Kisara Shimizu¹, *Chiaki T. Oguchi¹, Yasuhiko TAMURA², Yuichi S. Hayakawa³, Takuro Ogura⁴, OGATA KEISUKE⁵ (1.Institute for Environmental Science and Technology, Graduate School of Science and Engineering, Saitama University, 2.The Exective Committee for the Preservation of Taya Cavern, 3.Faculty of Environmental Earth Science, Hokkaido University, 4.Graduate School of Frontier Sciences, The University of Tokyo, 5.Tsurumi University)

*Yuichi S. Hayakawa^1,2, Takuro Ogura^4,5, Yasuhiko Tamura², Chiaki T. Oguchi³, Kisara Shimizu³ (1.Faculty of Environmental Earth Science, Hokkaido University, 2.Center for Spatial Information Science, The University of Tokyo, 3.Saitama University, 4.Graduate School of Frontier Science, The University of Tokyo, 5.Graduate School of Environmental Science, Hokkaido University)

*Wonsuh Song¹, Tadateru Nishiura², Chiaki T. Oguchi³ (1.Waseda University, 2.Kokushika Univeristy, 3.Saitama University)

*Wataru Tanikawa¹, Go-Ichiro Uramoto², Masafumi MURAYAMA², Yohei Hamada¹, Yuhji Yamamoto², Osamu Tadai³ (1.Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research, 2.Kochi University, Center for Advanced Marine Core Research, 3.Marine Works Japan LTD.)

*Ryo Anma¹, Ki-Cheol Shin², Chikako Watanabe³, Akihiro Tuji⁴ (1.Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2.Research Institute for Humanity and Nature, 3.Faculty of International Studies, Osaka Gakuin University, 4.National Museum of Nature and Science)

*Chiaki T. Oguchi¹ (1.Institute for Environmental Science and Technology, Graduate School of Science and Engineering, Saitama University)