*Kaoru SAWAZAKI¹ (1. National Research institute for Earth Science and Disaster Resilience )

*Yuki Susukida¹, Kei Katsumata¹, Masayoshi Ichiyanagi¹, Mako Ohzono¹, Hiroshi Aoyama¹, Ryo Tanaka¹, Masamitsu Takada¹, Teruhiro Yamaguchi¹, Kazumi Okada¹, Hiroaki Takahashi¹, Shin'ichi Sakai², Satoshi Matsumoto³, Tomomi Okada⁴, Toru Matsuzawa⁴, Shuichiro Hirano⁵, Toshiko Terakawa⁶, Shin'ichiro Horikawa⁶, Masahiro Kosuga⁷, Hiroshi Katao⁸, Yoshihisa Iio⁸, Airi Nagaoka⁸, Noriko Tsumura⁹, Tomotake Ueno¹⁰, the Group for the Aftershock Observations of the 2018 Hokkaido Eastern Iburi Earthquake (1. Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University, Sapporo, Japan, 2. Earthquake Research Institute, University of Tokyo, Tokyo, Japan, 3. Institute of Seismology and Volcanology, Kyushu University, Fukuoka, Japan, 4. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Tohoku University, Sendai, Japan, 5. Nansei-Toko Observatory for Earthquakes and Volcanoes, Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Japan, 6. Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan, 7. Earthquake and Volcano Observatory, Hirosaki University, Hirosaki, Japan, 8. Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, 9. Department of Earth Science, Faculty of Science, Chiba University, Chiba, Japan, 10. National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan)

*Koichiro Obana¹, Tsutomu Takahashi¹, Yojiro Yamamoto¹, Gou Fujie¹, Yasuyuki Nakamura¹, Seiichi Miura¹, Shuichi Kodaira¹ (1. JAMSTEC)

*Nobuyuki Morikawa¹, Jun'ichi Miyakoshi², Hiroyuki Fujiwara¹ (1. NIED, 2. Ohsaki Research Institute, Inc.)

*Kazuyoshi Z. Nanjo¹ (1. University of Shizuoka)

*Tetsuo Hahsimoto¹, Takashi Yokota² (1. Meteorological Research Institute, 2. Aichi Institue of Technology)

*Ryohei Sasajima¹, Takeo Ito² (1. Research Center For Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University, 2. Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University)

*Kohei NAGATA¹ (1. Meteorological Research Institute)

*Kentaro Hattori, Ichiro Nakanishi¹ (1. Kyoto Univ.)

*Makoto Matsubara¹, Hiroshi Sato² (1. National Research Institute for Earth Science and Disaster Resilience, 2. Earthquake Research Institute, the University of Tokyo)

*Ryo Kurihara¹, Kazushige Obara¹, Akiko Takeo¹, Yusaku Tanaka¹ (1. Earthquake Research Institute, The University of Tokyo)

*Masahiro Kosuga¹ (1. Graduate School of Science and Technology, Hirosaki University)

*Kyosuke Okamoto¹, Li Yi², Hiroshi Asanuma¹, Takashi Okabe³, Yasuyuki Abe⁴, Masatoshi Tsuzuki⁵ (1. AIST, 2. Osaka University, 3. GERD, 4. OAG, 5. JOGMEC)

*Takane Hori¹ (1. JAMSTEC)

*Keita Nakamoto¹, Yoshihiro Hiramatsu¹, Takahiko Uchide², Kazutoshi Imanishi² (1. Univ. of Kanazawa, 2. AIST)

*Kazushige Obara¹ (1. Earthquake Research Institute, the University of Tokyo)

*Hisahiko Kubo¹, Tomoaki Nishikawa² (1. National Research Institute for Earth Science and Disaster Resilience, 2. Disaster Prevention Research Institute, Kyoto University)

*Keita Chiba¹ (1. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University )

*Shunsuke Takemura¹, Youichi Asano², Takanori Matsuzawa², Akemi Noda², Tatsuya Kubota², Katsuhiko Shiomi² (1. Earthquake Research Institute, the University of Tokyo, 2. National Research Institute for Earth Science and Disaster Resilience)

