*Seigo Fujiwara¹, Yuichi Onda², Yoshifumi Wakiyama³, Toshiaki Anzai⁴, Hiroaki Kato² (1.Master Program in Geosciences, Degree Programs in Life and Earth Sciences, University of Tsukuba, 2.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 3.Institute of Environmental Radioactivity, Fukushima University, 4.School of Life and Environmental Sciences, University of Tsukuba)

*Arihito Kondo¹, Yuki Matsushi², Yoshinori OTSUKI¹ (1.Institute of Geography, Graduate School of Science, Tohoku University, 2.Disaster Prevention Research Institute, Kyoto University)

*Ryoga Ohta^1,2, Yuki Matsushi³, Hiroyuki Matsuzaki⁴ (1.Graduate School of Science, Kyoto university, 2.JSPS Research Fellow DC, 3.Disaster Prevention Research Institute, Kyoto University, 4.Micro Analysis Laboratory, Tandem Accelerator, The University of Tokyo)

*Wataru Koga¹, Tsuyoshi Hattanji², Takahisa Furuichi³, Shoji Doshida⁴, Yasushi Tanaka⁵ (1.University of Tsukuba graduate school of Life and Environmental Science, 2.University of Tsukuba department of Life and Environmental Science, 3.Forestry and Forest Products Research Institute, 4.National Research Institute of Fire and Disaster, 5.Komazawa University Faculty of Letters)

*Yuma Shibuya¹ (1.KANAZAWA UNIVERSITY)

*Hayate Kimura¹, Toshihiko Ichihara², Hironobu Kan¹ (1.Graduate School of Integrated Sciences for Global Society, Kyushu University, 2.Sedimentary Environments Research)