A study of the social structure in Kofun Period through the research of the group mounded tumuli in Kibi Region

该项目的目的是推进对Kibi地区土丘群的研究。因此，我收集了冈山县群冢的发掘报告。利用移动的GPS对群冢进行了调查，得到了群冢的坐标，并将数据进行了地理信息系统的分析，制作了吉备地区群冢的分布图。在本项目期间，完成了冈山、宗座、仓敷、赤岩、津山市群冢的地名表。根据这张表，这一地区大约有5000座坟墓。由此得出了利用移动的GPS是获取群丘墓坐标的有效方法的前景。

The purpose of this project was that the study of the group mounded tumuli in Kibi region was advanced. Therefore, I collected the excavation reports of the group mounded tumuli in Okayama Prefecture. And I investigated the group mounded tumuli using the mobile GPS to get the coordinates, and the data was put on the analysis of the Geographical Information System to make the distribution map of the group mounded tumuli in Kibi region.In the term of this project, I completed the name of a place table of the group mounded tumuli in Okayama, Soja, Kurashiki, Akaiwa and Tsuyama City. According to this table, there are about 5, 000 tumuli in this area. And then, I obtained the prospect that using mobile GPS was the effective method to get the coordinates of the group mound tumuli.