| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
Tremendous numbers of glass beads were excavated from Kofun in Yayoi and Kofun periods in Japan. They were all imported from somewhere in Eurasia.The purpose of the present study is to reveal the origin of the glass excavated from Kofun. For quantitative analysis of glass beads we used a portable X-ray fluorescence spectrometer suitable for glass analysis developed by us. We brought the instrument to the museums in Japan and in abroad and measured the chemical compositions of the glass samples. Our analyses suggest that the glass of the same origin distribute over South Asia, Southeast Asia, East Asia and Central Asia, and to Japan. We have successfully revealed the transport of the beads from Kyushu to Honshu through Tohoku to Hokkaido. In the early modern times it was inferred from our glass analysis that there were glass trades between China and the Far East, suggesting the possibility that some of those glasses were transported to Hokkaido through the Ainu culture.
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