Director [Principal Researcher]	Takane Hori	Res DB
[Principal Researcher]	Ryoichi Iwase	Res DB
[Principal Researcher]	Narumi Takahashi	Res DB
[Principal Researcher]	Katsuyoshi Kawaguchi
[Senior Engineer]	Kentaro Sueki
[Senior Administrator]	Masahisa Oyaizu		*
[Senior staff]	Kyohiko Mitsuzawa

Research and Development Group for Seafloor Observatory

Group Leader [Principal Researcher]	Eiichiro Araki	Res DB
Deputy Group Leader [Senior Engineer]	Takashi Yokobiki
[Senior Researcher]	Hiroyuki Matsumoto	Res DB
[Researcher]	Shuhei Nishida	Res DB
[Researcher]	Yuya Machida	Res DB
[Researcher]	Shuhei Tsuji
[Project Researcher]	Akiko Toh
[Senior Engineer]	Takeshi Katayama
[Senior Engineer]	Masayuki Suzuki
[Postdoctoral Researcher]	Satoru Baba

Earthquake and Tsunami Monitoring Group

Group Leader [Senior Researcher]	Keisuke Ariyoshi	Res DB
Deputy Group Leader [Senior Researcher]	Kentaro Imai	Res DB
[Senior Researcher]	Yojiro Yamamoto	Res DB
[Senior Engineer]	Hiroki Horikawa
[Young Research Fellow]	Yuchen Wang
[Postdoctoral Researcher]	Satoshi Kusumoto	Res DB
[Technical Support Staff]	Ryoko Obayashi
[Technical Support Staff]	Shuichiro Yada
[Research Assistant]	Tatsuhiko Tokuta
[Research Assistant]	Tomoya Kurihara
[Research Assistant]	Yuko Yui
[Guest Researcher]	Kazuyoshi Nanjo

Earthquake Forecasting Research Group

Group Leader [Senior Researcher]	Takeshi Iinuma	Res DB
[Researcher]	Daisuke Sato
[Research Assistant]	Yoshihisa Hiyoshi
[Visiting Researcher]	Akinori Hashima
[Visiting Researcher]	Masayuki Kano
[Visiting Researcher]	Ryoko Nakata
[Guest Researcher]	Motoyuki Kido