HAKOZAKI Masataka

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 13^th century B.C. to 6^th 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.