Article

Findings from an in-depth annual tree-ring radiocarbon inter-comparison

Citation

Bayliss A, Wacker L, Scott EM, Brown D, Bard E, Bollhalder S, Friedrich M, Capano M, Cherkinsky A, Chivall D, Culleton BJ, Dee MW, Friedrich R, Hodgins GWL & Hogg A (2020) Findings from an in-depth annual tree-ring radiocarbon inter-comparison. Radiocarbon, 62 (4), pp. 873-882. https://doi.org/10.1017/RDC.2020.49

Abstract
The radiocarbon calibration curve so far contains annually resolved data only for a short period of time. With accelerator mass spectrometry (AMS) matching the precision of decay counting, it is now possible to efficiently produce large datasets of annual resolution for calibration purposes using small amounts of wood. The radiocarbon inter-comparison on single-year tree-ring samples presented here is the first to investigate specifically possible offsets between AMS laboratories at high precision. The results show that AMS laboratories are capable of measuring samples of Holocene age with an accuracy and precision that is comparable or even goes beyond what is possible with decay counting, even though they require a thousand times less wood. It also shows that not all AMS laboratories always produce results that are consistent with their stated uncertainties. The long-term benefits of studies of this kind are more accurate radiocarbon measurements with, in the future, better quantified uncertainties.

Notes
Additional co-authors: Douglas J Kennett, Timothy D J Knowles, Margot Kuitems, Todd E Lange, Fusa Miyake, Marie-Josée Nadeau, Toshio Nakamura, J Philip Naysmith, Jesper Olsen, Takayuki Omori, Fiona Petchey, Bente Philippsen, Christopher Bronk Ramsey, G V Ravi Prasad, Martin Seiler, John Southon, Richard Staff, Thibault Tuna

Journal
Radiocarbon: Volume 62, Issue 4

StatusPublished
Publication date31/08/2020
Publication date online30/09/2020
Date accepted by journal12/03/2020
URLhttp://hdl.handle.net/1893/31177
ISSN0033-8222
eISSN1945-5755

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