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| Titel |
The EDC3 chronology for the EPICA Dome C ice core |
| VerfasserIn |
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. Schwander, M. Severi, R. Spahni, J. P. Steffensen, A. Svensson, R. Udisti, C. Waelbroeck, E. Wolff |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 3, no. 3 ; Nr. 3, no. 3 (2007-08-17), S.485-497 |
| Datensatznummer |
250001076
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| Publikation (Nr.) |
 copernicus.org/cp-3-485-2007.pdf |
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| Zusammenfassung |
| 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. |
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