*Kei Katsumata¹, Mako Ohzono¹, Hiroshi Aoyama¹, Ryo Tanaka¹, Masamitsu Takada¹, Masayoshi Ichiyanagi¹, Teruhiro Yamaguchi¹, Kazumi Okada¹, Hiroaki Takahashi¹, Shin'ichi Sakai², Satoshi Matsumoto³, Tomomi Okada⁴, Toru Matsuzawa⁴, Shuichiro Hirano⁵, Toshiko Terakawa⁶, Shinichiro 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, 2.Earthquake Research Institute, University of Tokyo, 3.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 4.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 5.Nansei-Toko Observatory for Earthquakes and Volcanoes, Graduate School of Science and Engineering, Kagoshima University, 6.Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, 7.Graduate School of Science and Technology, Hirosaki University, 8.Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University, 9.Graduate School of Science, Chiba University, 10.National Research Institute for Earth Science and Disaster Prevention)

*Aitaro Kato¹, Shin'ichi Sakai¹, Satoshi Matsumoto², Yoshihisa Iio³ (1.Earthquake Research Institute, the University of Tokyo, 2.Kyushu University, 3.Kyoto University)

*Ayaho Mitsuoka¹, Satoshi Matsumoto², Azusa Shito², Hiroshi Shimizu², 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)

*Ayaho Mitsuoka¹, Satoshi Matsumoto², Azusa Shito², Hiroshi Shimizu², 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)

*Koki Aizawa¹, Hisashi Asaue², Katsuaki Koike³, Shinichi Takakura⁴, Toru Yoshinaga¹⁰, Makoto Uyeshima⁵, Takao Koyama⁵, Ryokei Yoshimura⁷, Ken'ichi Yamazaki⁷, Shintaro Komatsu⁷, Yusuke Yamashita⁷, Hiroshi Ichihara⁹, Mitsuru Utsugi⁸, Kaori Tsukamoto¹², Dan Muramatsu¹², Yoshiko Teguri^1,11, Kazunari Uchida¹, Hideaki Hase⁶, Azusa Shito¹, Satoshi Matsumoto¹, Takeshi Matsushima¹, Hiroshi Shimizu¹ (1.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 2.Laboratory on Innovative Techniques for Infrastructures, Kyoto University, 3.Environmental Geosphere Engineering, Department of Urban Management, Graduate School of Engineering, Kyoto University, 4.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 5.Earthquake Research Institute, University of Tokyo, 6.GERD, 7.Disaster Prevention Research Institute, Kyoto University, 8.Aso Volcanological Laboratory, Institute for Geothermal Sciences, Graduate School of Science, Kyoto University, 9.Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, 10.Kumamoto University, 11.Japan Meteorological Agency, 12.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University)

*Hashimoto Tasuku¹, Koki Aizawa², Takeshi Matsushima², Hiroshi Shimizu², Yuto Hayashida¹, Yuhei Yuasa¹, Kaori Tsukamoto¹, Yuto Yamamoto³, Kanta Miyano³, Megumi Kamizono¹, Satoshi Matsumoto² (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 Planetary Sciences, School of Science, Kyushu University)

*Kanta Miyano¹, Hiroshi Shimizu², Takeshi Matsushima², Satoshi Matsumoto², Koki Aizawa², Hashimoto Tasuku³, Yuto Hayashida³, Yuhei Yuasa³ (1.Department of Earth and Planetary Sciences, School of Science, Kyushu University, 2.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University)

*Hashimoto Tasuku¹, Koki Aizawa², Takeshi Matsushima², Hiroshi Shimizu², Yuto Hayashida¹, Yuhei Yuasa¹, Kaori Tsukamoto¹, Yuto Yamamoto³, Kanta Miyano³, Megumi Kamizono¹, Satoshi Matsumoto² (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 Planetary Sciences, School of Science, Kyushu University)

*Kanta Miyano¹, Hiroshi Shimizu², Takeshi Matsushima², Satoshi Matsumoto², Koki Aizawa², Hashimoto Tasuku³, Yuto Hayashida³, Yuhei Yuasa³ (1.Department of Earth and Planetary Sciences, School of Science, Kyushu University, 2.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University)

*Aitaro Kato¹, Shin'ichi Sakai¹, Satoshi Matsumoto², Yoshihisa Iio³ (1.Earthquake Research Institute, the University of Tokyo, 2.Kyushu University, 3.Kyoto University)

*Satoshi Matsumoto¹, Yoshihisa Iio², Shin'ichi Sakai³, Aitaro Kato³, Takuo Shibutani², Yuto Hayashida⁴, Group for 0.1 manten Hyper dense seismic observation (1.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 2.Disaster Prevention Reasearch Institute, Kyoto University, 3.Earthquake Research Institute, University of Tokyo, 4.Graduate School of Science, Kyushu University)

