The EDC3 chronology for the EPICA Dome C ice core
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 official EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow mode...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://doi.org/10.5194/cp-3-485-2007 |
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fteawag:oai:dora:eawag_5520 2024-09-15T17:48:22+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, V. 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. 2007 https://doi.org/10.5194/cp-3-485-2007 eng eng Copernicus Climate of the Past--Clim. Past--journals:563--1814-9324--1814-9332 eawag:5520 journal id: journals:563 issn: 1814-9324 e-issn: 1814-9332 ut: 000249785600011 local: 11071 scopus: 2-s2.0-34548071697 doi:10.5194/cp-3-485-2007 Text Journal Article 2007 fteawag https://doi.org/10.5194/cp-3-485-2007 2024-08-05T03:04:28Z 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 official 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 DORA Eawag Climate of the Past 3 3 485 497 |
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Open Polar |
collection |
DORA Eawag |
op_collection_id |
fteawag |
language |
English |
description |
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 official 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. |
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, V. 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. |
spellingShingle |
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, V. 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 |
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, V. 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 |
Copernicus |
publishDate |
2007 |
url |
https://doi.org/10.5194/cp-3-485-2007 |
genre |
Antarc* Antarctica East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctica East Antarctica EPICA ice core |
op_relation |
Climate of the Past--Clim. Past--journals:563--1814-9324--1814-9332 eawag:5520 journal id: journals:563 issn: 1814-9324 e-issn: 1814-9332 ut: 000249785600011 local: 11071 scopus: 2-s2.0-34548071697 doi:10.5194/cp-3-485-2007 |
op_doi |
https://doi.org/10.5194/cp-3-485-2007 |
container_title |
Climate of the Past |
container_volume |
3 |
container_issue |
3 |
container_start_page |
485 |
op_container_end_page |
497 |
_version_ |
1810289513191178240 |