Provenance study of Yayoi period bronze object using lead isotope method

本次研究工作的目的是在运用考古和历史方法的基础上，运用科学的方法对日本早期青铜器文化进行梳理。日本的青铜器文化始于公元前3世纪左右。从那时起，青铜文化在日本发展起来。利用铅同位素比值和青铜器的化学成分，可以用科学的方法解释膨胀过程。结果大致如下：日本引进青铜器的第一阶段是从韩国青铜器开始的。从那时起，华北青铜器在弥生时代的后期全部出现。古坟时代以后，中国南方的青铜器传入日本。这种趋势在九州北部和近畿地区已经确立，但其他地区则不太明显。作为下一步的研究工作，不仅要对中心地区的样品进行测量，还要对偏远地区的样品进行测量。

The aim of this research work is to make clear the early bronze culture in Japan using scientific method in addition to the archaeological and historical methods.Bronze culture in Japan started at around BC3 century. Since that time, the bronze culture developed in Japan. The expanding process can be explained with the scientific methods using lead isotope ratio and chemical composition of bronze objects.The results is concluded roughly as follows : At the first stage of introduction of bronze in Japan was started from Korean bronze. Since then, North Chinese bronze came in whole of the lest of Yayoi period. After Kofun period, Southern Chinese bronze was brought in Japan. This trend is established in North Kyushu and Kinki area, but the other part was not so clear. As next research work, it will be worthwhile to measure the samples from not only center part but also the remote region.