*Yu Takagi¹, Takuro Ogura², Yasuhiko TAMURA³, Chiaki T. Oguchi⁴, Yuichi S. Hayakawa⁵, Masato Sato⁶, Tsuyoshi Hattanji⁷ (1.Graduate School of Science and Technology, Degree Programs in Life and Earth Sciences, University of Tsukuba, 2.Graduate School of Education, Hyogo University of Teacher Education, 3.The Executive Committee for the Preservation of TAYA CAVERN, 4.Graduate School of Science and Engineering, Saitama University, 5.Faculty of Environmental Earth Science, Hokkaido University, 6.National Research Institute for Earth Science and Disaster Resilience, 7.Faculty of Life and Environmental Sciences, University of Tsukuba)

*Kenta Saito¹, Tsuyoshi Hattanji², Takuro Ogura³, Takahisa Furuichi⁴, Yasushi Tanaka⁵, Shoji Doshida⁶ (1.Graduate School of Science and Technology, University of Tsukuba, 2.Faculty of Life and Environmental Sciences, University of Tsukuba, 3.Graduate School of Education, Hyogo University of Teacher Education, 4.Forestry and Forest Products Research Institute, 5.Faculty of Letters, Komazawa University, 6.National Research Institute of Fire and Disaster)

*Shiori Matsumoto¹, Tsuyoshi Hattanji², Takuro Ogura³, Takahisa Furuichi⁴, Shoji Doshida⁵, Tanaka Yasushi⁶ (1.Graduate School of Science and Technology, University of Tsukuba, 2.Faculty of Life and Environment Sciences, University of Tsukuba, 3.Graduate School of Education, Hyogo University of Teacher Education, 4.Forestry and Forest Products Research Institute, 5.National Research Institute of Fire and Disaster, 6.Faculty of Letters, Komazawa University)

*Taiyo Kajita¹, Tsuyoshi Hattanji², Takuro Ogura³, Doshida Syoji⁴, Takahisa Furuichi⁵, Tanaka Yasushi⁶ (1.Graduate School of Science and Technology, University of Tsukuba, 2.Faculty of Life and Environmental Sciences, University of Tsukuba, 3.Graduate School of Education, Hyogo University of Teacher Education, 4.National Research Institute of Fire and Disaster, 5.Forestry and Forest Products Research Institute, 6.Faculty of Letters, Komazawa University)

Kanami Suzuki¹, *Tsuyoshi Hattanji², Takuro Ogura³, Takahisa Furuichi⁴, Tanaka Yasushi⁵, Shoji Doshida⁶ (1.Graduate School of Science and Technology, University of Tsukuba, 2.Faculty of Life and Environmental Sciences, University of Tsukuba, 3.Graduate School of Education, Hyogo University of Teacher Education, 4.Forestry and Forest Products Research Institute, 5.Faculty of Letters, Komazawa University, 6.National Research Institute of Fire and Disaster)