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Increase in Radiocarbon Concentration in Tree Rings from Kujawy Village (Se Poland) Around Ad 993–994

Published online by Cambridge University Press:  10 September 2018

Andrzej Z Rakowski*
Affiliation:
Institute of Physics – Center for Science and Education, Silesian University of Technology, Konarskiego str 22B, 44-100Gliwice, Poland
Marek Krąpiec
Affiliation:
AGH University of Science and Technology, Mickiewicza Av. 30, 30-059Krakow, Poland
Mathias Huels
Affiliation:
Leibniz-Laboratory for Radiometric Dating and Isotope Research, University of Kiel, Max-Eyth-Str. 11-13, 24118Kiel, Germany
Jacek Pawlyta
Affiliation:
Institute of Physics – Center for Science and Education, Silesian University of Technology, Konarskiego str 22B, 44-100Gliwice, Poland
Mathieu Boudin
Affiliation:
Royal Institute for Cultural Heritage, Department of Laboratories, Brussels, Belgium
*
*Corresponding author. Email: arakowski@polsl.pl.

Abstract

An increase in atmospheric radiocarbon (14C) content of about 11.3‰ in the period AD 993–994 was observed in annual tree rings from Japanese cedar (Cryptomeria japonica) and Hinoki cypress (Chamaecyparis obtusa) (Miyake et al. 2013, 2014). Single-year samples of dendrochronologically dated tree rings (English oak, Quercus robur) from Kujawy, a village near Krakow (SE Poland), spanning the years AD 981–1000, were collected, and their 14C content was measured using the AMS system in the Leibniz Laboratory. The results clearly show an increase of 6.2±1.6‰ in the 14C concentration in tree rings between AD 993 and 994, with a maximum increase of 10.9±1.7‰ between AD 991 and 994.

Type
Trees
Copyright
© 2018 by the Arizona Board of Regents on behalf of the University of Arizona 

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