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

TitleTALDICE-1 age scale of the Talos Dome deep ice core, East Antarctica
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2011
AuthorsBuiron, D., Chappellaz J., Stenni B., Frezzotti M, Baumgartner M., Capron E., Landais A., Lemieux-Dudon B., Masson-Delmotte V., Montagnat M., Parrenin F., and Schilt A.
JournalClimate of the Past
Volume7
Pagination1-16
ISSN18149324
Keywordsantarctica, Arctic, chronology, dome, East Antarctica, Greenland, Ice core, last deglaciation, marine isotope stage, one-dimensional modeling, paleoclimate, paleoenvironment, Stratigraphy, timescale, Uncertainty analysis
Abstract

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. © Author(s) 2011.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-78651427886&doi=10.5194%2fcp-7-1-2011&partnerID=40&md5=1009de923b50bcc384e13a9787fe0691
DOI10.5194/cp-7-1-2011
Citation KeyBuiron20111