Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr
International audience We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow mo...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-02395946 https://hal.science/hal-02395946/document https://hal.science/hal-02395946/file/tc-12-1401-2018.pdf https://doi.org/10.5194/tc-12-1401-2018 |
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ftunigrenoble:oai:HAL:hal-02395946v1 2024-05-12T07:55:54+00:00 Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr Cavitte, Marie, M Parrenin, Frédéric Ritz, Catherine Young, Duncan, A van Liefferinge, Brice Blankenship, Donald, D Frezzotti, Massimo Roberts, Jason Institute for Geophysics University of Texas at Dallas Richardson (UT Dallas) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Observatoire des Sciences de l'Univers de Grenoble (OSUG ) 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 Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA) Centro Ricerche Casaccia The University of Queensland (UQ All campuses : Brisbane, Dutton Park Gatton, Herston, St Lucia and other locations ) 2018 https://hal.science/hal-02395946 https://hal.science/hal-02395946/document https://hal.science/hal-02395946/file/tc-12-1401-2018.pdf https://doi.org/10.5194/tc-12-1401-2018 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-12-1401-2018 hal-02395946 https://hal.science/hal-02395946 https://hal.science/hal-02395946/document https://hal.science/hal-02395946/file/tc-12-1401-2018.pdf doi:10.5194/tc-12-1401-2018 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-02395946 The Cryosphere, 2018, 12 (4), pp.1401-1414. ⟨10.5194/tc-12-1401-2018⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2018 ftunigrenoble https://doi.org/10.5194/tc-12-1401-2018 2024-04-18T03:20:18Z International audience We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100s km) surface accumulation gradient is spatially stable through the last 73 kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10 s km) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial. Article in Journal/Newspaper Antarc* Antarctica East Antarctica The Cryosphere Université Grenoble Alpes: HAL East Antarctica The Cryosphere 12 4 1401 1414 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Cavitte, Marie, M Parrenin, Frédéric Ritz, Catherine Young, Duncan, A van Liefferinge, Brice Blankenship, Donald, D Frezzotti, Massimo Roberts, Jason Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100s km) surface accumulation gradient is spatially stable through the last 73 kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10 s km) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial. |
author2 |
Institute for Geophysics University of Texas at Dallas Richardson (UT Dallas) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Observatoire des Sciences de l'Univers de Grenoble (OSUG ) 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 Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA) Centro Ricerche Casaccia The University of Queensland (UQ All campuses : Brisbane, Dutton Park Gatton, Herston, St Lucia and other locations ) |
format |
Article in Journal/Newspaper |
author |
Cavitte, Marie, M Parrenin, Frédéric Ritz, Catherine Young, Duncan, A van Liefferinge, Brice Blankenship, Donald, D Frezzotti, Massimo Roberts, Jason |
author_facet |
Cavitte, Marie, M Parrenin, Frédéric Ritz, Catherine Young, Duncan, A van Liefferinge, Brice Blankenship, Donald, D Frezzotti, Massimo Roberts, Jason |
author_sort |
Cavitte, Marie, M |
title |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_short |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_full |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_fullStr |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_full_unstemmed |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_sort |
accumulation patterns around dome c, east antarctica, in the last 73 kyr |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02395946 https://hal.science/hal-02395946/document https://hal.science/hal-02395946/file/tc-12-1401-2018.pdf https://doi.org/10.5194/tc-12-1401-2018 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-02395946 The Cryosphere, 2018, 12 (4), pp.1401-1414. ⟨10.5194/tc-12-1401-2018⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-12-1401-2018 hal-02395946 https://hal.science/hal-02395946 https://hal.science/hal-02395946/document https://hal.science/hal-02395946/file/tc-12-1401-2018.pdf doi:10.5194/tc-12-1401-2018 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-12-1401-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
4 |
container_start_page |
1401 |
op_container_end_page |
1414 |
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1798835776454131712 |