*Satoru Baba¹, Shunsuke Takemura¹, Kazushige Obara¹ (1. Earthquake Research Institute, the University of Tokyo)

*Takahito Nishimiya¹, Akio Kobayashi¹, Koji Tamaribuchi¹, Hisatoshi Baba² (1. Meteorological Research Institute, 2. Tokai University)

*Akiko Toh¹, Wan-Jou Chen², Wu-Cheng Chi², Doug Dreger³, Satoshi Ide¹ (1. Univ. of Tokyo, 2. Academia Sinica, 3. UC Berkeley)

*Takanori Matsuzawa¹, Tetsuya Takeda¹ (1. National Research Institute for Earth Science and Disaster Resilience)

*Mamoru Nakamura¹ (1. Faculty of Science, University of the Ryukyus)

*Keita Nakamoto¹, Yoshihiro Hiramatsu¹, Takanori Matsuzawa² (1. Univ. of Kanazawa, 2. NIED)

*Takuma Ikegaya¹, Mare Yamamoto¹ (1. Tohoku University)

*Taichi Haruyama¹, Masahiro Kosuga¹, Takuto Maeda¹ (1. Graduate School of Science and Technology, Hirosaki University)

*Tomoaki Nishikawa¹, Takuya Nishimura¹ (1. Disaster Prevention Research Institute, Kyoto University)

*Toshihiro Igarashi¹ (1. Earthquake Research Institute, The University of Tokyo)

*Yukihiro Nakatani¹, Hiroshi Yakiwara¹, Shuichiro Hirano¹, Reiji Kobayashi¹, Hiroki Miyamachi¹, Shigeru Nakao¹, Kazunari Uchida², Takeshi Matsushima², Hiroshi Shimizu², Yusuke Yamashita³, Kazuo Nakahigashi⁴, Tomoaki Yamada⁵, Hideji Abe⁶, Masanao Shinohara⁶ (1. Kagoshima Univ., 2. Kyushu Univ., 3. DPRI, Kyoto Univ., 4. Tokyo Univ. of Marine Sci. & Tech., 5. ERI, UTokyo (now at JMA), 6. ERI, UTokyo)

*Hiroshi Yakiwara¹, Yukihiro Nakatani¹, Shuichiro Hirano¹, Reiji Kobayashi¹, Hiroki Miyamachi¹, Shigeru Nakao¹, Yusuke Yamashita², Kazunari Uchida⁴, Takeshi Matsushima⁴, Hiroshi Shimizu⁴, Kazuo Nakahigashi⁵, Kodo Umakoshi³, Hideji Abe⁶, Satoshi Ikezawa⁶, Yoshihito Suwa⁷, Tomoaki Yamada⁷, Masanao Shinohara⁶ (1. Kagoshima Univ., 2. DPRI, Kyoto Univ., 3. Nagasaki Univ., 4. Kyushu Univ., 5. Tokyo Univ. of Marine Sci. & Tech., 6. ERI, Univ. of Tokyo, 7. ERI, Univ. of Tokyo (now at JMA))

*Kodai Nakagomi¹, Toshiko Terakawa¹, Satoshi Matsumoto², Takahiro Ohkura³, Kazutoshi Imanishi⁴, Masayuki Yoshimi⁴, Takahiko Uchide⁴, Group for urgent joint seismic observation of the 2016 Kumamoto earthquake⁵ (1. Graduate School of Environmental Studies, Nagoya University, 2. Institute of Seismology and Volcanology, Kyushu University, 3. Aso Volcanological Laboratory, Institute for Geothermal Sciences, Graduate School of Science, Kyoto University, 4. National Institute of Advanced Industrial Science and Technology, 5. Group for urgent joint seismic observation of the 2016 Kumamoto earthquake)

*Ayaho Mitsuoka¹, Satoshi Matsumoto², Azusa Shito², Group for urgent joint seismic observation of the 2016 Kumamoto earthquake (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University)

