The EDC3 chronology for the EPICA Dome C ice core
International audience The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechan...
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ftceafr:oai:HAL:hal-04110187v1 2024-09-15T17:46:26+00:00 The EDC3 chronology for the EPICA Dome C ice core Parrenin, F. Barnola, J. -M. Beer, J. Blunier, T. Castellano, E. Chappellaz, J. Dreyfus, G. Fischer, H. Fujita, S. Jouzel, J. Kawamura, K. Lemieux-Dudon, B. Loulergue, L. Masson-Delmotte, Valérie Narcisi, B. Petit, J. -R. Raisbeck, G. Raynaud, D. Ruth, U. Schwander, J. Severi, M. Spahni, R. Steffensen, J. P. Svensson, A. Udisti, R. Waelbroeck, C. Wolff, E. Laboratoire des Sciences du Climat et de l'Environnement (LSCE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2007 https://hal.science/hal-04110187 https://doi.org/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 hal-04110187 https://hal.science/hal-04110187 BIBCODE: 2007CliPa.3.485P doi:10.5194/cp-3-485-200710.5194/cpd-3-575-2007 Climate of the Past https://hal.science/hal-04110187 Climate of the Past, 2007, 3, pp.485-497. ⟨10.5194/cp-3-485-200710.5194/cpd-3-575-2007⟩ Earth Science [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2007 ftceafr https://doi.org/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 2024-07-22T13:06:24Z International audience The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2) a set of independent age markers along the core. These are obtained by pattern matching of recorded parameters to either absolutely dated paleoclimatic records, or to insolation variations. We show that this new time scale is in excellent agreement with the Dome Fuji and Vostok ice core time scales back to 100 kyr within 1 kyr. Discrepancies larger than 3 kyr arise during MIS 5.4, 5.5 and 6, which points to anomalies in either snow accumulation or mechanical flow during these time periods. We estimate that EDC3 gives accurate event durations within 20% (2σ) back to MIS11 and accurate absolute ages with a maximum uncertainty of 6 kyr back to 800 kyr. Article in Journal/Newspaper Antarc* Antarctica East Antarctica EPICA ice core HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
Earth Science [SDU]Sciences of the Universe [physics] |
spellingShingle |
Earth Science [SDU]Sciences of the Universe [physics] Parrenin, F. Barnola, J. -M. Beer, J. Blunier, T. Castellano, E. Chappellaz, J. Dreyfus, G. Fischer, H. Fujita, S. Jouzel, J. Kawamura, K. Lemieux-Dudon, B. Loulergue, L. Masson-Delmotte, Valérie Narcisi, B. Petit, J. -R. Raisbeck, G. Raynaud, D. Ruth, U. Schwander, J. Severi, M. Spahni, R. Steffensen, J. P. Svensson, A. Udisti, R. Waelbroeck, C. Wolff, E. The EDC3 chronology for the EPICA Dome C ice core |
topic_facet |
Earth Science [SDU]Sciences of the Universe [physics] |
description |
International audience The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2) a set of independent age markers along the core. These are obtained by pattern matching of recorded parameters to either absolutely dated paleoclimatic records, or to insolation variations. We show that this new time scale is in excellent agreement with the Dome Fuji and Vostok ice core time scales back to 100 kyr within 1 kyr. Discrepancies larger than 3 kyr arise during MIS 5.4, 5.5 and 6, which points to anomalies in either snow accumulation or mechanical flow during these time periods. We estimate that EDC3 gives accurate event durations within 20% (2σ) back to MIS11 and accurate absolute ages with a maximum uncertainty of 6 kyr back to 800 kyr. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement (LSCE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Parrenin, F. Barnola, J. -M. Beer, J. Blunier, T. Castellano, E. Chappellaz, J. Dreyfus, G. Fischer, H. Fujita, S. Jouzel, J. Kawamura, K. Lemieux-Dudon, B. Loulergue, L. Masson-Delmotte, Valérie Narcisi, B. Petit, J. -R. Raisbeck, G. Raynaud, D. Ruth, U. Schwander, J. Severi, M. Spahni, R. Steffensen, J. P. Svensson, A. Udisti, R. Waelbroeck, C. Wolff, E. |
author_facet |
Parrenin, F. Barnola, J. -M. Beer, J. Blunier, T. Castellano, E. Chappellaz, J. Dreyfus, G. Fischer, H. Fujita, S. Jouzel, J. Kawamura, K. Lemieux-Dudon, B. Loulergue, L. Masson-Delmotte, Valérie Narcisi, B. Petit, J. -R. Raisbeck, G. Raynaud, D. Ruth, U. Schwander, J. Severi, M. Spahni, R. Steffensen, J. P. Svensson, A. Udisti, R. Waelbroeck, C. Wolff, E. |
author_sort |
Parrenin, F. |
title |
The EDC3 chronology for the EPICA Dome C ice core |
title_short |
The EDC3 chronology for the EPICA Dome C ice core |
title_full |
The EDC3 chronology for the EPICA Dome C ice core |
title_fullStr |
The EDC3 chronology for the EPICA Dome C ice core |
title_full_unstemmed |
The EDC3 chronology for the EPICA Dome C ice core |
title_sort |
edc3 chronology for the epica dome c ice core |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-04110187 https://doi.org/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 |
genre |
Antarc* Antarctica East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctica East Antarctica EPICA ice core |
op_source |
Climate of the Past https://hal.science/hal-04110187 Climate of the Past, 2007, 3, pp.485-497. ⟨10.5194/cp-3-485-200710.5194/cpd-3-575-2007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 hal-04110187 https://hal.science/hal-04110187 BIBCODE: 2007CliPa.3.485P doi:10.5194/cp-3-485-200710.5194/cpd-3-575-2007 |
op_doi |
https://doi.org/10.5194/cp-3-485-200710.5194/cpd-3-575-2007 |
_version_ |
1810494583312744448 |