The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica
Abstract Estimates have been made of the mass budget of the total drainage basin of Lambert Glacier. These show a small but significant positive state of balance for the interior basin (the accumulation area up-stream of the major ice streams), and strongly suggest a positive balance for the Lambert...
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Cambridge University Press (CUP)
1979
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Online Access: | http://dx.doi.org/10.1017/s0022143000014222 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014222 |
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crcambridgeupr:10.1017/s0022143000014222 2024-09-15T17:38:42+00:00 The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica Allison, Ian 1979 http://dx.doi.org/10.1017/s0022143000014222 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014222 en eng Cambridge University Press (CUP) Journal of Glaciology volume 22, issue 87, page 223-235 ISSN 0022-1430 1727-5652 journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0022143000014222 2024-07-31T04:04:10Z Abstract Estimates have been made of the mass budget of the total drainage basin of Lambert Glacier. These show a small but significant positive state of balance for the interior basin (the accumulation area up-stream of the major ice streams), and strongly suggest a positive balance for the Lambert Glacier system (the region of major ice streams, between the Amery Ice Shelf and the interior basin). The total mass flux into the interior basin is estimated as 60 Gt a −1 . Results are presented from a number of ice movement stations established between 1972 and 1974 around the perimeter of the southern Prince Charles Mountains. These results, together with ice thicknesses from radio echo-sounding in the area, give a total mass outflux through the 2 000 m contour of 30 Gt a −1 , implying a budget excess of a further 30 Gt a −1 over the whole interior basin. Results from velocity and ice thickness measurements give a mass discharge through a section near the junction of Lambert Glacier and the Amery Ice Shelf of 11 Gt a −1 . Losses within the Lambert Glacier system proper account for a further 7 Gt a −1 and an overall mass excess of 12 Gt a −1 is estimated for the Lambert Glacier system. This present positive state of balance contrasts with geomorphological evidence from the southern Prince Charles Mountains of a large drop in ice level in recent geological time, and the ice surface in the area may now be building up after a major recession. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica Ice Shelf Journal of Glaciology Lambert Glacier Prince Charles Mountains Cambridge University Press Journal of Glaciology 22 87 223 235 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Estimates have been made of the mass budget of the total drainage basin of Lambert Glacier. These show a small but significant positive state of balance for the interior basin (the accumulation area up-stream of the major ice streams), and strongly suggest a positive balance for the Lambert Glacier system (the region of major ice streams, between the Amery Ice Shelf and the interior basin). The total mass flux into the interior basin is estimated as 60 Gt a −1 . Results are presented from a number of ice movement stations established between 1972 and 1974 around the perimeter of the southern Prince Charles Mountains. These results, together with ice thicknesses from radio echo-sounding in the area, give a total mass outflux through the 2 000 m contour of 30 Gt a −1 , implying a budget excess of a further 30 Gt a −1 over the whole interior basin. Results from velocity and ice thickness measurements give a mass discharge through a section near the junction of Lambert Glacier and the Amery Ice Shelf of 11 Gt a −1 . Losses within the Lambert Glacier system proper account for a further 7 Gt a −1 and an overall mass excess of 12 Gt a −1 is estimated for the Lambert Glacier system. This present positive state of balance contrasts with geomorphological evidence from the southern Prince Charles Mountains of a large drop in ice level in recent geological time, and the ice surface in the area may now be building up after a major recession. |
format |
Article in Journal/Newspaper |
author |
Allison, Ian |
spellingShingle |
Allison, Ian The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
author_facet |
Allison, Ian |
author_sort |
Allison, Ian |
title |
The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
title_short |
The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
title_full |
The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
title_fullStr |
The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
title_full_unstemmed |
The Mass Budget of the Lambert Glacier Drainage Basin, Antarctica |
title_sort |
mass budget of the lambert glacier drainage basin, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0022143000014222 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014222 |
genre |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Journal of Glaciology Lambert Glacier Prince Charles Mountains |
genre_facet |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Journal of Glaciology Lambert Glacier Prince Charles Mountains |
op_source |
Journal of Glaciology volume 22, issue 87, page 223-235 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000014222 |
container_title |
Journal of Glaciology |
container_volume |
22 |
container_issue |
87 |
container_start_page |
223 |
op_container_end_page |
235 |
_version_ |
1810474882668953600 |