*Kazuhiro Anraku1, Akira Hayashida2, Ikuko Kitaba3, Richard A. Staff4, Tsuyoshi Haraguchi5, Yoshitsugu Shinozuka6, Kazuyoshi Yamada7, Katsuya Gotanda8, Hitoshi Yonenobu9
(1.Graduate School of Science and Engineering, Doshisha University, 2.Department of Environmental Systems Science, Doshisha University, 3.Research Centre for Palaleoclimatology, Ritsumeikan University, 4.Research Laboratory for Archaeology and the History of Art, University of Oxford, 5.Department of Geosciences,Graduate School of Science,Osaka City University, 6.Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 7.Museum of Natural and Environmental history, Shizuoka, 8.Faculty of Polycy Informatics, Chiba University of Commerce, 9.Graduate School of Education, Naruto University of Education)