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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ftunivnorthumb:oai:nrl.northumbria.ac.uk:7073 2023-05-15T13:34:15+02:00 Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns Ross, Neil Siegert, Martin Rivera, Andrés Bentley, Michael Blake, David Capper, Linda Clarke, Rachel Cockell, Charles Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, Henry Maher, Barbara Makinson, Keith Mowlem, Matt Parnell, John Priscu, John Pearce, David Smith, Andrew Tait, Andrew Tranter, Martyn Wadham, Jemma Whalley, Brian Woodward, John Siegert, Martin Kennicutt, Mahlon Bindschadler, R. A. 2011-12 https://nrl.northumbria.ac.uk/id/eprint/7073/ https://doi.org/10.1029/2010GM000936 unknown American Geophysical Union Ross, Neil, Siegert, Martin, Rivera, Andrés, Bentley, Michael, Blake, David, Capper, Linda, Clarke, Rachel, Cockell, Charles, Corr, Hugh, Harris, W., Hill, Christopher, Hindmarsh, Richard, Hodgson, Dominic, King, Edward, Lamb, Henry, Maher, Barbara, Makinson, Keith, Mowlem, Matt, Parnell, John, Priscu, John, Pearce, David, Smith, Andrew, Tait, Andrew, Tranter, Martyn, Wadham, Jemma, Whalley, Brian and Woodward, John (2011) Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns. In: Antarctic Subglacial Aquatic Environments. Geophysical Monograph Series, 192 . American Geophysical Union, Washington, pp. 221-233. ISBN 978087590485, 9781118670354, 9781118671481 F800 Physical and Terrestrial Geographical and Environmental Sciences Book Section PeerReviewed 2011 ftunivnorthumb https://doi.org/10.1029/2010GM000936 2022-09-25T05:53:43Z 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 Northumbria University, Newcastle: Northumbria Research Link (NRL) Antarctic West Antarctica West Antarctic Ice Sheet Ellsworth Subglacial Lake ENVELOPE(-90.500,-90.500,-79.000,-79.000) Ellsworth Subglacial Highlands ENVELOPE(-94.000,-94.000,-80.500,-80.500) 221 233 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
unknown |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Ross, Neil Siegert, Martin Rivera, Andrés Bentley, Michael Blake, David Capper, Linda Clarke, Rachel Cockell, Charles Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, Henry Maher, Barbara Makinson, Keith Mowlem, Matt Parnell, John Priscu, John Pearce, David Smith, Andrew Tait, Andrew Tranter, Martyn Wadham, Jemma Whalley, Brian Woodward, John Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
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 Kennicutt, Mahlon Bindschadler, R. A. |
format |
Book Part |
author |
Ross, Neil Siegert, Martin Rivera, Andrés Bentley, Michael Blake, David Capper, Linda Clarke, Rachel Cockell, Charles Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, Henry Maher, Barbara Makinson, Keith Mowlem, Matt Parnell, John Priscu, John Pearce, David Smith, Andrew Tait, Andrew Tranter, Martyn Wadham, Jemma Whalley, Brian Woodward, John |
author_facet |
Ross, Neil Siegert, Martin Rivera, Andrés Bentley, Michael Blake, David Capper, Linda Clarke, Rachel Cockell, Charles Corr, Hugh Harris, W. Hill, Christopher Hindmarsh, Richard Hodgson, Dominic King, Edward Lamb, Henry Maher, Barbara Makinson, Keith Mowlem, Matt Parnell, John Priscu, John Pearce, David Smith, Andrew Tait, Andrew Tranter, Martyn Wadham, Jemma Whalley, Brian Woodward, John |
author_sort |
Ross, Neil |
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 |
https://nrl.northumbria.ac.uk/id/eprint/7073/ https://doi.org/10.1029/2010GM000936 |
long_lat |
ENVELOPE(-90.500,-90.500,-79.000,-79.000) ENVELOPE(-94.000,-94.000,-80.500,-80.500) |
geographic |
Antarctic West Antarctica West Antarctic Ice Sheet Ellsworth Subglacial Lake Ellsworth Subglacial Highlands |
geographic_facet |
Antarctic West Antarctica West Antarctic Ice Sheet Ellsworth Subglacial Lake Ellsworth Subglacial Highlands |
genre |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
Ross, Neil, Siegert, Martin, Rivera, Andrés, Bentley, Michael, Blake, David, Capper, Linda, Clarke, Rachel, Cockell, Charles, Corr, Hugh, Harris, W., Hill, Christopher, Hindmarsh, Richard, Hodgson, Dominic, King, Edward, Lamb, Henry, Maher, Barbara, Makinson, Keith, Mowlem, Matt, Parnell, John, Priscu, John, Pearce, David, Smith, Andrew, Tait, Andrew, Tranter, Martyn, Wadham, Jemma, Whalley, Brian and Woodward, John (2011) Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns. In: Antarctic Subglacial Aquatic Environments. Geophysical Monograph Series, 192 . American Geophysical Union, Washington, pp. 221-233. ISBN 978087590485, 9781118670354, 9781118671481 |
op_doi |
https://doi.org/10.1029/2010GM000936 |
container_start_page |
221 |
op_container_end_page |
233 |
_version_ |
1766050781673291776 |