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Fine Structure and Reproducibility of Radiocarbon Ages of Middle to Early Modern Japanese Tree Rings

Published online by Cambridge University Press:  28 December 2017

Minoru Sakamoto*
National Museum of Japanese History, Sakura, Japan SOKENDAI, The Graduate University for Advanced Studies, Sakura, Japan
Masataka Hakozaki
National Museum of Japanese History, Sakura, Japan
Nanae Nakao
Yamagata University, Faculty of Science, Yamagata, Japan
Takeshi Nakatsuka
Research Institute for Humanity and Nature, Kyoto, Japan
*Corresponding author. Email:


This study carried out accelerator mass spectrometry radiocarbon (AMS 14C) measurement of Japanese tree rings dating from the middle to early modern eras to investigate calibration curve fine structure. Tree-ring ages were determined by dendrochronology or δ18O chronology for Japanese trees. 14C ages from the 15th century to the middle of the 17th century followed the IntCal13 calibration curve within measurement error. Different patterns of fluctuations during the latter half of the 17th century to the early the 18th century were observed in different tree samples. In the 19th century, patterns of 14C ages of different samples appeared similar but did not exactly match each other.

Method Development
© 2017 by the Arizona Board of Regents on behalf of the University of Arizona 

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Selected Papers from the 8th Radiocarbon & Archaeology Symposium, Edinburgh, UK, 27 June–1 July 2016.



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