Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns
Ellsworth Subglacial Lake, first observed in airborne radio echo sounding data acquired in 1978, is located within a long, deep subglacial trough within the Ellsworth Subglacial Highlands of West Antarctica. Geophysical surveys have characterized the lake, its subglacial catchment, and the thickness...
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American Geophysical Union
2011
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ftnerc:oai:nora.nerc.ac.uk:17085 2023-05-15T13:45:11+02:00 Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns Ross, N. Siegert, M.J. Rivera, A. Bentley, M.J. Blake, David Capper, Linda Clarke, Rachel Cockell, C.S. Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, H. Maher, B. Makinson, Keith Mowlem, M. Parnell, J. Pearce, David Priscu, J. Smith, Andy Tait, Andrew Tranter, M. Wadham, J.L. Whalley, W.B. Woodward, J. Siegert, Martin J Kennicutt, Mahlon C., II Bindschadler, Robert A. 2011 http://nora.nerc.ac.uk/id/eprint/17085/ http://www.agu.org/books/gm/v192/ unknown American Geophysical Union Ross, N.; Siegert, M.J.; Rivera, A.; Bentley, M.J.; Blake, David; Capper, Linda; Clarke, Rachel; Cockell, C.S.; Corr, Hugh; Harris, W.; Hill, Christopher; Hindmarsh, Richard orcid:0000-0003-1633-2416 Hodgson, Dominic orcid:0000-0002-3841-3746 King, Edward orcid:0000-0003-3793-3915 Lamb, H.; Maher, B.; Makinson, Keith orcid:0000-0002-5791-1767 Mowlem, M.; Parnell, J.; Pearce, David orcid:0000-0001-5292-4596 Priscu, J.; Smith, Andy orcid:0000-0001-8577-482X Tait, Andrew; Tranter, M.; Wadham, J.L.; Whalley, W.B.; Woodward, J. 2011 Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns. In: Siegert, Martin J; Kennicutt, Mahlon C., II; Bindschadler, Robert A., (eds.) Antarctic Subglacial Aquatic Environments. American Geophysical Union, 221-233. Publication - Book Section NonPeerReviewed 2011 ftnerc 2023-02-04T19:30:57Z Ellsworth Subglacial Lake, first observed in airborne radio echo sounding data acquired in 1978, is located within a long, deep subglacial trough within the Ellsworth Subglacial Highlands of West Antarctica. Geophysical surveys have characterized the lake, its subglacial catchment, and the thickness, structure, and flow of the overlying ice sheet. Covering 28.9 km2, Ellsworth Subglacial Lake is located below 2.9 to 3.3 km of ice at depths of −1361 to −1030 m. Seismic reflection data have shown the lake to be up to 156 m deep and underlain by unconsolidated sediments. Ice sheet flow over the lake is characterized by low velocities (<6 m yr−1), flow convergence, and longitudinal extension. The lake appears to be in steady state, although the hydrological balance may vary over glacial-interglacial cycles. Direct access, measurement, and sampling of Ellsworth Subglacial Lake are planned for the 2012/2013 Antarctic field season. The aims of this access experiment are to determine (1) the presence, character, and maintenance of microbial life in Antarctic subglacial lakes and (2) the Quaternary history of the West Antarctic ice sheet. Geophysical data have been used to define a preferred lake access site. The factors that make this location suitable for exploration are (1) a relatively thin overlying ice column (∼3.1 km), (2) a significant measured water depth (∼143 m), (3) >2 m of sediment below the lake floor, (4) water circulation modeling suggesting a melting ice-water interface, and (5) coring that can target the deepest point of the lake floor away from marginal, localized sediment sources. Book Part Antarc* Antarctic Antarctica Ice Sheet West Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Ellsworth Subglacial Highlands ENVELOPE(-94.000,-94.000,-80.500,-80.500) Ellsworth Subglacial Lake ENVELOPE(-90.500,-90.500,-79.000,-79.000) West Antarctic Ice Sheet West Antarctica |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Ellsworth Subglacial Lake, first observed in airborne radio echo sounding data acquired in 1978, is located within a long, deep subglacial trough within the Ellsworth Subglacial Highlands of West Antarctica. Geophysical surveys have characterized the lake, its subglacial catchment, and