Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica
Subglacial water plays an important role in ice sheet dynamics and stability. Subglacial lakes are often located at the onset of ice streams and have been hypothesised to enhance ice flow downstream by lubricating the ice–bed interface. The most recent subglacial-lake inventory of Antarctica mapped...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00055122 2024-09-15T17:47:37+00:00 Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica Napoleoni, Felipe Jamieson, Stewart S. R. Ross, Neil Bentley, Michael J. Rivera, Andrés Smith, Andrew M. Siegert, Martin J. Paxman, Guy J. G. Gacitúa, Guisella Uribe, José A. Zamora, Rodrigo Brisbourne, Alex M. Vaughan, David G. 2020-12 electronic https://doi.org/10.5194/tc-14-4507-2020 https://noa.gwlb.de/receive/cop_mods_00055122 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054773/tc-14-4507-2020.pdf https://tc.copernicus.org/articles/14/4507/2020/tc-14-4507-2020.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4507-2020 https://noa.gwlb.de/receive/cop_mods_00055122 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054773/tc-14-4507-2020.pdf https://tc.copernicus.org/articles/14/4507/2020/tc-14-4507-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/tc-14-4507-2020 2024-06-26T04:41:37Z Subglacial water plays an important role in ice sheet dynamics and stability. Subglacial lakes are often located at the onset of ice streams and have been hypothesised to enhance ice flow downstream by lubricating the ice–bed interface. The most recent subglacial-lake inventory of Antarctica mapped nearly 400 lakes, of which ∼ 14 % are found in West Antarctica. Despite the potential importance of subglacial water for ice dynamics, there is a lack of detailed subglacial-water characterisation in West Antarctica. Using radio-echo sounding data, we analyse the ice–bed interface to detect subglacial lakes. We report 33 previously uncharted subglacial lakes and present a systematic analysis of their physical properties. This represents a ∼ 40 % increase in subglacial lakes in West Antarctica. Additionally, a new digital elevation model of basal topography of the Ellsworth Subglacial Highlands was built and used to create a hydropotential model to simulate the subglacial hydrological network. This allows us to characterise basal hydrology, determine subglacial water catchments and assess their connectivity. We show that the simulated subglacial hydrological catchments of the Rutford Ice Stream, Pine Island Glacier and Thwaites Glacier do not correspond to their ice surface catchments. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Rutford Ice Stream The Cryosphere Thwaites Glacier West Antarctica Niedersächsisches Online-Archiv NOA The Cryosphere 14 12 4507 4524 |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Napoleoni, Felipe Jamieson, Stewart S. R. Ross, Neil Bentley, Michael J. Rivera, Andrés Smith, Andrew M. Siegert, Martin J. Paxman, Guy J. G. Gacitúa, Guisella Uribe, José A. Zamora, Rodrigo Brisbourne, Alex M. Vaughan, David G. Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Subglacial water plays an important role in ice sheet dynamics and stability. Subglacial lakes are often located at the onset of ice streams and have been hypothesised to enhance ice flow downstream by lubricating the ice–bed interface. The most recent subglacial-lake inventory of Antarctica mapped nearly 400 lakes, of which ∼ 14 % are found in West Antarctica. Despite the potential importance of subglacial water for ice dynamics, there is a lack of detailed subglacial-water characterisation in West Antarctica. Using radio-echo sounding data, we analyse the ice–bed interface to detect subglacial lakes. We report 33 previously uncharted subglacial lakes and present a systematic analysis of their physical properties. This represents a ∼ 40 % increase in subglacial lakes in West Antarctica. Additionally, a new digital elevation model of basal topography of the Ellsworth Subglacial Highlands was built and used to create a hydropotential model to simulate the subglacial hydrological network. This allows us to characterise basal hydrology, determine subglacial water catchments and assess their connectivity. We show that the simulated subglacial hydrological catchments of the Rutford Ice Stream, Pine Island Glacier and Thwaites Glacier do not correspond to their ice surface catchments. |
format |
Article in Journal/Newspaper |
author |
Napoleoni, Felipe Jamieson, Stewart S. R. Ross, Neil Bentley, Michael J. Rivera, Andrés Smith, Andrew M. Siegert, Martin J. Paxman, Guy J. G. Gacitúa, Guisella Uribe, José A. Zamora, Rodrigo Brisbourne, Alex M. Vaughan, David G. |
author_facet |
Napoleoni, Felipe Jamieson, Stewart S. R. Ross, Neil Bentley, Michael J. Rivera, Andrés Smith, Andrew M. Siegert, Martin J. Paxman, Guy J. G. Gacitúa, Guisella Uribe, José A. Zamora, Rodrigo Brisbourne, Alex M. Vaughan, David G. |
author_sort |
Napoleoni, Felipe |
title |
Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
title_short |
Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
title_full |
Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
title_fullStr |
Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
title_full_unstemmed |
Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica |
title_sort |
subglacial lakes and hydrology across the ellsworth subglacial highlands, west antarctica |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-4507-2020 https://noa.gwlb.de/receive/cop_mods_00055122 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054773/tc-14-4507-2020.pdf https://tc.copernicus.org/articles/14/4507/2020/tc-14-4507-2020.pdf |
genre |
Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Rutford Ice Stream The Cryosphere Thwaites Glacier West Antarctica |
genre_facet |
Antarc* Antarctica Ice Sheet Pine Island Pine Island Glacier Rutford Ice Stream The Cryosphere Thwaites Glacier West Antarctica |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4507-2020 https://noa.gwlb.de/receive/cop_mods_00055122 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054773/tc-14-4507-2020.pdf https://tc.copernicus.org/articles/14/4507/2020/tc-14-4507-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-14-4507-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
12 |
container_start_page |
4507 |
op_container_end_page |
4524 |
_version_ |
1810497077375926272 |