al. 2014). Marguerite Bay is located on the west side of the Antarctic Peninsula, at about 66–70° S (Fig. 1). A 12–80 km wide and 370 km long trough extends across the bay from the northern terminus of George VI Ice Shelf to the continental shelf edge. Extensive marine-geophysical surveys of the trough reveal a suite of glacial landforms which record past flow of an ice stream which extended to the shelf edge at, or shortly after, the LGM. Subsequent retreat of the ice stream was underway by c. 14 ka ago and proceeded rapidly to the mid-shelf, where it slowed before accelerating once again to the inner shelf at c. 9 ka (Kilfeather et al. 2011). Book Part Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ice Stream A Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) George VI Ice Shelf ENVELOPE(-67.840,-67.840,-71.692,-71.692) Geological Society, London, Memoirs 46 1 485 492 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
The Antarctic Peninsula comprises a thin spine of mountains and islands presently covered by an ice sheet up to 500 m thick that drains eastward and westward via outlet glaciers (Davies et al. 2012). The peninsula has undergone recent rapid warming, resulting in the collapse of fringing ice shelves and the retreat, thinning and acceleration of marine-terminating outlet glaciers (e.g. Pritchard & Vaughan 2007). At the Last Glacial Maximum (LGM), the ice sheet expanded to the continental shelf break around the peninsula, and was organized into a series of ice streams that drained along cross-shelf bathymetric troughs (Ó Cofaigh et al. 2014). Marguerite Bay is located on the west side of the Antarctic Peninsula, at about 66–70° S (Fig. 1). A 12–80 km wide and 370 km long trough extends across the bay from the northern terminus of George VI Ice Shelf to the continental shelf edge. Extensive marine-geophysical surveys of the trough reveal a suite of glacial landforms which record past flow of an ice stream which extended to the shelf edge at, or shortly after, the LGM. Subsequent retreat of the ice stream was underway by c. 14 ka ago and proceeded rapidly to the mid-shelf, where it slowed before accelerating once again to the inner shelf at c. 9 ka (Kilfeather et al. 2011). |
author2 |
Dowdeswell, J.A. Canals, M. Jakobsson, M. Todd, B.J. Dowdeswell, E.K. Hogan, K.A. |
format |
Book Part |
author |
Livingstone, S. J. O Cofaigh, C. Hogan, K. A. Dowdeswell, J. A. |
spellingShingle |
Livingstone, S. J. O Cofaigh, C. Hogan, K. A. Dowdeswell, J. A. Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
author_facet |
Livingstone, S. J. O Cofaigh, C. Hogan, K. A. Dowdeswell, J. A. |
author_sort |
Livingstone, S. J. |
title |
Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
title_short |
Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
title_full |
Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
title_fullStr |
Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
title_full_unstemmed |
Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S) |
title_sort |
submarine glacial-landform distribution along an antarctic peninsula palaeo-ice stream: a shelf-slope transect through the marguerite trough system (66-70 s) |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
http://nora.nerc.ac.uk/id/eprint/515715/ https://doi.org/10.1144/M46.180 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) ENVELOPE(-67.840,-67.840,-71.692,-71.692) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Marguerite Marguerite Bay George VI Ice Shelf |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Marguerite Marguerite Bay George VI Ice Shelf |
genre |
Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ice Stream A |
genre_facet |
Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ice Stream A |
op_relation |
Livingstone, S. J.; O Cofaigh, C.; Hogan, K. A. orcid:0000-0002-1256-8010 Dowdeswell, J. A. 2016 Submarine glacial-landform distribution along an Antarctic Peninsula palaeo-ice stream: a shelf-slope transect through the Marguerite Trough system (66-70 S). In: Dowdeswell, J.A.; Canals, M.; Jakobsson, M.; Todd, B.J.; Dowdeswell, E.K.; Hogan, K.A. orcid:0000-0002-1256-8010 , (eds.) Atlas of submarine glacial landforms: modern, Quaternary and ancient. London, Geological Society of London, 485-492. (Geological Society Memoir, 46, 46). |
op_doi |
https://doi.org/10.1144/M46.180 |
container_title |
Geological Society, London, Memoirs |
container_volume |
46 |
container_issue |
1 |
container_start_page |
485 |
op_container_end_page |
492 |
_version_ |
1766251620634460160 |