the thickness, structure, and flow of the overlying ice sheet. Covering 28.9 km2, Ellsworth Subglacial Lake is located below 2.9 to 3.3 km of ice at depths of −1361 to −1030 m. Seismic reflection data have shown the lake to be up to 156 m deep and underlain by unconsolidated sediments. Ice sheet flow over the lake is characterized by low velocities (<6 m yr−1), flow convergence, and longitudinal extension. The lake appears to be in steady state, although the hydrological balance may vary over glacial-interglacial cycles. Direct access, measurement, and sampling of Ellsworth Subglacial Lake are planned for the 2012/2013 Antarctic field season. The aims of this access experiment are to determine (1) the presence, character, and maintenance of microbial life in Antarctic subglacial lakes and (2) the Quaternary history of the West Antarctic ice sheet. Geophysical data have been used to define a preferred lake access site. The factors that make this location suitable for exploration are (1) a relatively thin overlying ice column (∼3.1 km), (2) a significant measured water depth (∼143 m), (3) >2 m of sediment below the lake floor, (4) water circulation modeling suggesting a melting ice-water interface, and (5) coring that can target the deepest point of the lake floor away from marginal, localized sediment sources. |
author2 |
Siegert, Martin J Kennicutt, Mahlon C., II Bindschadler, Robert A. |
format |
Book Part |
author |
Ross, N. Siegert, M.J. Rivera, A. Bentley, M.J. Blake, David Capper, Linda Clarke, Rachel Cockell, C.S. Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, H. Maher, B. Makinson, Keith Mowlem, M. Parnell, J. Pearce, David Priscu, J. Smith, Andy Tait, Andrew Tranter, M. Wadham, J.L. Whalley, W.B. Woodward, J. |
spellingShingle |
Ross, N. Siegert, M.J. Rivera, A. Bentley, M.J. Blake, David Capper, Linda Clarke, Rachel Cockell, C.S. Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, H. Maher, B. Makinson, Keith Mowlem, M. Parnell, J. Pearce, David Priscu, J. Smith, Andy Tait, Andrew Tranter, M. Wadham, J.L. Whalley, W.B. Woodward, J. Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
author_facet |
Ross, N. Siegert, M.J. Rivera, A. Bentley, M.J. Blake, David Capper, Linda Clarke, Rachel Cockell, C.S. Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, H. Maher, B. Makinson, Keith Mowlem, M. Parnell, J. Pearce, David Priscu, J. Smith, Andy Tait, Andrew Tranter, M. Wadham, J.L. Whalley, W.B. Woodward, J. |
author_sort |
Ross, N. |
title |
Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
title_short |
Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
title_full |
Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
title_fullStr |
Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
title_full_unstemmed |
Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
title_sort |
ellsworth subglacial lake, west antarctica: a review of its history and recent field campaigns |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/17085/ http://www.agu.org/books/gm/v192/ |
long_lat |
ENVELOPE(-94.000,-94.000,-80.500,-80.500) ENVELOPE(-90.500,-90.500,-79.000,-79.000) |
geographic |
Antarctic Ellsworth Subglacial Highlands Ellsworth Subglacial Lake West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Ellsworth Subglacial Highlands Ellsworth Subglacial Lake West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
Ross, N.; Siegert, M.J.; Rivera, A.; Bentley, M.J.; Blake, David; Capper, Linda; Clarke, Rachel; Cockell, C.S.; Corr, Hugh; Harris, W.; Hill, Christopher; Hindmarsh, Richard orcid:0000-0003-1633-2416 Hodgson, Dominic orcid:0000-0002-3841-3746 King, Edward orcid:0000-0003-3793-3915 Lamb, H.; Maher, B.; Makinson, Keith orcid:0000-0002-5791-1767 Mowlem, M.; Parnell, J.; Pearce, David orcid:0000-0001-5292-4596 Priscu, J.; Smith, Andy orcid:0000-0001-8577-482X Tait, Andrew; Tranter, M.; Wadham, J.L.; Whalley, W.B.; Woodward, J. 2011 Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns. In: Siegert, Martin J; Kennicutt, Mahlon C., II; Bindschadler, Robert A., (eds.) Antarctic Subglacial Aquatic Environments. American Geophysical Union, 221-233. |
_version_ |
1766216235486281728 |