*Yasuo Yabe^1,6, Kanematsu Makoto², Ryogo Tadokoro², Shunsuke YOSHIDA², Kosuke Sugimura², Hiroshi Ogasawara^2,6, Takatoshi Ito^3,6, Akio Funato⁴, Martin Ziegler⁵, Bennie Liebenberg⁶, Bryan Watson⁷, Siyanda Mngadi⁸, Musa Manzi⁸, Raymond Durrheim^8,6 (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Faculty of Science and Engineering, Ritsumeikan University, 3.nstitute of Fulid Science, Tohoku University, 4.Fukada Geological Institute, 5.ETH Zurich, 6.ICDP-DSeis, 7.School of Mining Engineering, University of the Witwatersrand, 8.School of Geoscience, University of the Witwatersrand)