TALDICE-1 age scale of the Talos Dome deep ice core, East Antarctica

A new deep ice core drilling program, TALDICE, has been successfully handled by a European team at Talos Dome, in the Ross Sea sector of East Antarctica, down to 1620 m depth. Using stratigraphic markers and a new inverse method, we produce the first official chronology of the ice core, called TALDI...

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Bibliographic Details
Published in:Climate of the Past
Main Authors: Buiron, D., Chappellaz, J., Stenni, B., Frezzotti, M., Baumgartner, M., Capron, E., Landais, A., Lemieux-Dudon, B., Masson-Delmotte, V., Montagnat, M., Parrenin, F., Schilt, A.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2011
Subjects:
article
Verlagsveröffentlichung
Antarctic
East Antarctica
Greenland
Ross Sea
Talos Dome
Antarc*
Antarctica
ice core
Online Access:https://doi.org/10.5194/cp-7-1-2011
https://noa.gwlb.de/receive/cop_mods_00027969
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00027924/cp-7-1-2011.pdf
https://cp.copernicus.org/articles/7/1/2011/cp-7-1-2011.pdf
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Summary:A new deep ice core drilling program, TALDICE, has been successfully handled by a European team at Talos Dome, in the Ross Sea sector of East Antarctica, down to 1620 m depth. Using stratigraphic markers and a new inverse method, we produce the first official chronology of the ice core, called TALDICE-1. We show that it notably improves an a priori chronology resulting from a one-dimensional ice flow model. It is in agreement with a posteriori controls of the resulting accumulation rate and thinning function along the core. An absolute uncertainty of only 300 yr is obtained over the course of the last deglaciation. This uncertainty remains lower than 600 yr over Marine Isotope Stage 3, back to 50 kyr BP. The phasing of the TALDICE ice core climate record with respect to the central East Antarctic plateau and Greenland records can thus be determined with a precision allowing for a discussion of the mechanisms at work at sub-millennial time scales.

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