*Satoshi Matsumoto¹, Ayaho Mitsuoka², Takumi Motokoshi², Takeshi Matsushima¹, Hiroshi Shimizu¹, Kazunari Uchida¹, Azusa Mori¹, Satoru ANIYA², Takuji Watanabe², Yota Suzuki², Ryunosuke Takayama², Shungo Tasa², Shinichi Sakai³ (1.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 2.Graduate School of Science, Kyushu University., 3.The University of Tokyo III/GSII)

*Kosuke Morikawa¹, Hiromichi Nagao^2,3, Shin-ichi Ito^2,3, Shinichi Sakai^2,5, Naoshi Hirata^2,4 (1.Osaka University, 2.Earthquake Research Institute, The University of Tokyo,, 3.Graduate School of Information Science and Technology, 4.NIED, 5.Interfaculty Initiative in Information Studies, The University of Tokyo)

Tatsuya Mizuta¹, *Tomomi Okada¹, Martha Savage², Ryota Takagi¹, Keisuke Yoshida¹, Shinichi Sakai³, Kei Katsumata⁴, Mako Ohzono^4,3, Masahiro Kosuga⁵, Takuto Maeda⁵, Yoshiko Yamanaka⁶, Hiroshi Katao⁷, Takeshi Matsushima⁸, Hiroshi Yakiwara⁹, Takashi NAKAYAMA¹, Satoshi Hirahara¹, Toshio Kono¹, Toru Matsuzawa¹, Group for the aftershock observations of the 2011 off the Pacific coast of Tohoku Earthquake (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Victoria University of Wellington, 3.ERI, University of Tokyo, 4.Hokkaido University, 5.Hirosaki University , 6.Nagoya University, 7.DPRI, Kyoto University, 8.Kyushu University, 9.Kagoshima University)

*Takumi Motokoshi¹, Satoshi Matsumoto², Yoshihisa Iio³, Shinichi Sakai⁴, Aitaro Kato⁴ (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.Earthquake Research Institute, University of Tokyo)

*Ryunosuke Takayama¹, Takumi Motokoshi¹, Satoshi Matsumoto², Yoshihisa Iio³, Shinichi Sakai⁴, Aitaro Kato⁴ (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.Earthquake Research Institute, the University of Tokyo)