*Naoto Maesako¹, Satoshi Matsumoto², Ayaho Mitsuoka¹, Group for Urgent Joint Seismic Observation of the 2016 Kumamoto Earthquake (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University)

*Yuhei Yuasa¹, Satoshi Matsumoto², Shigeru Nakao³, Takeshi Matsushima², Takahiro Ohkura⁴ (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University , 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3. Department of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University, 4. Aso Volcanological Laboratory, Institute for Geothermal Sciences, Graduate School of Science, Kyoto University)

*Kei Katsumata¹, Masayoshi Ichiyanagi¹ (1. Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University)

*Koji Tamaribuchi¹, Yuriko Iwasaki², Kazuhiro Iwakiri², Hiroshi Ueno² (1. Meteorological Research Institute, 2. Japan Meteorological Agency)

*Keisuke Yoshida Yoshida¹, Akira Hasegawa¹, Yohei Yukutake², Toru Matsuzawa¹ (1. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Tohoku University, 2. Hot Springs Research Institute of Kanagawa Prefecture)

*Yuta Amezawa¹, Masahiro Kosuga¹, Takuto Maeda¹ (1. Graduate School of Science and Technology, Hirosaki University)

*Takayuki SANO¹, Mamoru TSUKAMOTO¹, Hideki SODA², Takashi MITSUZUKA³, Fumiaki KANTOH³, Hiroshi KATAO⁴ (1. Japan Water Agency, 2. Japan Institute of Country-ology and Engineering, 3. Chishitsu Keisoku Co., Ltd., 4. Disaster Prevention Research Institute, Kyoto University)

*Shin-ichi Ito^1,2, Masayuki Kano³, Hiromichi Nagao^1,2 (1. Earthquake Research Institute, The University of Tokyo, 2. Graduate School of Information Science and Technology, The University of Tokyo, 3. Graduate school of Science, Tohoku University)

*Yuto Hayashida¹, Satoshi Matsumoto², Yoshihisa Iio³, Shin'ichi Sakai⁴, Aitaro Kato⁴, Group for "0.1 Manten" hyper dense seismic observation (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 3. Disater Prevention Research Institute, Kyoto University, 4. Earthquake Research Institute, the University of Tokyo)

*Miu Matsuno¹, Tomomi Okada¹, Satoshi Matsumoto², Yuta Kawamura², Yoshihisa Iio³, Tadashi Sato¹, Stephen C Bannister⁴, John Ristau⁴, Martha K Savage⁵, Jarg Pettinga⁶, Richard H Sibson⁷ (1. Research Center for Prediction of Earthquakes and Volcanic Eruptions Graduate School of Science, Tohoku University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 3. Disaster Prevention Research Institute, Kyoto University, 4. GNS Science, New Zealand, 5. Victoria University of Wellington, Wellington, New Zealand, 6. University of Canterbury, Christchurch, New Zealand, 7. University of Otago, Dunedin, New Zealand)

*MEITONG DUAN¹, Takuji Yamda¹ (1. Ibaraki University)

*Thystere Matondo Bantidi¹, Takeshi Nishimura¹ (1. Tohoku University)

*Tomotake UENO¹, Tatsuhiko SAITO¹, Akemi NODA¹ (1. NIED)

*Sachiko Tanaka¹, Tatsuhiko Saito¹, Akemi Noda¹ (1. National Research Institute for Earth Science and Disaster Resilience)

*Yifeng Liu¹, Yoshihiro Ito², Kazuaki Ohta², Satoshi Katakami¹ (1. Graduate School of Science, Kyoto University, 2. Disaster Prevention Research Institude, Kyoto University)

*Tatsuhiko Saito¹, Akemi Noda¹ (1. National Research Institute for Earth Science and Disaster Resilience)

*Akinori Hashima¹, Hiroshi Sato¹, Toshinori Sato² (1. Earthquake Research Institute, University of Tokyo, 2. Graduate School of Science, Chiba University)