Characteristics of Ice Flow in Marie Byrd Land, Antarctica
Abstract Extensive radio echo-sounding has mapped the part of West Antarctica between Byrd Station, the Whitmore Mountains, the Transantarctic Mountains, and the Ross Ice Shelf. The ice sheet in this area is dominated by five major sub-parallel ice streams (A–E), which are up to 100 km wide and exte...
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Cambridge University Press (CUP)
1979
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crcambridgeupr:10.1017/s0022143000014659 2024-09-15T17:48:40+00:00 Characteristics of Ice Flow in Marie Byrd Land, Antarctica Rose, K. E. 1979 http://dx.doi.org/10.1017/s0022143000014659 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014659 en eng Cambridge University Press (CUP) Journal of Glaciology volume 24, issue 90, page 63-75 ISSN 0022-1430 1727-5652 journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0022143000014659 2024-07-31T04:04:36Z Abstract Extensive radio echo-sounding has mapped the part of West Antarctica between Byrd Station, the Whitmore Mountains, the Transantarctic Mountains, and the Ross Ice Shelf. The ice sheet in this area is dominated by five major sub-parallel ice streams (A–E), which are up to 100 km wide and extend inland from the grounding line of the Ross Ice Shelf for about 400 km. Their positions have been determined by crevassing seen on radio echo-sounding records, trimetrogon photographs, and Landsat imagery. The ice streams are characterized by their flat transverse cross-sections, while the intervening ice sheet exhibits domes and ridges. Ice flow lines are defined from the ice-surface contour pattern and the trend of the ice streams. It is apparent from this work that the flow line passing through Byrd Station joins ice stream D. The bedrock of the area is relatively smooth near the Ross Ice Shelf, becoming rougher near Byrd Station and especially so near the Whitmore Mountains. Bedrock troughs, which control the positions of the ice streams, are believed to have a tectonic origin. In this paper the role of the ice streams in the glaciological regime of West Antarctica is investigated from radio-echo data and estimates of balance velocity, basal shear stress, and basal temperatures. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Ice Shelf Ice Stream D Journal of Glaciology Marie Byrd Land Ross Ice Shelf West Antarctica Cambridge University Press Journal of Glaciology 24 90 63 75 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Extensive radio echo-sounding has mapped the part of West Antarctica between Byrd Station, the Whitmore Mountains, the Transantarctic Mountains, and the Ross Ice Shelf. The ice sheet in this area is dominated by five major sub-parallel ice streams (A–E), which are up to 100 km wide and extend inland from the grounding line of the Ross Ice Shelf for about 400 km. Their positions have been determined by crevassing seen on radio echo-sounding records, trimetrogon photographs, and Landsat imagery. The ice streams are characterized by their flat transverse cross-sections, while the intervening ice sheet exhibits domes and ridges. Ice flow lines are defined from the ice-surface contour pattern and the trend of the ice streams. It is apparent from this work that the flow line passing through Byrd Station joins ice stream D. The bedrock of the area is relatively smooth near the Ross Ice Shelf, becoming rougher near Byrd Station and especially so near the Whitmore Mountains. Bedrock troughs, which control the positions of the ice streams, are believed to have a tectonic origin. In this paper the role of the ice streams in the glaciological regime of West Antarctica is investigated from radio-echo data and estimates of balance velocity, basal shear stress, and basal temperatures. |
format |
Article in Journal/Newspaper |
author |
Rose, K. E. |
spellingShingle |
Rose, K. E. Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
author_facet |
Rose, K. E. |
author_sort |
Rose, K. E. |
title |
Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
title_short |
Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
title_full |
Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
title_fullStr |
Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
title_full_unstemmed |
Characteristics of Ice Flow in Marie Byrd Land, Antarctica |
title_sort |
characteristics of ice flow in marie byrd land, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0022143000014659 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014659 |
genre |
Antarc* Antarctica Ice Sheet Ice Shelf Ice Stream D Journal of Glaciology Marie Byrd Land Ross Ice Shelf West Antarctica |
genre_facet |
Antarc* Antarctica Ice Sheet Ice Shelf Ice Stream D Journal of Glaciology Marie Byrd Land Ross Ice Shelf West Antarctica |
op_source |
Journal of Glaciology volume 24, issue 90, page 63-75 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000014659 |
container_title |
Journal of Glaciology |
container_volume |
24 |
container_issue |
90 |
container_start_page |
63 |
op_container_end_page |
75 |
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1810290147537715200 |