Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis
Eastern Dome C, southern Talos Dome and northern Taylor Dome are drained by the Priestley, Reeves, David, Mawson and Mackay outlet glaciers, which flow into the Scott Coast on the west side of the Ross Sea, Antarctica. Airborne radar surveys were conducted on these glaciers to determine ice thicknes...
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ftunivroma3iris:oai:iris.uniroma3.it:11590/353638 2024-02-27T08:33:40+00:00 Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis Frezzotti M. Tabacco I. E. Zirizzotti A. Frezzotti, M. Tabacco, I. E. Zirizzotti, A. 2000 http://hdl.handle.net/11590/353638 https://doi.org/10.3189/172756500781832855 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000090153900010 volume:46 issue:153 firstpage:253 lastpage:264 numberofpages:12 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/11590/353638 doi:10.3189/172756500781832855 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0033747695 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues info:eu-repo/semantics/article 2000 ftunivroma3iris https://doi.org/10.3189/172756500781832855 2024-01-31T17:41:10Z Eastern Dome C, southern Talos Dome and northern Taylor Dome are drained by the Priestley, Reeves, David, Mawson and Mackay outlet glaciers, which flow into the Scott Coast on the west side of the Ross Sea, Antarctica. Airborne radar surveys were conducted on these glaciers to determine ice thickness and bed morphology along transverse and longitudinal profiles of the grounded and floating segments. A new analysis of a Landsat Thematic Mapper satellite image using a tracking technique was used to measure ice velocity at grounding lines and along ice tongues. The integration of radar and satellite data helped to locate grounding lines and to calculate the ice discharge. Changes in ice fluxes of floating glaciers were used to determine basal melting and freezing rates. The ice discharge calculated is less than half that required for a zero net surface mass balance according to the inputs given by the accumulation estimates widely adopted at present. The basal melting rates on meteoric ice represent 50% of the net ablation rate. Article in Journal/Newspaper Antarc* Antarctica Journal of Glaciology Ross Sea Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Mackay ENVELOPE(168.517,168.517,-77.700,-77.700) Reeves ENVELOPE(-67.983,-67.983,-67.133,-67.133) Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) Priestley ENVELOPE(161.883,161.883,-75.183,-75.183) Scott Coast ENVELOPE(162.500,162.500,-76.500,-76.500) Journal of Glaciology 46 153 253 264 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
description |
Eastern Dome C, southern Talos Dome and northern Taylor Dome are drained by the Priestley, Reeves, David, Mawson and Mackay outlet glaciers, which flow into the Scott Coast on the west side of the Ross Sea, Antarctica. Airborne radar surveys were conducted on these glaciers to determine ice thickness and bed morphology along transverse and longitudinal profiles of the grounded and floating segments. A new analysis of a Landsat Thematic Mapper satellite image using a tracking technique was used to measure ice velocity at grounding lines and along ice tongues. The integration of radar and satellite data helped to locate grounding lines and to calculate the ice discharge. Changes in ice fluxes of floating glaciers were used to determine basal melting and freezing rates. The ice discharge calculated is less than half that required for a zero net surface mass balance according to the inputs given by the accumulation estimates widely adopted at present. The basal melting rates on meteoric ice represent 50% of the net ablation rate. |
author2 |
Frezzotti, M. Tabacco, I. E. Zirizzotti, A. |
format |
Article in Journal/Newspaper |
author |
Frezzotti M. Tabacco I. E. Zirizzotti A. |
spellingShingle |
Frezzotti M. Tabacco I. E. Zirizzotti A. Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
author_facet |
Frezzotti M. Tabacco I. E. Zirizzotti A. |
author_sort |
Frezzotti M. |
title |
Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
title_short |
Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
title_full |
Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
title_fullStr |
Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
title_full_unstemmed |
Ice discharge of eastern Dome C drainage area, Antarctica, determined from airborne radar survey and satellite image analysis |
title_sort |
ice discharge of eastern dome c drainage area, antarctica, determined from airborne radar survey and satellite image analysis |
publishDate |
2000 |
url |
http://hdl.handle.net/11590/353638 https://doi.org/10.3189/172756500781832855 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(168.517,168.517,-77.700,-77.700) ENVELOPE(-67.983,-67.983,-67.133,-67.133) ENVELOPE(157.667,157.667,-77.667,-77.667) ENVELOPE(161.883,161.883,-75.183,-75.183) ENVELOPE(162.500,162.500,-76.500,-76.500) |
geographic |
Ross Sea Talos Dome Mackay Reeves Taylor Dome Priestley Scott Coast |
geographic_facet |
Ross Sea Talos Dome Mackay Reeves Taylor Dome Priestley Scott Coast |
genre |
Antarc* Antarctica Journal of Glaciology Ross Sea |
genre_facet |
Antarc* Antarctica Journal of Glaciology Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000090153900010 volume:46 issue:153 firstpage:253 lastpage:264 numberofpages:12 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/11590/353638 doi:10.3189/172756500781832855 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0033747695 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues |
op_doi |
https://doi.org/10.3189/172756500781832855 |
container_title |
Journal of Glaciology |
container_volume |
46 |
container_issue |
153 |
container_start_page |
253 |
op_container_end_page |
264 |
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1792046938769588224 |