The EDC3 chronology for the EPICA Dome C ice core

F. Parrenin, J.-M. Barnola, J. Beer, T. Blunier, E. Castellano, J. Chappellaz, G. Dreyfus, H. Fischer, S. Fujita, J. Jouzel, K. Kawamura, B. Lemieux-Dudon, L. Loulergue, V. Masson-Delmotte, B. Narcisi, J.-R. Petit, G. Raisbeck, D. Raynaud, U. Ruth, J. SchwanderM. Severi, R. Spahni, J.P. Steffensen, A. Svensson, R. Udisti, C. Waelbroeck, E. Wolff

Research output: Contribution to journalArticle

258 Citations (Scopus)

Abstract

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 MIS 11 and accurate absolute ages with a maximum uncertainty of 6 kyr back to 800 kyr.
Original languageEnglish
Pages (from-to)485 - 497
Number of pages13
JournalClimate of the Past
Volume3
Issue number3
DOIs
Publication statusPublished - 2007
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Stratigraphy
  • Palaeontology

Cite this

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., ... Wolff, E. (2007). The EDC3 chronology for the EPICA Dome C ice core. Climate of the Past, 3(3), 485 - 497. https://doi.org/10.5194/cp-3-485-2007