Modelling of the densification of polar firn: characterization of the snow-firn transition
International audience The transformation of dry snow to firn is described by the transition between densification by deformationless restacking and densification by power-law creep.The observed decrease with temperature of the density at the snow- firn transition seems to result from the competitio...
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ftccsdartic:oai:HAL:hal-00927005v1 2023-05-15T13:29:42+02:00 Modelling of the densification of polar firn: characterization of the snow-firn transition Arnaud, Laurent Lipenkov, Volodya Barnola, Jean-Marc Gay, Michel Duval, Paul Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Chamonix, France 1997 https://hal.archives-ouvertes.fr/hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005/document https://hal.archives-ouvertes.fr/hal-00927005/file/igs_annals_vol26_year1998_pg39-44.pdf en eng HAL CCSD hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005/document https://hal.archives-ouvertes.fr/hal-00927005/file/igs_annals_vol26_year1998_pg39-44.pdf info:eu-repo/semantics/OpenAccess Annals of Glaciology International Symposium on Snow and Avalanches https://hal.archives-ouvertes.fr/hal-00927005 International Symposium on Snow and Avalanches, 1997, Chamonix, France. pp.39-44 [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV] info:eu-repo/semantics/conferenceObject Conference papers 1997 ftccsdartic 2021-10-24T14:08:09Z International audience The transformation of dry snow to firn is described by the transition between densification by deformationless restacking and densification by power-law creep.The observed decrease with temperature of the density at the snow- firn transition seems to result from the competition between grain-boundary sliding and power-law creep. These two densification processess occur concurrenLly in snow, although there are probably micro-regions in which sliding alone occurs. Validation ofa geometrical densifi- cation model developed for ceramics has been obtained from densification data from several Antarctic and Greenland sites and from the characterization of the structure of polar firn. Conference Object Annals of Glaciology Antarc* Antarctic Greenland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Greenland |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV] |
spellingShingle |
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV] Arnaud, Laurent Lipenkov, Volodya Barnola, Jean-Marc Gay, Michel Duval, Paul Modelling of the densification of polar firn: characterization of the snow-firn transition |
topic_facet |
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV] |
description |
International audience The transformation of dry snow to firn is described by the transition between densification by deformationless restacking and densification by power-law creep.The observed decrease with temperature of the density at the snow- firn transition seems to result from the competition between grain-boundary sliding and power-law creep. These two densification processess occur concurrenLly in snow, although there are probably micro-regions in which sliding alone occurs. Validation ofa geometrical densifi- cation model developed for ceramics has been obtained from densification data from several Antarctic and Greenland sites and from the characterization of the structure of polar firn. |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) |
format |
Conference Object |
author |
Arnaud, Laurent Lipenkov, Volodya Barnola, Jean-Marc Gay, Michel Duval, Paul |
author_facet |
Arnaud, Laurent Lipenkov, Volodya Barnola, Jean-Marc Gay, Michel Duval, Paul |
author_sort |
Arnaud, Laurent |
title |
Modelling of the densification of polar firn: characterization of the snow-firn transition |
title_short |
Modelling of the densification of polar firn: characterization of the snow-firn transition |
title_full |
Modelling of the densification of polar firn: characterization of the snow-firn transition |
title_fullStr |
Modelling of the densification of polar firn: characterization of the snow-firn transition |
title_full_unstemmed |
Modelling of the densification of polar firn: characterization of the snow-firn transition |
title_sort |
modelling of the densification of polar firn: characterization of the snow-firn transition |
publisher |
HAL CCSD |
publishDate |
1997 |
url |
https://hal.archives-ouvertes.fr/hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005/document https://hal.archives-ouvertes.fr/hal-00927005/file/igs_annals_vol26_year1998_pg39-44.pdf |
op_coverage |
Chamonix, France |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Annals of Glaciology Antarc* Antarctic Greenland |
genre_facet |
Annals of Glaciology Antarc* Antarctic Greenland |
op_source |
Annals of Glaciology International Symposium on Snow and Avalanches https://hal.archives-ouvertes.fr/hal-00927005 International Symposium on Snow and Avalanches, 1997, Chamonix, France. pp.39-44 |
op_relation |
hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005 https://hal.archives-ouvertes.fr/hal-00927005/document https://hal.archives-ouvertes.fr/hal-00927005/file/igs_annals_vol26_year1998_pg39-44.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766002191001190400 |