Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau
International audience The mass balance of ice sheets is an intensively studied topic in the context of global change and sea- level rise. However - particularly in Antarctica - obtaining mass balance estimates remains difficult due to various logistical problems. In the framework of the TASTE-IDEA...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094/document https://hal-insu.archives-ouvertes.fr/insu-00844094/file/tc-6-1345-2012.pdf https://doi.org/10.5194/tc-6-1345-2012 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Verfaillie, D. Fily, M. Le Meur, E. Magand, O. Jourdain, Benjamin Arnaud, L. Favier, V. Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The mass balance of ice sheets is an intensively studied topic in the context of global change and sea- level rise. However - particularly in Antarctica - obtaining mass balance estimates remains difficult due to various logistical problems. In the framework of the TASTE-IDEA (Trans-Antarctic Scientific Traverses Expeditions - Ice Divide of East Antarctica) program, an International Polar Year project, continuous ground penetrating radar (GPR) measurements were carried out during a traverse in Adelie Land (East Antarctica) during the 2008-2009 austral summer between the Italian-French Dome C (DC) polar plateau site and French Dumont D'Urville (DdU) coastal station. The aim of this study was to process and interpret GPR data in terms of snow accumulation, to analyse its spatial and temporal variability and compare it with historical data and modelling. The focus was on the last 300 yr, from the pre- industrial period to recent times. Beta-radioactivity counting and gamma spectrometry were applied to cores at the LGGE laboratory, providing a depth-age calibration for radar measurements. Over the 600 km of usable GPR data, depth and snow accumulation were determined with the help of three distinct layers visible on the radargrams ( ≈ 1730, 1799 and 1941 AD). Preliminary results reveal a gradual increase in accumulation towards the coast (from ≈ 3 cm w.e. a − 1 at Dome C to ≈ 17 cm w.e. a − 1 at the end of the transect) and previously undocumented undulating structures between 300 and 600 km from DC. Results agree fairly well with data from previous studies and modelling. Drawing final conclusions on temporal variations is difficult because of the margin of error introduced by density estimation. This study should have various applications, including model validation. |
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) |
format |
Article in Journal/Newspaper |
author |
Verfaillie, D. Fily, M. Le Meur, E. Magand, O. Jourdain, Benjamin Arnaud, L. Favier, V. |
author_facet |
Verfaillie, D. Fily, M. Le Meur, E. Magand, O. Jourdain, Benjamin Arnaud, L. Favier, V. |
author_sort |
Verfaillie, D. |
title |
Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
title_short |
Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
title_full |
Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
title_fullStr |
Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
title_full_unstemmed |
Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau |
title_sort |
snow accumulation variability derived from radar and firn core data along a 600 km transect in adelie land, east antarctic plateau |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094/document https://hal-insu.archives-ouvertes.fr/insu-00844094/file/tc-6-1345-2012.pdf https://doi.org/10.5194/tc-6-1345-2012 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(0.000,0.000,-90.000,-90.000) |
geographic |
Antarctic Austral Dumont d'Urville Dumont-d'Urville East Antarctica Polar Plateau |
geographic_facet |
Antarctic Austral Dumont d'Urville Dumont-d'Urville East Antarctica Polar Plateau |
genre |
Adelie Land Antarc* Antarctic Antarctica East Antarctica International Polar Year The Cryosphere |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica East Antarctica International Polar Year The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-00844094 The Cryosphere, Copernicus 2012, 6, pp.1345- 1358. ⟨10.5194/tc-6-1345-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-6-1345-2012 insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094/document https://hal-insu.archives-ouvertes.fr/insu-00844094/file/tc-6-1345-2012.pdf doi:10.5194/tc-6-1345-2012 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-6-1345-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
6 |
container_start_page |
1345 |
op_container_end_page |
1358 |
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1766355692252299264 |
spelling |
ftccsdartic:oai:HAL:insu-00844094v1 2023-05-15T13:04:15+02:00 Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau Verfaillie, D. Fily, M. Le Meur, E. Magand, O. Jourdain, Benjamin Arnaud, L. Favier, V. 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) 2012-11-16 https://hal-insu.archives-ouvertes.fr/insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094/document https://hal-insu.archives-ouvertes.fr/insu-00844094/file/tc-6-1345-2012.pdf https://doi.org/10.5194/tc-6-1345-2012 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-6-1345-2012 insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094 https://hal-insu.archives-ouvertes.fr/insu-00844094/document https://hal-insu.archives-ouvertes.fr/insu-00844094/file/tc-6-1345-2012.pdf doi:10.5194/tc-6-1345-2012 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-00844094 The Cryosphere, Copernicus 2012, 6, pp.1345- 1358. ⟨10.5194/tc-6-1345-2012⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2012 ftccsdartic https://doi.org/10.5194/tc-6-1345-2012 2021-10-24T14:50:42Z International audience The mass balance of ice sheets is an intensively studied topic in the context of global change and sea- level rise. However - particularly in Antarctica - obtaining mass balance estimates remains difficult due to various logistical problems. In the framework of the TASTE-IDEA (Trans-Antarctic Scientific Traverses Expeditions - Ice Divide of East Antarctica) program, an International Polar Year project, continuous ground penetrating radar (GPR) measurements were carried out during a traverse in Adelie Land (East Antarctica) during the 2008-2009 austral summer between the Italian-French Dome C (DC) polar plateau site and French Dumont D'Urville (DdU) coastal station. The aim of this study was to process and interpret GPR data in terms of snow accumulation, to analyse its spatial and temporal variability and compare it with historical data and modelling. The focus was on the last 300 yr, from the pre- industrial period to recent times. Beta-radioactivity counting and gamma spectrometry were applied to cores at the LGGE laboratory, providing a depth-age calibration for radar measurements. Over the 600 km of usable GPR data, depth and snow accumulation were determined with the help of three distinct layers visible on the radargrams ( ≈ 1730, 1799 and 1941 AD). Preliminary results reveal a gradual increase in accumulation towards the coast (from ≈ 3 cm w.e. a − 1 at Dome C to ≈ 17 cm w.e. a − 1 at the end of the transect) and previously undocumented undulating structures between 300 and 600 km from DC. Results agree fairly well with data from previous studies and modelling. Drawing final conclusions on temporal variations is difficult because of the margin of error introduced by density estimation. This study should have various applications, including model validation. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica East Antarctica International Polar Year The Cryosphere Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Austral Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica Polar Plateau ENVELOPE(0.000,0.000,-90.000,-90.000) The Cryosphere 6 6 1345 1358 |