A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s
Glaciers on the Antarctic Peninsula have recently shown changes in extent, velocity and thickness, yet there is little quantification of change in the mass balance of individual glaciers or the processes controlling changes in extent. Here a high-resolution digital elevation model and a semi-automat...
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Cambridge University Press
2014
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Online Access: | http://nora.nerc.ac.uk/id/eprint/508844/ https://nora.nerc.ac.uk/id/eprint/508844/1/Cook.pdf https://doi.org/10.1017/S0954102014000200 |
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ftnerc:oai:nora.nerc.ac.uk:508844 2023-05-15T13:48:08+02:00 A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s Cook, A.J. Vaughan, D.G. Luckman, A.J. Murray, T. 2014-12-01 text http://nora.nerc.ac.uk/id/eprint/508844/ https://nora.nerc.ac.uk/id/eprint/508844/1/Cook.pdf https://doi.org/10.1017/S0954102014000200 en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/508844/1/Cook.pdf Cook, A.J.; Vaughan, D.G. orcid:0000-0002-9065-0570 Luckman, A.J.; Murray, T. 2014 A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s. Antarctic Science, 26 (06). 614-624. https://doi.org/10.1017/S0954102014000200 <https://doi.org/10.1017/S0954102014000200> cc_by CC-BY Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1017/S0954102014000200 2023-02-04T19:40:31Z Glaciers on the Antarctic Peninsula have recently shown changes in extent, velocity and thickness, yet there is little quantification of change in the mass balance of individual glaciers or the processes controlling changes in extent. Here a high-resolution digital elevation model and a semi-automated drainage basin delineation method have been used to define glacier systems between 63°S–70°S on the mainland and surrounding islands, resulting in an inventory of 1590 glacier basins. Of these, 860 are marine-terminating glaciers whose ice fronts can be defined at specific epochs since the 1940s. These ice front positions were digitized up to 2010 and the areas for all individual glacier basins were calculated.Glaciological characteristics, such as geometry, slope and altitudes, were attributed to each glacier, thus providing a new resource for glacier morphological analyses. Our results indicate that 90% of the 860 glaciers have reduced in area since the earliest recorded date. A north–south gradient of increasing ice loss is clear, as is distinct behaviour on the east and west coasts. The area lost varies considerably between glacier types, with correlations apparent with glacier shape, slope and frontal-type. Temporal trends indicate a uniform retreat since the 1970s, with a period of small re-advance in the late 1990s. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Antarctic Science 26 6 614 624 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Glaciers on the Antarctic Peninsula have recently shown changes in extent, velocity and thickness, yet there is little quantification of change in the mass balance of individual glaciers or the processes controlling changes in extent. Here a high-resolution digital elevation model and a semi-automated drainage basin delineation method have been used to define glacier systems between 63°S–70°S on the mainland and surrounding islands, resulting in an inventory of 1590 glacier basins. Of these, 860 are marine-terminating glaciers whose ice fronts can be defined at specific epochs since the 1940s. These ice front positions were digitized up to 2010 and the areas for all individual glacier basins were calculated.Glaciological characteristics, such as geometry, slope and altitudes, were attributed to each glacier, thus providing a new resource for glacier morphological analyses. Our results indicate that 90% of the 860 glaciers have reduced in area since the earliest recorded date. A north–south gradient of increasing ice loss is clear, as is distinct behaviour on the east and west coasts. The area lost varies considerably between glacier types, with correlations apparent with glacier shape, slope and frontal-type. Temporal trends indicate a uniform retreat since the 1970s, with a period of small re-advance in the late 1990s. |
format |
Article in Journal/Newspaper |
author |
Cook, A.J. Vaughan, D.G. Luckman, A.J. Murray, T. |
spellingShingle |
Cook, A.J. Vaughan, D.G. Luckman, A.J. Murray, T. A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
author_facet |
Cook, A.J. Vaughan, D.G. Luckman, A.J. Murray, T. |
author_sort |
Cook, A.J. |
title |
A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
title_short |
A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
title_full |
A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
title_fullStr |
A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
title_full_unstemmed |
A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s |
title_sort |
new antarctic peninsula glacier basin inventory and observed area changes since the 1940s |
publisher |
Cambridge University Press |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/508844/ https://nora.nerc.ac.uk/id/eprint/508844/1/Cook.pdf https://doi.org/10.1017/S0954102014000200 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science |
op_relation |
https://nora.nerc.ac.uk/id/eprint/508844/1/Cook.pdf Cook, A.J.; Vaughan, D.G. orcid:0000-0002-9065-0570 Luckman, A.J.; Murray, T. 2014 A new Antarctic Peninsula glacier basin inventory and observed area changes since the 1940s. Antarctic Science, 26 (06). 614-624. https://doi.org/10.1017/S0954102014000200 <https://doi.org/10.1017/S0954102014000200> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/S0954102014000200 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
6 |
container_start_page |
614 |
op_container_end_page |
624 |
_version_ |
1766248784041345024 |