*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)

*Takashi Iidaka¹, Shin'ichi Sakai¹, Toshihiro Igarashi¹, Kazushige Obara¹, Aitaro Kato¹, Tetsuya Takeda², Shigeki Nakagawa¹ (1.Earthquake Research Institute, University of Tokyo, 2.National Research Institute for Earth Science and Disaster Resilience )

*Motoko Ishise¹, Shin'ichi Sakai¹, Aitaro Kato¹, Shin Aoi², Makoto MATSUBARA² (1.Earthquake Reseach Institute, University of Tokyo, 2.National Research Institute for EarthScience and Disaster Resillience)

*Ryoichi Nakamura¹, Hiroshi Tsuruoka¹, Aitaro Kato¹, Shin'ichi Sakai¹, Naoshi Hirata¹, Takahiro Shiina¹ (1.Earthquake Research Institute, The University of Tokyo)

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

*Kosuke Morikawa¹, Hiromichi Nagao², Shin-ichi Ito², Shin'ichi Sakai², Naoshi Hirata² (1.Osaka University, 2.Earthquake Research Institute, The University of Tokyo)

*Keisuke Yano¹, Takahiro Shiina², Sumito Kurata¹, Aitaro Kato², Fumiyasu Komaki¹, Shin'ichi Sakai², Naoshi Hirata² (1.Graduate School of Information Science and Technology, The University of Tokyo, , 2.Earthquake Research Institute, The University of Tokyo)

*Masayuki Kano¹, Hiromichi Nagao^2,3, Kenji Nagata^4,5, Shin-ichi Ito^2,3, Kei Hasegawa², Shin'ichi Sakai², Shigeki Nakagawa², Muneo Hori², Naoshi Hirata² (1.Graduate school of science, Tohoku University, 2.Earthquake Research Institute, The University of Tokyo, 3.Graduate School of Information Science and Technology, The University of Tokyo, 4.AIST, 5.Japan Science and Technology Agency)

*Masayuki Kano¹, Hiromichi Nagao^2,3, Kenji Nagata^4,5, Shin-ichi Ito^2,3, Kei Hasegawa², Shin'ichi Sakai², Shigeki Nakagawa², Muneo Hori², Naoshi Hirata² (1.Graduate school of science, Tohoku University, 2.Earthquake Research Institute, The University of Tokyo, 3.Graduate School of Information Science and Technology, The University of Tokyo, 4.AIST, 5.Japan Science and Technology Agency)

*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)

*Yuki Kodera¹, Shin'ichi Sakai², Takahito Nishimiya¹ (1.Meteorological Research Institute, Japan Meteorological Agency, 2.Earthquake Research Institute, the University of Tokyo)

*Yuki Kodera¹, Shin'ichi Sakai², Takahito Nishimiya¹ (1.Meteorological Research Institute, Japan Meteorological Agency, 2.Earthquake Research Institute, the University of Tokyo)

*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)