Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013)
Abstract Recent work has highlighted the sensitivity of marine-terminating glaciers to decadal-scale changes in the ocean–climate system in parts of East Antarctica. However, compared to Greenland, West Antarctica and the Antarctic Peninsula, little is known about recent glacier change and potential...
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Online Access: | http://dx.doi.org/10.1017/s0954102017000074 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000074 |
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crcambridgeupr:10.1017/s0954102017000074 2024-09-09T19:10:09+00:00 Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) Lovell, A.M. Stokes, C.R. Jamieson, S.S.R. 2017 http://dx.doi.org/10.1017/s0954102017000074 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000074 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Antarctic Science volume 29, issue 5, page 468-483 ISSN 0954-1020 1365-2079 journal-article 2017 crcambridgeupr https://doi.org/10.1017/s0954102017000074 2024-06-19T04:04:35Z Abstract Recent work has highlighted the sensitivity of marine-terminating glaciers to decadal-scale changes in the ocean–climate system in parts of East Antarctica. However, compared to Greenland, West Antarctica and the Antarctic Peninsula, little is known about recent glacier change and potential cause(s), with several regions yet to be studied in detail. In this paper, we map the terminus positions of 135 glaciers along the coastline of Victoria Land, Oates Land and George V Land from 1972–2013 at a higher temporal resolution (sub-decadal intervals) than in previous research. These three regions span a range of climatic and oceanic conditions and contain a variety of glacier types. Overall, from 1972–2013, 36% of glaciers advanced, 25% retreated and the remainder showed no discernible change. On sub-decadal timescales, there were no clear trends in glacier terminus position change. However, marine-terminating glaciers experienced larger terminus position changes compared with terrestrial glaciers, and those with an unconstrained floating tongue exhibited the largest variations. We conclude that, unlike in Greenland, West Antarctica and the Antarctic Peninsula, there is no clear glacier retreat in the study area and that most of the variations are more closely linked to glacier size and terminus type. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica East Antarctica George V Land glacier Greenland Oates Land Victoria Land West Antarctica Cambridge University Press Antarctic Antarctic Peninsula East Antarctica George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Greenland Oates Land ENVELOPE(158.000,158.000,-70.000,-70.000) The Antarctic Victoria Land West Antarctica Antarctic Science 29 5 468 483 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Recent work has highlighted the sensitivity of marine-terminating glaciers to decadal-scale changes in the ocean–climate system in parts of East Antarctica. However, compared to Greenland, West Antarctica and the Antarctic Peninsula, little is known about recent glacier change and potential cause(s), with several regions yet to be studied in detail. In this paper, we map the terminus positions of 135 glaciers along the coastline of Victoria Land, Oates Land and George V Land from 1972–2013 at a higher temporal resolution (sub-decadal intervals) than in previous research. These three regions span a range of climatic and oceanic conditions and contain a variety of glacier types. Overall, from 1972–2013, 36% of glaciers advanced, 25% retreated and the remainder showed no discernible change. On sub-decadal timescales, there were no clear trends in glacier terminus position change. However, marine-terminating glaciers experienced larger terminus position changes compared with terrestrial glaciers, and those with an unconstrained floating tongue exhibited the largest variations. We conclude that, unlike in Greenland, West Antarctica and the Antarctic Peninsula, there is no clear glacier retreat in the study area and that most of the variations are more closely linked to glacier size and terminus type. |
format |
Article in Journal/Newspaper |
author |
Lovell, A.M. Stokes, C.R. Jamieson, S.S.R. |
spellingShingle |
Lovell, A.M. Stokes, C.R. Jamieson, S.S.R. Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
author_facet |
Lovell, A.M. Stokes, C.R. Jamieson, S.S.R. |
author_sort |
Lovell, A.M. |
title |
Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
title_short |
Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
title_full |
Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
title_fullStr |
Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
title_full_unstemmed |
Sub-decadal variations in outlet glacier terminus positions in Victoria Land, Oates Land and George V Land, East Antarctica (1972–2013) |
title_sort |
sub-decadal variations in outlet glacier terminus positions in victoria land, oates land and george v land, east antarctica (1972–2013) |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/s0954102017000074 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000074 |
long_lat |
ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(158.000,158.000,-70.000,-70.000) |
geographic |
Antarctic Antarctic Peninsula East Antarctica George V Land Greenland Oates Land The Antarctic Victoria Land West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica George V Land Greenland Oates Land The Antarctic Victoria Land West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica East Antarctica George V Land glacier Greenland Oates Land Victoria Land West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica East Antarctica George V Land glacier Greenland Oates Land Victoria Land West Antarctica |
op_source |
Antarctic Science volume 29, issue 5, page 468-483 ISSN 0954-1020 1365-2079 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0954102017000074 |
container_title |
Antarctic Science |
container_volume |
29 |
container_issue |
5 |
container_start_page |
468 |
op_container_end_page |
483 |
_version_ |
1809824693232861184 |