*Jessica Biddle¹, Yusuke Yokoyama^1,2, Takashi Ishizawa³, Ren Tsuneoka², Yosuke Miyairi², David Heslop¹ (1.Australian National University, 2.University of Tokyo, 3.Tohoku University)

*Ken Ikehara¹, Takashi Ishizawa², Toshiya Kanamatsu³ (1.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology, 2.Tohoku University, 3.Japan Agency for Marine-Earth Science and Technology)

*Hiroko Kaida¹, Kazuhisa Goto¹, Takashi Ishizawa², Kaoru Hayashi³ (1.The University of Tokyo, 2.Tohoku University, 3.Hachijo Town Board of Education)

*Yuichi Nishimura¹, Yasuhiro Takashimizu², Takashi Ishizawa³, Daisuke Sugawara³ (1.Graduate School of Science, Hokkaido University, 2.Faculty of Education, Niigata University, 3.International Research Institute of Disaster Science, Tohoku University)

*Takashi Ishizawa¹, Yuichi Nishimura², Yasuhiro Takashimizu³, Daisuke Sugawara¹, Yosuke Miyairi⁴, Yusuke Yokoyama⁴ (1.International Research Institute of Disaster Science, Tohoku University, 2.Institute of Seismology and Volcanology, Hokkaido University, 3.Niigata University, 4.Atomosphere and Ocean Research Institute, the Univeristy of Tokyo)

*Sakurako Ouchi¹, Daisuke Sugawara², Takashi Ishizawa², Yasuhiro Takashimizu³, Atsushi Urabe⁴ (1.Tohoku University, 2.International Research Institute of Disaster Science, Tohoku University, 3.Mathematical and Natural Sciences, Institute of Humanities, Social Science and Education, Niigata University, 4.Research Institute for Natural Hazards and Disaster Recovery, Niigata University)

*Yuito Sato¹, Daisuke Sugawara², Takashi Ishizawa², Atsushi Urabe³, Yasuhiro Takashimizu⁴, Manabu Kato⁵, Tsuyoshi Kawata⁶ (1.TOHOKU UNIVERSITY, 2.International Research Institute of Disaster Science, Tohoku University, 3.Research Institute for Natural Hazards and Disaster Recovery, Niigata University, 4.Mathematical and Natural Sciences, Institute of Humanities, Social Sciences and Education, Niigata University, 5.Niigata Prefecture Archaeological Research Corporation, 6.Minamisoma City Board of Education)

*Kanano Yoshiike¹, Daisuke Sugawara², Takashi Ishizawa², Hidetoshi Masuda¹, Kenta Minamidate¹, Erick Velasco R.¹ (1.Department of Earth Science, Graduate School of Science, Tohoku University, 2.International Research Institute of Disaster Science, Tohoku University)

*Kazuhisa Goto¹, James Goff², Joji S. Malodali³, Nilesh Kumar⁴, Takashi Ishizawa⁵, Katsumi Kasai¹, Koki Nakata¹ (1.Department of Earth and Planetary Science, The University of Tokyo, 2.University of New South Wales, 3.Mineral Resource Department, 4.University of the South Pacific, 5.Tohoku University)

*Kenta Minamidate¹, Kazuhisa Goto², Haruki Imura², Katsumi Kasai², Dai Takahashi², Takashi Ishizawa³ (1.Graduate School of Science, Tohoku University, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.International Research Institute of Disaster Science, Tohoku University)

*Takashi Ishizawa¹, Kazuhisa Goto², Koki Nakata², Savelinga Faoliu³, Penikolo Vailea³, Katsumi Kasai², James Goff^4,5 (1.Tohoku University, 2.The University of Tokyo, 3.Tonga Geological Services, 4.University of New South Wales, 5.University of Southampton)

*Koki Nakata¹, Takashi Ishizawa², James Goff³, Savelinga Faoliu⁴, Penikolo Vailea⁴, Katsumi Kasai¹, Yusuke Yokoyama¹, Yosuke Miyairi¹, Kazuhisa Goto¹ (1.The University of Tokyo, 2.Tohoku University, 3.University of New South Wales, 4.Tonga Geological Services)