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THE MIYAKE EVENT IN 993 CE RECORDED IN OAK SUB-ANNUAL TREE RINGS FROM KUJAWY (POLAND)

Published online by Cambridge University Press:  28 July 2022

Andrzej Rakowski*
Affiliation:
Institute of Physics, Center for Science and Education, Silesian University of Technology, Konarskiego 22B str., 44-100 Gliwice, Poland
Marek Krąpiec
Affiliation:
AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
Matthias Huels
Affiliation:
Leibniz-Laboratory for Radiometric Dating and Isotope Research, University Kiel, Max-Eyth-Str. 11-13, 24118 Kiel, Germany
Jacek Pawlyta
Affiliation:
AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
Damian Wiktorowski
Affiliation:
AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
*
*Corresponding author. Email: [email protected]

Abstract

This article presents measurements of the radiocarbon (14C) concentration in sub-annual tree rings. Samples of earlywood (EW) and latewood (LW) from dendrochronologically dated tree rings (English oak, Quercus robur) from Kujawy, near Kraków (Poland), spanning the years of 990–997 CE, are extracted and their 14C content is measured at the Center for Applied Isotope Studies at the University of Georgia, USA. The EW and LW data show a gradual increase in the Δ14C values between 991–995 CE, which are similar to those observed by Rakowski et al. (2018). An increase of 10.3 ± 2.6‰ in Δ14C for the EW data, and 8.6 ± 2.6‰ for the LW data has been recorded for this period. Using this data, it is possible to estimate the time period for when a major historical event occurred, which seems to have been in the late summer (September –2/+1 month) of 993 CE.

Type
Conference Paper
Copyright
© The Author(s), 2022. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona

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Footnotes

Selected Papers from the 3rd Radiocarbon in the Environment Conference, Gliwice, Poland, 5–9 July 2021

References

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