Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry
During the 1999-2000 Italian Expedition, an airborne radar survey was performed along 12 transects across Lake Vostok, Antarctica, and its western and eastern margins. Ice thickness, subglacial elevation and the precise location of lake boundaries were determined. Radar data confirm the geometry der...
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International glacioogical Society
2002
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Online Access: | http://hdl.handle.net/2434/11713 https://doi.org/10.3189/172756502781831656 |
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ftunivmilanoair:oai:air.unimi.it:2434/11713 2024-02-11T09:58:05+01:00 Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry I. Tabacco A. Forieri C. Bianchi A. Zirizzotti E. Zuccheretti A. Della Vedova I. Tabacco C. Bianchi A. Zirizzotti E. Zuccheretti A. Forieri A. Della Vedova 2002 http://hdl.handle.net/2434/11713 https://doi.org/10.3189/172756502781831656 eng eng International glacioogical Society info:eu-repo/semantics/altIdentifier/wos/WOS:000177534700007 volume:48 issue:160 firstpage:62 lastpage:69 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/2434/11713 doi:10.3189/172756502781831656 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0036059970 Radio echo sounding subglacial lakes Antarctica Settore GEO/11 - Geofisica Applicata info:eu-repo/semantics/article 2002 ftunivmilanoair https://doi.org/10.3189/172756502781831656 2024-01-23T23:18:26Z During the 1999-2000 Italian Expedition, an airborne radar survey was performed along 12 transects across Lake Vostok, Antarctica, and its western and eastern margins. Ice thickness, subglacial elevation and the precise location of lake boundaries were determined. Radar data confirm the geometry derived from previous surveys, but with some slight differences. We measured a length of up to 260 km, a maximum width of 81 km and an area of roughly 14 000 km 2. Along the major axis, from north to south, the ice thickness varies from 3800 to 4250 m, with a decreasing gradient. From west to east the ice thickness is fairly constant, except for two narrow strips located on the western and eastern margins, where it increases with high thickening rate. Over the lake the surface elevation increases from 3476 m a.s.l. (south) to 3525 (north), with a decreasing gradient, while the lake surface elevation decreases from -315 to -750 m a.s.l., with a decreasing gradient (absolute value). The ice-surface and lake-ceiling slopes suggest that the lake is in a state of hydrostatic equilibrium. Article in Journal/Newspaper Antarc* Antarctica The University of Milan: Archivio Istituzionale della Ricerca (AIR) Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Journal of Glaciology 48 160 62 69 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Radio echo sounding subglacial lakes Antarctica Settore GEO/11 - Geofisica Applicata |
spellingShingle |
Radio echo sounding subglacial lakes Antarctica Settore GEO/11 - Geofisica Applicata I. Tabacco A. Forieri C. Bianchi A. Zirizzotti E. Zuccheretti A. Della Vedova Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
topic_facet |
Radio echo sounding subglacial lakes Antarctica Settore GEO/11 - Geofisica Applicata |
description |
During the 1999-2000 Italian Expedition, an airborne radar survey was performed along 12 transects across Lake Vostok, Antarctica, and its western and eastern margins. Ice thickness, subglacial elevation and the precise location of lake boundaries were determined. Radar data confirm the geometry derived from previous surveys, but with some slight differences. We measured a length of up to 260 km, a maximum width of 81 km and an area of roughly 14 000 km 2. Along the major axis, from north to south, the ice thickness varies from 3800 to 4250 m, with a decreasing gradient. From west to east the ice thickness is fairly constant, except for two narrow strips located on the western and eastern margins, where it increases with high thickening rate. Over the lake the surface elevation increases from 3476 m a.s.l. (south) to 3525 (north), with a decreasing gradient, while the lake surface elevation decreases from -315 to -750 m a.s.l., with a decreasing gradient (absolute value). The ice-surface and lake-ceiling slopes suggest that the lake is in a state of hydrostatic equilibrium. |
author2 |
I. Tabacco C. Bianchi A. Zirizzotti E. Zuccheretti A. Forieri A. Della Vedova |
format |
Article in Journal/Newspaper |
author |
I. Tabacco A. Forieri C. Bianchi A. Zirizzotti E. Zuccheretti A. Della Vedova |
author_facet |
I. Tabacco A. Forieri C. Bianchi A. Zirizzotti E. Zuccheretti A. Della Vedova |
author_sort |
I. Tabacco |
title |
Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
title_short |
Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
title_full |
Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
title_fullStr |
Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
title_full_unstemmed |
Airborne radar survey above Vostok region, east-central Antarctica: ice thickness and Lake Vostok geometry |
title_sort |
airborne radar survey above vostok region, east-central antarctica: ice thickness and lake vostok geometry |
publisher |
International glacioogical Society |
publishDate |
2002 |
url |
http://hdl.handle.net/2434/11713 https://doi.org/10.3189/172756502781831656 |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) |
geographic |
Lake Vostok |
geographic_facet |
Lake Vostok |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000177534700007 volume:48 issue:160 firstpage:62 lastpage:69 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/2434/11713 doi:10.3189/172756502781831656 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0036059970 |
op_doi |
https://doi.org/10.3189/172756502781831656 |
container_title |
Journal of Glaciology |
container_volume |
48 |
container_issue |
160 |
container_start_page |
62 |
op_container_end_page |
69 |
_version_ |
1790593662518820864 |