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 EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2)...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-3-485-2007 https://cp.copernicus.org/articles/3/485/2007/ |
id |
ftcopernicus:oai:publications.copernicus.org:cp6265 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:cp6265 2023-05-15T13:36:36+02:00 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. 2018-09-27 application/pdf https://doi.org/10.5194/cp-3-485-2007 https://cp.copernicus.org/articles/3/485/2007/ eng eng doi:10.5194/cp-3-485-2007 https://cp.copernicus.org/articles/3/485/2007/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-3-485-2007 2020-07-20T16:27:02Z 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. Text Antarc* Antarctica East Antarctica EPICA ice core Copernicus Publications: E-Journals Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctica Climate of the Past 3 3 485 497 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
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 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 |
Text |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-3-485-2007 https://cp.copernicus.org/articles/3/485/2007/ |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Dome Fuji East Antarctica |
geographic_facet |
Dome Fuji East Antarctica |
genre |
Antarc* Antarctica East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctica East Antarctica EPICA ice core |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-3-485-2007 https://cp.copernicus.org/articles/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_ |
1766081501638688768 |