Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica
In the 2016–2017 austral summer, the University of Texas Institute for Geophysics (UTIG) and the Korea Polar Research Institute (KOPRI) collaborated to perform a helicopter-based radar and laser altimeter survey of lower David Glacier with the goals of characterizing the subglacial water distributio...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:5ececa251aa649f791db820bda42d2df 2023-05-15T13:51:47+02:00 Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica L. E. Lindzey L. H. Beem D. A. Young E. Quartini D. D. Blankenship C.-K. Lee W. S. Lee J. I. Lee J. Lee 2020-07-01 https://doi.org/10.5194/tc-14-2217-2020 https://tc.copernicus.org/articles/14/2217/2020/tc-14-2217-2020.pdf https://doaj.org/article/5ececa251aa649f791db820bda42d2df en eng Copernicus Publications doi:10.5194/tc-14-2217-2020 1994-0416 1994-0424 https://tc.copernicus.org/articles/14/2217/2020/tc-14-2217-2020.pdf https://doaj.org/article/5ececa251aa649f791db820bda42d2df undefined The Cryosphere, Vol 14, Pp 2217-2233 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/tc-14-2217-2020 2023-01-22T17:51:29Z In the 2016–2017 austral summer, the University of Texas Institute for Geophysics (UTIG) and the Korea Polar Research Institute (KOPRI) collaborated to perform a helicopter-based radar and laser altimeter survey of lower David Glacier with the goals of characterizing the subglacial water distribution that supports a system of active subglacial lakes and informing the site selection for a potential subglacial access drilling project. This survey overlaps with and expands upon an earlier survey of the Drygalski Ice Tongue and the David Glacier grounding zone from 2011 and 2012 to create a 5 km resolution survey extending 200 km upstream from the grounding zone. The surveyed region covers two active subglacial lakes and includes reflights of ICESat ground tracks that extend the surface elevation record in the region. This is one of the most extensive aerogeophysical surveys of an active lake system and provides higher-resolution boundary conditions and basal characterizations that will enable process studies of these features. This paper introduces a new helicopter-mounted ice-penetrating radar and laser altimetry system, notes a discrepancy between the original surface-elevation-derived lake outlines and locations of possible water collection based on basal geometry and hydraulic potential, and presents radar-based observations of basal conditions that are inconsistent with large collections of ponded water despite laser altimetry showing that the hypothesized active lakes are at a highstand. Article in Journal/Newspaper Antarc* Antarctica David Glacier Korea Polar Research Institute The Cryosphere Unknown Austral David Glacier ENVELOPE(160.000,160.000,-75.333,-75.333) Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) Drygalski Ice Tongue ENVELOPE(163.500,163.500,-75.400,-75.400) The Cryosphere 14 7 2217 2233 |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir L. E. Lindzey L. H. Beem D. A. Young E. Quartini D. D. Blankenship C.-K. Lee W. S. Lee J. I. Lee J. Lee Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
topic_facet |
geo envir |
description |
In the 2016–2017 austral summer, the University of Texas Institute for Geophysics (UTIG) and the Korea Polar Research Institute (KOPRI) collaborated to perform a helicopter-based radar and laser altimeter survey of lower David Glacier with the goals of characterizing the subglacial water distribution that supports a system of active subglacial lakes and informing the site selection for a potential subglacial access drilling project. This survey overlaps with and expands upon an earlier survey of the Drygalski Ice Tongue and the David Glacier grounding zone from 2011 and 2012 to create a 5 km resolution survey extending 200 km upstream from the grounding zone. The surveyed region covers two active subglacial lakes and includes reflights of ICESat ground tracks that extend the surface elevation record in the region. This is one of the most extensive aerogeophysical surveys of an active lake system and provides higher-resolution boundary conditions and basal characterizations that will enable process studies of these features. This paper introduces a new helicopter-mounted ice-penetrating radar and laser altimetry system, notes a discrepancy between the original surface-elevation-derived lake outlines and locations of possible water collection based on basal geometry and hydraulic potential, and presents radar-based observations of basal conditions that are inconsistent with large collections of ponded water despite laser altimetry showing that the hypothesized active lakes are at a highstand. |
format |
Article in Journal/Newspaper |
author |
L. E. Lindzey L. H. Beem D. A. Young E. Quartini D. D. Blankenship C.-K. Lee W. S. Lee J. I. Lee J. Lee |
author_facet |
L. E. Lindzey L. H. Beem D. A. Young E. Quartini D. D. Blankenship C.-K. Lee W. S. Lee J. I. Lee J. Lee |
author_sort |
L. E. Lindzey |
title |
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
title_short |
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
title_full |
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
title_fullStr |
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
title_full_unstemmed |
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica |
title_sort |
aerogeophysical characterization of an active subglacial lake system in the david glacier catchment, antarctica |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-2217-2020 https://tc.copernicus.org/articles/14/2217/2020/tc-14-2217-2020.pdf https://doaj.org/article/5ececa251aa649f791db820bda42d2df |
long_lat |
ENVELOPE(160.000,160.000,-75.333,-75.333) ENVELOPE(-61.000,-61.000,-64.717,-64.717) ENVELOPE(163.500,163.500,-75.400,-75.400) |
geographic |
Austral David Glacier Drygalski Drygalski Ice Tongue |
geographic_facet |
Austral David Glacier Drygalski Drygalski Ice Tongue |
genre |
Antarc* Antarctica David Glacier Korea Polar Research Institute The Cryosphere |
genre_facet |
Antarc* Antarctica David Glacier Korea Polar Research Institute The Cryosphere |
op_source |
The Cryosphere, Vol 14, Pp 2217-2233 (2020) |
op_relation |
doi:10.5194/tc-14-2217-2020 1994-0416 1994-0424 https://tc.copernicus.org/articles/14/2217/2020/tc-14-2217-2020.pdf https://doaj.org/article/5ececa251aa649f791db820bda42d2df |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-14-2217-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
7 |
container_start_page |
2217 |
op_container_end_page |
2233 |
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1766255820858720256 |