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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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 |
_version_ |
1766264868915118080 |