Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica
Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of...
Published in: | Annals of Glaciology |
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International Glaciological Society
1989
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Online Access: | http://nora.nerc.ac.uk/id/eprint/521235/ https://doi.org/10.3189/S0260305500006959 |
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ftnerc:oai:nora.nerc.ac.uk:521235 2023-05-15T13:29:28+02:00 Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica Frolich, R.M. Vaughan, David G. Doake, C.S.M. 1989 http://nora.nerc.ac.uk/id/eprint/521235/ https://doi.org/10.3189/S0260305500006959 unknown International Glaciological Society Frolich, R.M.; Vaughan, David G. orcid:0000-0002-9065-0570 Doake, C.S.M. 1989 Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica. Annals of Glaciology, 12. 51-56. https://doi.org/10.3189/S0260305500006959 <https://doi.org/10.3189/S0260305500006959> Publication - Article PeerReviewed 1989 ftnerc https://doi.org/10.3189/S0260305500006959 2023-02-04T19:47:13Z Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica Rutford Ice Stream Natural Environment Research Council: NERC Open Research Archive Rutford ENVELOPE(-85.300,-85.300,-78.600,-78.600) Rutford Ice Stream ENVELOPE(-80.000,-80.000,-79.167,-79.167) Carlson Inlet ENVELOPE(-80.000,-80.000,-77.833,-77.833) Annals of Glaciology 12 51 56 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow. |
format |
Article in Journal/Newspaper |
author |
Frolich, R.M. Vaughan, David G. Doake, C.S.M. |
spellingShingle |
Frolich, R.M. Vaughan, David G. Doake, C.S.M. Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
author_facet |
Frolich, R.M. Vaughan, David G. Doake, C.S.M. |
author_sort |
Frolich, R.M. |
title |
Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
title_short |
Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
title_full |
Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
title_fullStr |
Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
title_full_unstemmed |
Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica |
title_sort |
flow of rutford ice stream and comparison with carlson inlet, antarctica |
publisher |
International Glaciological Society |
publishDate |
1989 |
url |
http://nora.nerc.ac.uk/id/eprint/521235/ https://doi.org/10.3189/S0260305500006959 |
long_lat |
ENVELOPE(-85.300,-85.300,-78.600,-78.600) ENVELOPE(-80.000,-80.000,-79.167,-79.167) ENVELOPE(-80.000,-80.000,-77.833,-77.833) |
geographic |
Rutford Rutford Ice Stream Carlson Inlet |
geographic_facet |
Rutford Rutford Ice Stream Carlson Inlet |
genre |
Annals of Glaciology Antarc* Antarctica Rutford Ice Stream |
genre_facet |
Annals of Glaciology Antarc* Antarctica Rutford Ice Stream |
op_relation |
Frolich, R.M.; Vaughan, David G. orcid:0000-0002-9065-0570 Doake, C.S.M. 1989 Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica. Annals of Glaciology, 12. 51-56. https://doi.org/10.3189/S0260305500006959 <https://doi.org/10.3189/S0260305500006959> |
op_doi |
https://doi.org/10.3189/S0260305500006959 |
container_title |
Annals of Glaciology |
container_volume |
12 |
container_start_page |
51 |
op_container_end_page |
56 |
_version_ |
1766000823002726400 |