*Manami Suzuki ¹, Akiko Hasemi², Tomomi Okada¹, Toru Matsuzawa¹, Norihito Umino¹, Noriko Tsumura³, Tadashi Yamashina⁴, Group for the aftershock observations of the 2011 off the Pacific of Tohoku Earthquake (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Yamagata University, 3.Chiba University, 4.Kochi University)

*Masyitha Retno Budiati¹, Genti Toyokuni¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

*Manami Suzuki ¹, Akiko Hasemi², Tomomi Okada¹, Toru Matsuzawa¹, Norihito Umino¹, Noriko Tsumura³, Tadashi Yamashina⁴, Group for the aftershock observations of the 2011 off the Pacific of Tohoku Earthquake (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Yamagata University, 3.Chiba University, 4.Kochi University)

*Masyitha Retno Budiati¹, Genti Toyokuni¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

*Kazuya Tateiwa¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

*Kazuya Tateiwa¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

*Naoki Uchida¹, Goshi Sato², Satoshi Hirahara¹, Katsuhiro Temma², Toshio Kono¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions Graduate School of Science, Tohoku University, 2.Resilient ICT Research Center, National Institute of Information and Communications Technology)

*Naoki Uchida¹, Goshi Sato², Satoshi Hirahara¹, Katsuhiro Temma², Toshio Kono¹, Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions Graduate School of Science, Tohoku University, 2.Resilient ICT Research Center, National Institute of Information and Communications Technology)

*Sumire Maeda¹, Toru Matsuzawa¹, Keisuke Yoshida¹, Tomomi Okada¹, Takeyoshi Yoshida¹ (1.Graduate School of Science,Tohoku University)

Tadashi Sato¹, *Tomomi Okada¹, Yoshihisa Iio², Satoshi Matsumoto³, Stephen Bannister⁴, John Ristau⁴, Shiro Ohmi², Tsutomu Miura², Jarg Pettinga⁵, Francesca Ghisetti⁶, Richard H. Sibson⁷ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Disaster Prevention Research Institute, Kyoto University, 3.Faculty of Science, Kyushu University, 4.GNS Science, New Zealand, 5.University of Canterbury, New Zealand, 6.Terra Geologica, New Zealand, 7.University of Otago, New Zealand)

*Sumire Maeda¹, Toru Matsuzawa¹, Keisuke Yoshida¹, Tomomi Okada¹, Takeyoshi Yoshida¹ (1.Graduate School of Science,Tohoku University)

Tadashi Sato¹, *Tomomi Okada¹, Yoshihisa Iio², Satoshi Matsumoto³, Stephen Bannister⁴, John Ristau⁴, Shiro Ohmi², Tsutomu Miura², Jarg Pettinga⁵, Francesca Ghisetti⁶, Richard H. Sibson⁷ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Disaster Prevention Research Institute, Kyoto University, 3.Faculty of Science, Kyushu University, 4.GNS Science, New Zealand, 5.University of Canterbury, New Zealand, 6.Terra Geologica, New Zealand, 7.University of Otago, New Zealand)