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Shoichi YOSHIOKA

 Professor
 Research Center for Urban Safety and Security &
 Graduate School of Science, Faculty of Science


  • e-mail: yoshioka(at)port.kobe-u.ac.jp
  • Office: The Graduate School of Science and Technology Bldg 3, room 615
  • Mailing address: Department of Planetology, Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan
  • Solid Geophysics Laboratory WEB


Main research themes:

  • Numerical simulations of displacement, strain and stress fields associated with megathrust earthquakes occurring in and around the Japanese islands   
  • Interplate coupling in subduction zones in the circum-Pacific regions (inversion analysis of GPS data, numerical simulations of temperature field)
  • Generation mechanism of deep low-frequency earthquakes and SSEs
  • Numerical simulations of deeper portions of slabs (stress field, temperature field, flow pattern, deformation, seismic wave propagation)
  • Numerical simulations of dynamic fault rupture process
  • Numerical simulations of tsunamis


Recent Publications: 

  • Yingfeng Ji, Shoichi Yoshioka, Vlad Constantin Manea, Marina Manea and Takumi Matsumoto, Three-dimensional numerical modeling of thermal regime and slab dehydration beneath Kanto and Tohoku, Japan. Journal of Geophysical Research, 121 (2016).
  • Nobuaki Suenaga, Shoichi Yoshioka and Takumi Matsumoto, Relationships among temperature, dehydration of the subducting Philippine Sea plate, and the occurrence of a megathrust earthquake,low-frequency earthquakes, and a slow slip event in the Tokai district,central Japan. Physics of the Earth and Planetary Interiors, 260, 44-52 (2016).
  • Yingfeng Ji, Shoichi Yoshioka, and Takumi Matsumoto, Three-dimensional numerical modeling of temperature and mantle flow fields associated with subduction of the Philippine Sea plate, southwest Japan. Journal of Geophysical Research, 121, 458-4482 (2016).
  • Robert W. Porritt and Shoichi Yoshioka, Slab pileup in the mantle transition zone and the 30 May 2015 Chichi-jima earthquake. Geophysical Research Letters, 43, 4905-4912 (2016).
  • Yoshioka, S., Y. Matsuoka and S. Ide, Spatiotemporal slip distributions of three long-term slow slip events beneath the Bungo Channel, southwest Japan, inferred from inversion analyses of GPS data. Geophysical Journal International, 201, 1437-1455 (2015).
  • Yoshioka, S., R. Takagi and T. Matsumoto, Relationship between temperatures and fault slips on the upper surface of the subducting Philippine Sea plate beneath the Kanto district, central Japan. Geophysical Journal International, 201, 878-890 (2015).
  • Yoshioka, A., Y. Torii and M.R. Riedel, Impact of phase change kinetics on the Mariana slab within the framework of 2-D mantle convection. Physics of the Earth and Planetary Interiors, 240, 70-81 (2015).
  • Ji, Y. and S. Yoshioka, Effects of slab geometry and obliquity on the interplate thermal regime associated with the subduction of three-dimensionally curved oceanic plates. Geoscience Frontiers, 6, 61-78 (2015).
  • Yabe, S., S. Ide and S. Yoshioka, Along-strike variations in temperature and tectonic tremor activity along the Hikurangi subduction zone New Zealand. Earth Planets and Space, 66:142 (2014).
  • Kaneshima, S. and S. Yoshioka, Dominant role of temperature on deep earthquake mechanics for the Tonga slab near the bottom of the upper mantle. Earth Planets and Space, 66:138 (2014).
  • Yoshioka, S., Y. Suminokura, T. Matsumoto and J. Nakajima, Two-dimensional thermal modeling of subduction of the Philippine Sea plate beneath southwest Japan. Tectonophysics, 608, 1094-1108 (2013).
  • Nakajima, J., S. Hada, E. Hayami, N. Uchida, A. Hasegawa, S. Yoshioka, T. Mtsuzawa and N. Umino, Seismic attenuation beneath northeastern Japan: Constraints on mantle dynamics and arc magmatism. Journal of Geophysical Research, 118, 1-18 (2013).
  • Yoshioka, S. and Y. Matsuoka, Interplate coupling along the Nankai Trough, southwest Japan, inferred from inversion analyses of GPS data: Effects of subducting plate geometry and spacing of hypothetical ocean-bottom GPS stations. Tectonophysics, 600, 165-174 (2013).
  • Fujita, E., T. Kozono, H. Ueda, Y. Kohno, S. Yoshioka, N. Toda, A. Kikuchi and Y. Ida, Stress field change around the Mount Fuji volcano magma system caused by the Tohoku megathrust earthquake, Japan. Bull Volcanol, 75, 1-14 (2013).


Academic Associations: 



                                           UPDATE: 01/04/2017

     

Department of Planetology, Graduate School of Science, Kobe University

ADDRESS
1-1, Rokkodai-cho, Nada-ku, Kobe, Hyogo, Japan, 657-8501

TEL: (+81)-78-803-6483
FAX :(+81)-78-803-5791