Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis
All parts of a two-dimensional, isothermal, stationary marine glacier (grounded ice sheet, ice shelf and transition zone) with constant viscosity are analysed by perturbation methods. In so doing, all zones of different flow patterns can be considered separately. Correlations between spatial scales...
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ftkazanuniv:oai:dspace.kpfu.ru:net/133696 2023-05-15T13:29:21+02:00 Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis Chugunov V. Wilchinsky A. 1996 https://dspace.kpfu.ru/xmlui/handle/net/133696 unknown Annals of Glaciology 23 59 http://dspace.kpfu.ru/xmlui/bitstream/net/133696/-1/SCOPUS02603055-1996-23-SID0030436886-a1.pdf 0260-3055 https://dspace.kpfu.ru/xmlui/handle/net/133696 SCOPUS02603055-1996-23-SID0030436886 Article 1996 ftkazanuniv 2022-01-01T09:45:32Z All parts of a two-dimensional, isothermal, stationary marine glacier (grounded ice sheet, ice shelf and transition zone) with constant viscosity are analysed by perturbation methods. In so doing, all zones of different flow patterns can be considered separately. Correlations between spatial scales for all parts can be expressed in terms of the typical ice-surface slope distant from the ocean, which reflects exterior conditions of the glacier's existence. In considering the ice-sheet-ice-shelf transition zone, a small parameter characterizing the difference between ice and water densities is used. Such an analysis allows us to find boundary conditions at the grounding line for the grounded ice mass. Glacier-surface profiles are determined by numerical methods. The grounding-line position found by using the boundary conditions derived in this paper differs from that obtained by using Thomas and Bentley's (1978) boundary conditions by about 10% of the grounded ice-stream length. Article in Journal/Newspaper Annals of Glaciology Ice Sheet Ice Shelf Kazan Federal University Digital Repository Marine Glacier ENVELOPE(-78.746,-78.746,82.286,82.286) |
institution |
Open Polar |
collection |
Kazan Federal University Digital Repository |
op_collection_id |
ftkazanuniv |
language |
unknown |
description |
All parts of a two-dimensional, isothermal, stationary marine glacier (grounded ice sheet, ice shelf and transition zone) with constant viscosity are analysed by perturbation methods. In so doing, all zones of different flow patterns can be considered separately. Correlations between spatial scales for all parts can be expressed in terms of the typical ice-surface slope distant from the ocean, which reflects exterior conditions of the glacier's existence. In considering the ice-sheet-ice-shelf transition zone, a small parameter characterizing the difference between ice and water densities is used. Such an analysis allows us to find boundary conditions at the grounding line for the grounded ice mass. Glacier-surface profiles are determined by numerical methods. The grounding-line position found by using the boundary conditions derived in this paper differs from that obtained by using Thomas and Bentley's (1978) boundary conditions by about 10% of the grounded ice-stream length. |
format |
Article in Journal/Newspaper |
author |
Chugunov V. Wilchinsky A. |
spellingShingle |
Chugunov V. Wilchinsky A. Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
author_facet |
Chugunov V. Wilchinsky A. |
author_sort |
Chugunov V. |
title |
Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
title_short |
Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
title_full |
Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
title_fullStr |
Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
title_full_unstemmed |
Modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
title_sort |
modelling of a marine glacier and ice-sheet-ice-shelf transition zone based on asymptotic analysis |
publishDate |
1996 |
url |
https://dspace.kpfu.ru/xmlui/handle/net/133696 |
long_lat |
ENVELOPE(-78.746,-78.746,82.286,82.286) |
geographic |
Marine Glacier |
geographic_facet |
Marine Glacier |
genre |
Annals of Glaciology Ice Sheet Ice Shelf |
genre_facet |
Annals of Glaciology Ice Sheet Ice Shelf |
op_source |
SCOPUS02603055-1996-23-SID0030436886 |
op_relation |
Annals of Glaciology 23 59 http://dspace.kpfu.ru/xmlui/bitstream/net/133696/-1/SCOPUS02603055-1996-23-SID0030436886-a1.pdf 0260-3055 https://dspace.kpfu.ru/xmlui/handle/net/133696 |
_version_ |
1766000066766569472 |