A Three-Dimensional Polar Ice-Sheet Model
Abstract A three-dimensional model of the temperature and velocity distribution within any arbitrary-shaped ice mass is described. There is a mutual interaction in the model between the flow of the ice and its thermodynamics, since the flow law used in the model is temperature-dependent. Ice growth...
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Language: | English |
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Cambridge University Press (CUP)
1977
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Online Access: | http://dx.doi.org/10.1017/s0022143000021067 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021067 |
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crcambridgeupr:10.1017/s0022143000021067 2024-03-03T08:45:00+00:00 A Three-Dimensional Polar Ice-Sheet Model Jenssen, D. 1977 http://dx.doi.org/10.1017/s0022143000021067 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021067 en eng Cambridge University Press (CUP) Journal of Glaciology volume 18, issue 80, page 373-389 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1977 crcambridgeupr https://doi.org/10.1017/s0022143000021067 2024-02-08T08:38:15Z Abstract A three-dimensional model of the temperature and velocity distribution within any arbitrary-shaped ice mass is described. There is a mutual interaction in the model between the flow of the ice and its thermodynamics, since the flow law used in the model is temperature-dependent. Ice growth in three dimensions is governed by mass accumulation through precipitation, by mass depletion through loss of ice over the ocean, and by continuity requirements. Phase changes at the base of the ice are accounted for. The model has been applied in art exploratory manner to the Greenland ice sheet. Changes in the ice shape and temperature are presented and discussed. The basic shortcoming of the model as here presented appears primarily due to the coarse finite-difference mesh used, and to an unsophisticated approach to modelling the boundary ice. Article in Journal/Newspaper Greenland Ice Sheet Journal of Glaciology Cambridge University Press Greenland Journal of Glaciology 18 80 373 389 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Jenssen, D. A Three-Dimensional Polar Ice-Sheet Model |
topic_facet |
Earth-Surface Processes |
description |
Abstract A three-dimensional model of the temperature and velocity distribution within any arbitrary-shaped ice mass is described. There is a mutual interaction in the model between the flow of the ice and its thermodynamics, since the flow law used in the model is temperature-dependent. Ice growth in three dimensions is governed by mass accumulation through precipitation, by mass depletion through loss of ice over the ocean, and by continuity requirements. Phase changes at the base of the ice are accounted for. The model has been applied in art exploratory manner to the Greenland ice sheet. Changes in the ice shape and temperature are presented and discussed. The basic shortcoming of the model as here presented appears primarily due to the coarse finite-difference mesh used, and to an unsophisticated approach to modelling the boundary ice. |
format |
Article in Journal/Newspaper |
author |
Jenssen, D. |
author_facet |
Jenssen, D. |
author_sort |
Jenssen, D. |
title |
A Three-Dimensional Polar Ice-Sheet Model |
title_short |
A Three-Dimensional Polar Ice-Sheet Model |
title_full |
A Three-Dimensional Polar Ice-Sheet Model |
title_fullStr |
A Three-Dimensional Polar Ice-Sheet Model |
title_full_unstemmed |
A Three-Dimensional Polar Ice-Sheet Model |
title_sort |
three-dimensional polar ice-sheet model |
publisher |
Cambridge University Press (CUP) |
publishDate |
1977 |
url |
http://dx.doi.org/10.1017/s0022143000021067 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021067 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Journal of Glaciology |
genre_facet |
Greenland Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 18, issue 80, page 373-389 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000021067 |
container_title |
Journal of Glaciology |
container_volume |
18 |
container_issue |
80 |
container_start_page |
373 |
op_container_end_page |
389 |
_version_ |
1792500526522302464 |