*Akihiro Sasaoka¹, Takashi Nakamura², Genki Nakanishi³ (1.Department of Environment Systems,Faculty of Geo-enviromental Science,Rissho University, 2.International Research Center for River Basin Environment, University of YAMANASHI, 3.Special Master Course Program on International River Basin Environmental Science The University of Yamanashi)

*Genki Nakanishi^1,2, Nishida Kei², Takashi Nakamura², Kazuyoshi Asai³ (1.Special Master Course Program on International River Basin Environmental Science The University of Yamanashi, 2.Interdisciplinary Centre for River Basin Environment, University of Yamanshi, 3.Geo science Laboratory)

*Kazuyoshi Asai¹, yuji KATO¹, Maki Tsujimura² (1.Geo Science Laboratory, 2.University of Tsukuba)

*Masaya Yasuhara¹, Akihiko Inamura², Noritoshi Morikawa², Hiroshi Takahashi², Masaaki Takahashi², Michiko Ohwada², Kohei Kazahaya², Stephen Gingerich⁴, Yoichi Oyama³ (1.Rissho Univ., 2.Geological Survey of Japan, AIST, 3.Kushiro Board of Education, 4.USGS)

*Yusuke Sakamoto¹, Harue Masuda¹, Akinori Takeuchi², Tsuyoshi Shintani¹ (1.Department of Geosciences, Faculty of Science, Osaka City University, 2.National Institute for Environmental studies)

*Qing CHANG¹, Hitomi Nakamura^1,2, Kotona Chiba¹, Hikaru Iwamori^1,2 (1.Japan Agency for Marine-Earth Science and Technology, 2.Tokyo Institute of Technology)

*Jun SUGIMOTO¹, Hidekazu Suzuki², Yuji Miyashita³ (1.Graduate Division of Arts and Sciences, Komazawa Univ., 2.Dep. of Geography, Komazawa Univ., 3.HSRI, Kanagawa Pref.)