*Yuto Hayashida¹, Satoshi Matsumoto², Yoshihisa Iio³, Shin'ichi Sakai⁴, Aitaro Kato⁴, Group for "0.1 Manten" hyper dense seismic observation Group registration (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)

*Ayaho Mitsuoka¹, Satoshi Matsumoto², Azusa Shito², Yusuke Yamashita³, Manami Nakamoto⁴, Masahiro Miyazaki³, Shin'ichi Sakai⁵, Yoshihisa Iio³, 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, 3.Disaster Prevention Research Institute, Kyoto University, 4.Association for the Development of Earthquake Prediction, 5.Earthquake Research Institute, The University of Tokyo)

*Tomomi Okada¹, Satoshi Matsumoto², Yoshihisa Iio³, Federica Lanza⁴, Clifford H Thurber⁴, Miu Matsuno¹, Yuta Kawamura², Tadashi Sato¹, Stephen C Bannister⁵, John Ristau⁵, Martha K Savage⁶, John Townend⁶, Jarg Petttinga⁷, Francesca Ghisetti⁸, Richard H Sibson⁹ (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. Disater Prevention Research Institute, Kyoto University, 4.University of Wisconsin-Madison, U.S.A., 5.GNS Science, New Zealand, 6.Victoria University of Wellington, New Zealand, 7.University of Canterbury, New Zealand, 8.TerraGeoLogica, New Zealand, 9.University of Otago, New Zealand)

*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 Sciences, 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)

*Miu Matsuno¹, Tomomi Okada¹, Satoshi Matsumoto², Yuta Kawamura², Yoshihisa Iio³, Tadashi Sato¹, Stephen C Bannister⁴, John Ristau⁴, Martha K Savage⁵, John Townend⁵, Jarg Pettinga⁶, Francesca Ghisetti⁷, Richard H Sibson⁸ (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.Disater 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.TerraGeologica, Ruby Bay, New Zealand, 8.University of Otago, Dunedin, New Zealand)

*Yuta Kawamura¹, Satoshi Matsumoto¹, Tomomi Okada², Miu Matsuno², Yoshihisa Iio³, Tadashi Sato², Stephen C Bannister⁴, John Ristau⁴, Martha K Savage⁵, John Twonend⁵, Jarg Pettinga⁶, Francesca Ghisetti⁷, Richard H Sibson⁸ (1.Kyushu University, Shimabara, Japan, 2.Tohoku University, Sendai, Japan, 3.Kyoto University, Uji, Japan, 4.GNS Science, Lower Hutt, New Zealand, 5.Victoria University of Wellington, Wellington, New Zealand, 6.University of Canterbury, Christchurch, New Zealand, 7.TerraGeologica, Ruby Bay, New Zealand, 8.University of Otago, Dunedin, New Zealand)

*Miu Matsuno¹, Tomomi Okada¹, Satoshi Matsumoto², Yuta Kawamura², Yoshihisa Iio³, Tadashi Sato¹, Stephen C Bannister⁴, John Ristau⁴, Martha K Savage⁵, John Townend⁵, Jarg Pettinga⁶, Francesca Ghisetti⁷, Richard H Sibson⁸ (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.Disater 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.TerraGeologica, Ruby Bay, New Zealand, 8.University of Otago, Dunedin, New Zealand)

*Yuta Kawamura¹, Satoshi Matsumoto¹, Tomomi Okada², Miu Matsuno², Yoshihisa Iio³, Tadashi Sato², Stephen C Bannister⁴, John Ristau⁴, Martha K Savage⁵, John Twonend⁵, Jarg Pettinga⁶, Francesca Ghisetti⁷, Richard H Sibson⁸ (1.Kyushu University, Shimabara, Japan, 2.Tohoku University, Sendai, Japan, 3.Kyoto University, Uji, Japan, 4.GNS Science, Lower Hutt, New Zealand, 5.Victoria University of Wellington, Wellington, New Zealand, 6.University of Canterbury, Christchurch, New Zealand, 7.TerraGeologica, Ruby Bay, New Zealand, 8.University of Otago, Dunedin, New Zealand)

*Shin'ichi Sakai¹, Satoshi Matsumoto², Yoshihisa Iio³, Aitaro Kato¹ (1.Earthquake Research Institute, University of Tokyo, 2.Institute of Seismology and Volcanology, Faculty of Seiences, Kyushu University, 3.Disaster Prevention Research Institute, Kyoto University)

*Shin'ichi Sakai¹, Satoshi Matsumoto², Yoshihisa Iio³, Aitaro Kato¹ (1.Earthquake Research Institute, University of Tokyo, 2.Institute of Seismology and Volcanology, Faculty of Seiences, Kyushu University, 3.Disaster Prevention Research Institute, Kyoto University)