Glaciological studies on Nelson Island, South Shetland Islands, Antarctica

International audience The ice cap on Nelson Island in the South Shetland Islands, West Antarctica, was studied between 1985 and 1989. The ice cap has an average thickness of 120 m. it is temperate, exists under the sub-Antarctic maritime climate and almost completely covers the island. Owing to int...

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Published in:Journal of Glaciology
Main Authors: Jiawen, Ren, Dahe, Qin, Petit, J., Jouzel, J., Wenti, Wang, Chen, Liu, Xiaojun, Wang, Songlin, Qian, Xiaoxiang, Wang
Other Authors: Laboratoire de Modélisation du Climat et de l'Environnement (LMCE)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1995
Subjects:
Online Access:https://hal.archives-ouvertes.fr/hal-03334858
https://hal.archives-ouvertes.fr/hal-03334858/document
https://hal.archives-ouvertes.fr/hal-03334858/file/jg1995iawen408.pdf
https://doi.org/10.3189/S0022143000016270
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spelling ftunivnantes:oai:HAL:hal-03334858v1 2023-05-15T13:57:16+02:00 Glaciological studies on Nelson Island, South Shetland Islands, Antarctica Jiawen, Ren Dahe, Qin Petit, J. Jouzel, J. Wenti, Wang Chen, Liu Xiaojun, Wang Songlin, Qian Xiaoxiang, Wang Laboratoire de Modélisation du Climat et de l'Environnement (LMCE) 1995 https://hal.archives-ouvertes.fr/hal-03334858 https://hal.archives-ouvertes.fr/hal-03334858/document https://hal.archives-ouvertes.fr/hal-03334858/file/jg1995iawen408.pdf https://doi.org/10.3189/S0022143000016270 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/S0022143000016270 hal-03334858 https://hal.archives-ouvertes.fr/hal-03334858 https://hal.archives-ouvertes.fr/hal-03334858/document https://hal.archives-ouvertes.fr/hal-03334858/file/jg1995iawen408.pdf doi:10.3189/S0022143000016270 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-03334858 Journal of Glaciology, International Glaciological Society, 1995, 41 (138), pp.408-412. ⟨10.3189/S0022143000016270⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1995 ftunivnantes https://doi.org/10.3189/S0022143000016270 2022-11-02T00:31:37Z International audience The ice cap on Nelson Island in the South Shetland Islands, West Antarctica, was studied between 1985 and 1989. The ice cap has an average thickness of 120 m. it is temperate, exists under the sub-Antarctic maritime climate and almost completely covers the island. Owing to intense percolation of meltwater (and, to some extent, liquid precipitation), the snow-firn layer is in the soaked facies, with a firn-ice transition at a depth of 25-26 m at the summit. A force-balance model suggests that the ice is almost linearly viscous but has a high viscosity. The model further suggests that basal sliding makes a larger contribution to the ice movement than does ice deformation. From 1970 to 1988. the average accumulation rate was 120 kg m−2a−1 at the centre, and between 1985 and 1989 the equilibrium-line elevation averaged 110m a.s.l. Analysis of chemical impurities in the surface snow suggests that the precipitation source is mainly local marine air masses and that human activity has already exerted a detectable influence on the local environment. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice cap Journal of Glaciology Nelson Island South Shetland Islands West Antarctica Université de Nantes: HAL-UNIV-NANTES Antarctic Nelson Island ENVELOPE(-59.050,-59.050,-62.300,-62.300) South Shetland Islands West Antarctica Journal of Glaciology 41 138 408 412
institution Open Polar
collection Université de Nantes: HAL-UNIV-NANTES
op_collection_id ftunivnantes
language English
topic [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
spellingShingle [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
Jiawen, Ren
Dahe, Qin
Petit, J.
Jouzel, J.
Wenti, Wang
Chen, Liu
Xiaojun, Wang
Songlin, Qian
Xiaoxiang, Wang
Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
topic_facet [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
description International audience The ice cap on Nelson Island in the South Shetland Islands, West Antarctica, was studied between 1985 and 1989. The ice cap has an average thickness of 120 m. it is temperate, exists under the sub-Antarctic maritime climate and almost completely covers the island. Owing to intense percolation of meltwater (and, to some extent, liquid precipitation), the snow-firn layer is in the soaked facies, with a firn-ice transition at a depth of 25-26 m at the summit. A force-balance model suggests that the ice is almost linearly viscous but has a high viscosity. The model further suggests that basal sliding makes a larger contribution to the ice movement than does ice deformation. From 1970 to 1988. the average accumulation rate was 120 kg m−2a−1 at the centre, and between 1985 and 1989 the equilibrium-line elevation averaged 110m a.s.l. Analysis of chemical impurities in the surface snow suggests that the precipitation source is mainly local marine air masses and that human activity has already exerted a detectable influence on the local environment.
author2 Laboratoire de Modélisation du Climat et de l'Environnement (LMCE)
format Article in Journal/Newspaper
author Jiawen, Ren
Dahe, Qin
Petit, J.
Jouzel, J.
Wenti, Wang
Chen, Liu
Xiaojun, Wang
Songlin, Qian
Xiaoxiang, Wang
author_facet Jiawen, Ren
Dahe, Qin
Petit, J.
Jouzel, J.
Wenti, Wang
Chen, Liu
Xiaojun, Wang
Songlin, Qian
Xiaoxiang, Wang
author_sort Jiawen, Ren
title Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
title_short Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
title_full Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
title_fullStr Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
title_full_unstemmed Glaciological studies on Nelson Island, South Shetland Islands, Antarctica
title_sort glaciological studies on nelson island, south shetland islands, antarctica
publisher HAL CCSD
publishDate 1995
url https://hal.archives-ouvertes.fr/hal-03334858
https://hal.archives-ouvertes.fr/hal-03334858/document
https://hal.archives-ouvertes.fr/hal-03334858/file/jg1995iawen408.pdf
https://doi.org/10.3189/S0022143000016270
long_lat ENVELOPE(-59.050,-59.050,-62.300,-62.300)
geographic Antarctic
Nelson Island
South Shetland Islands
West Antarctica
geographic_facet Antarctic
Nelson Island
South Shetland Islands
West Antarctica
genre Antarc*
Antarctic
Antarctica
Ice cap
Journal of Glaciology
Nelson Island
South Shetland Islands
West Antarctica
genre_facet Antarc*
Antarctic
Antarctica
Ice cap
Journal of Glaciology
Nelson Island
South Shetland Islands
West Antarctica
op_source ISSN: 0022-1430
EISSN: 1727-5652
Journal of Glaciology
https://hal.archives-ouvertes.fr/hal-03334858
Journal of Glaciology, International Glaciological Society, 1995, 41 (138), pp.408-412. ⟨10.3189/S0022143000016270⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.3189/S0022143000016270
hal-03334858
https://hal.archives-ouvertes.fr/hal-03334858
https://hal.archives-ouvertes.fr/hal-03334858/document
https://hal.archives-ouvertes.fr/hal-03334858/file/jg1995iawen408.pdf
doi:10.3189/S0022143000016270
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.3189/S0022143000016270
container_title Journal of Glaciology
container_volume 41
container_issue 138
container_start_page 408
op_container_end_page 412
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