*Hironobu KAN¹, Masayuki NAGAO², Ken TOGUCHI³, Nobuyuki HORI⁴, Kensaku URATA⁵, Kazuhiko FUJITA³, Yusuke YOKOYAMA⁶, Yosuke NAKASHIMA⁷, Hitoshi HASEGAWA⁸, Tatsuro NAKAI⁸, Kazuhisa GOTO⁹, Chiaki KATAGIRI¹⁰, Rintaro ONO¹¹, Frederic Sinniger¹², Rian Prasetia³, Saki HARII³, Akira IGUCHI¹³, Atsushi SUZUKI² (1.Graduate School of Integrated Sciences for Global Society, Kyushu University, 2.Institute of Geology and Geoinformation, AIST, 3.University of the Ryukyus, 4.Nara University, 5.Osaka University of Economics and Law, 6.AORI, University of Tokyo, 7.Ariake National College of Technology, 8.Kokushikan University, 9.IRIDeS, Tohoku University, 10.Okinawa Prefectural Museum and Art Museum, 11.Tokai University, 12.JAMSTEC, 13.Okinawa National College of Technology)