Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse
ABSTRACT Dome C was chosen by the European Project for Ice Coring in Antarctica (EPICA) as the site at which to drill a deep ice core. This paper presents results from geodetic surveys of ice velocities (absolute and relative) at Dome C and along a transect to Terra Nova Bay. The purpose of the surv...
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ftunibolognairis:oai:cris.unibo.it:11585/10906 2024-04-14T08:02:04+00:00 Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse VITTUARI, LUCA GANDOLFI, STEFANO BITELLI, GABRIELE C. Vincent M. Frezzotti F. Mancini A. Capra L.Vittuari C. Vincent M. Frezzotti F. Mancini S. Gandolfi G. Bitelli A. Capra 2004 STAMPA http://hdl.handle.net/11585/10906 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000232368400061 volume:39 firstpage:402 lastpage:408 numberofpages:7 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/11585/10906 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-23844511127 EPICA (EUROPEAN PROJECT FOR ICE CORING IN ANTARCTICA) ITASE (INTERNAT. TRANS-ANTARCTIC SCIENTIFIC EXPEDITION) GPS CONTROL NETWORK DORIS DOME C ANTARCTICA info:eu-repo/semantics/article 2004 ftunibolognairis 2024-03-21T17:11:21Z ABSTRACT Dome C was chosen by the European Project for Ice Coring in Antarctica (EPICA) as the site at which to drill a deep ice core. This paper presents results from geodetic surveys of ice velocities (absolute and relative) at Dome C and along a transect to Terra Nova Bay. The purpose of the surveys was to provide accurate data for the study of ice dynamics studies; particularly a strain network comprising 37 poles surveyed in 1995 and again in 1999. Data indicates that ice surface at the poles closest to the topographic summit move horizontally by up to a few mm a-1 in a direction consistent with downslope motion of the ice sheet, while those located 25 km away from the summit move up to 211 mm a-1. The EPICA drilling site yields an interpolated velocity of about 15±10 mm a-1 in N-NW direction. Analysis of the velocity field and surface topography reveals that the surface flow centre is nearly co-located with the dome summit, and that both are in a steady-state condition. The measured horizontal velocities are consistent with remote sensing result and provide accurate ground truth control for flow mapping. Seven snow-firn cores, up to 53 m deep, were drilled during the Terra Nova Bay - Dome C traverse. Submerged velocity systems were installed at the borehole and measured using GPS (Global Positioning System), first results show a steady state condition. Measured (horizontal) ice velocities increase from the summit of the ice sheet to the coast, reaching about 28 m a-1 at site GPS2A. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Ice Sheet IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Antarctic Terra Nova Bay |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
EPICA (EUROPEAN PROJECT FOR ICE CORING IN ANTARCTICA) ITASE (INTERNAT. TRANS-ANTARCTIC SCIENTIFIC EXPEDITION) GPS CONTROL NETWORK DORIS DOME C ANTARCTICA |
spellingShingle |
EPICA (EUROPEAN PROJECT FOR ICE CORING IN ANTARCTICA) ITASE (INTERNAT. TRANS-ANTARCTIC SCIENTIFIC EXPEDITION) GPS CONTROL NETWORK DORIS DOME C ANTARCTICA VITTUARI, LUCA GANDOLFI, STEFANO BITELLI, GABRIELE C. Vincent M. Frezzotti F. Mancini A. Capra Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
topic_facet |
EPICA (EUROPEAN PROJECT FOR ICE CORING IN ANTARCTICA) ITASE (INTERNAT. TRANS-ANTARCTIC SCIENTIFIC EXPEDITION) GPS CONTROL NETWORK DORIS DOME C ANTARCTICA |
description |
ABSTRACT Dome C was chosen by the European Project for Ice Coring in Antarctica (EPICA) as the site at which to drill a deep ice core. This paper presents results from geodetic surveys of ice velocities (absolute and relative) at Dome C and along a transect to Terra Nova Bay. The purpose of the surveys was to provide accurate data for the study of ice dynamics studies; particularly a strain network comprising 37 poles surveyed in 1995 and again in 1999. Data indicates that ice surface at the poles closest to the topographic summit move horizontally by up to a few mm a-1 in a direction consistent with downslope motion of the ice sheet, while those located 25 km away from the summit move up to 211 mm a-1. The EPICA drilling site yields an interpolated velocity of about 15±10 mm a-1 in N-NW direction. Analysis of the velocity field and surface topography reveals that the surface flow centre is nearly co-located with the dome summit, and that both are in a steady-state condition. The measured horizontal velocities are consistent with remote sensing result and provide accurate ground truth control for flow mapping. Seven snow-firn cores, up to 53 m deep, were drilled during the Terra Nova Bay - Dome C traverse. Submerged velocity systems were installed at the borehole and measured using GPS (Global Positioning System), first results show a steady state condition. Measured (horizontal) ice velocities increase from the summit of the ice sheet to the coast, reaching about 28 m a-1 at site GPS2A. |
author2 |
L.Vittuari C. Vincent M. Frezzotti F. Mancini S. Gandolfi G. Bitelli A. Capra |
format |
Article in Journal/Newspaper |
author |
VITTUARI, LUCA GANDOLFI, STEFANO BITELLI, GABRIELE C. Vincent M. Frezzotti F. Mancini A. Capra |
author_facet |
VITTUARI, LUCA GANDOLFI, STEFANO BITELLI, GABRIELE C. Vincent M. Frezzotti F. Mancini A. Capra |
author_sort |
VITTUARI, LUCA |
title |
Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
title_short |
Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
title_full |
Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
title_fullStr |
Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
title_full_unstemmed |
Space Geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse |
title_sort |
space geodesy as a tool for measuring ice surface velocity in the dome c region and along the itase traverse |
publishDate |
2004 |
url |
http://hdl.handle.net/11585/10906 |
geographic |
Antarctic Terra Nova Bay |
geographic_facet |
Antarctic Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica EPICA ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000232368400061 volume:39 firstpage:402 lastpage:408 numberofpages:7 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/11585/10906 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-23844511127 |
_version_ |
1796312422615613440 |