*Tatsuya Mizuta¹, Tomomi Okada¹, Martha K Savage², Ryota Takagi¹, Keisuke Yoshida¹, Hiroshi Yakiwara³, Takeshi Matsushima⁴, Hiroshi Katao⁵, Yoshiko Yamanaka⁶, Masahiro Kosuga⁷, Kei Katsumata⁸, Mako Ohzono⁸, Takashi NAKAYAMA¹, Satoshi Hirahara¹, Toshio Kono¹, Toru Matsuzawa¹, Group for the aftershock observations of the 2011 off the Pacific coast of Tohoku Earthquake (1.Tohoku University , 2.Victoria University of Wellington, 3.Kagoshima University, 4.kyushu University, 5.Kyoto University, 6.Nagoya University, 7.Hirosaki University, 8.Hokkaido University)

*Takao Tabei¹, Mako Ohzono², Bishow R. Silwal³, Rajendra P. Bhandari³, Janak B. Chand³, Soma N. Sapkota³, Hiroe Miyake⁴, Kazuki Koketsu⁴ (1.Department of Global Environment and Disaster Prevention, Faculty of Science and Technology, Kochi University, 2.Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University, 3.Department of Mines and Geology, Nepal, 4.Earthquake Researech Institute, University of Tokyo)

*Ayaka Tagami¹, Tomomi Okada¹, Shin'ichi Sakai², Mako Ohzono³, Kei Katsumata³, Masahiro Kosuga⁴, Yoshiko Yamanaka⁵, Hiroshi Katao⁶, Takeshi Matsushima⁷, Hiroshi Yakiwara⁸, Takashi NAKAYAMA¹, Satoshi Hirahara¹, Toshio Kono¹, Shu'ichiro Hori¹, 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.Earthquake Research Institute, University of Tokyo, 3.Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University, 4.Graduate School of Science and Technology, Hirosaki University, 5.Graduate School of Encironmental Studies, University of NAGOYA, 6.Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University, 7.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 8.Nansei-toko Observatory for Earthquakes and Volcanoes, Kagoshima University)

*Yoshiki Takei¹, Youichiro Takada², James Daniel Paul Moore³, Mako Ohzono⁴ (1.Department of Natural History Sciences, Hokkaido University, 2.Faculty of Science, Hokkaido University, 3.Earth Observatory of Singapore, Nanyang Technological University, 4.Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University)