National Museum of Japanese History
Project Assistant Professor
Up to now, I've worked on building the long-term tree-ring chronologies (tree-ring width and oxygen isotope ratio) and the calibration curves of radiocarbon date required for high-precision age measurement of Japanese materials by using the living trees, the excavated woods and the bog-wood in Japan.

I'm currently applying the oxygen isotopic dendrochronology and the radiocarbon dating to the South Korean excavated woods (from 13th century B.C. to 6th century A.D.) for the age determination and the climate reconstruction.

In this project, I aim to perform high precision/high time resolution climate reconstruction of North East Asia using Japanese and Korean tree-ring data acquired from the above studies. And then, also, I'm hoping to clarify the association between climate and ancient social changes.