Form, structure and stability of the margin of the Antarctic ice
Abstract: Studies of glacier margins have suggested that form and structure can be used to infer mass balance condition and stability. This paper examines this idea by investigating the form and structure of the Antarctic ice sheet at two coastal oases in East Antarctica. Two principal forms of the...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.540.5591 2023-05-15T13:44:46+02:00 Form, structure and stability of the margin of the Antarctic ice Vestfold Hills Bunger Hills East Antarctica Sean J. Fitzsimons Eric A. Colhoun The Pennsylvania State University CiteSeerX Archives 1994 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.540.5591 http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.540.5591 http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf text 1994 ftciteseerx 2016-01-08T11:02:57Z Abstract: Studies of glacier margins have suggested that form and structure can be used to infer mass balance condition and stability. This paper examines this idea by investigating the form and structure of the Antarctic ice sheet at two coastal oases in East Antarctica. Two principal forms of the margin of the ice sheet in the Vestfold and Bunger hills that are discussed are ice cliffs and gently-sloping ice margins with an inner moraine. The form of the ice margins in both areas is primarily related to the accumulation of drift snow and superimposed ice and not to mass balance condition. It is concluded that the form and structure of ice margins are ambiguous indicators of mass balance condition and stability and that a change in mass budget is probably neither a sufficient nor a necessary condition for a change in the morphology of ice margins. Although we argue that the form and structure of the ice margins tells us little about stability, interpretation of the Holocene history and geomorphology of the oases suggests that the ice margins have been stable at least throughout the Holocene and that this condition of overall stability continues today. Text Antarc* Antarctic Antarctica East Antarctica Ice Sheet Unknown Antarctic Bunger Hills ENVELOPE(100.883,100.883,-66.167,-66.167) East Antarctica The Antarctic Vestfold |
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English |
description |
Abstract: Studies of glacier margins have suggested that form and structure can be used to infer mass balance condition and stability. This paper examines this idea by investigating the form and structure of the Antarctic ice sheet at two coastal oases in East Antarctica. Two principal forms of the margin of the ice sheet in the Vestfold and Bunger hills that are discussed are ice cliffs and gently-sloping ice margins with an inner moraine. The form of the ice margins in both areas is primarily related to the accumulation of drift snow and superimposed ice and not to mass balance condition. It is concluded that the form and structure of ice margins are ambiguous indicators of mass balance condition and stability and that a change in mass budget is probably neither a sufficient nor a necessary condition for a change in the morphology of ice margins. Although we argue that the form and structure of the ice margins tells us little about stability, interpretation of the Holocene history and geomorphology of the oases suggests that the ice margins have been stable at least throughout the Holocene and that this condition of overall stability continues today. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Vestfold Hills Bunger Hills East Antarctica Sean J. Fitzsimons Eric A. Colhoun |
spellingShingle |
Vestfold Hills Bunger Hills East Antarctica Sean J. Fitzsimons Eric A. Colhoun Form, structure and stability of the margin of the Antarctic ice |
author_facet |
Vestfold Hills Bunger Hills East Antarctica Sean J. Fitzsimons Eric A. Colhoun |
author_sort |
Vestfold Hills |
title |
Form, structure and stability of the margin of the Antarctic ice |
title_short |
Form, structure and stability of the margin of the Antarctic ice |
title_full |
Form, structure and stability of the margin of the Antarctic ice |
title_fullStr |
Form, structure and stability of the margin of the Antarctic ice |
title_full_unstemmed |
Form, structure and stability of the margin of the Antarctic ice |
title_sort |
form, structure and stability of the margin of the antarctic ice |
publishDate |
1994 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.540.5591 http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf |
long_lat |
ENVELOPE(100.883,100.883,-66.167,-66.167) |
geographic |
Antarctic Bunger Hills East Antarctica The Antarctic Vestfold |
geographic_facet |
Antarctic Bunger Hills East Antarctica The Antarctic Vestfold |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_source |
http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.540.5591 http://glaciers.otago.ac.nz/__data/assets/pdf_file/0019/2557/Fitzsimons_Colhoun_1995.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766206133627781120 |