Central Japan - Boso Triple Junction
Collaboration with Univ. Tokyo - ERI

Long-term (tectonic) deformation associated with subduction.
Pacific-Philippine Sea plates slab-slab collision beneath Kanto.
Short-term (postseismic) affects of Tohoku M9 earthquake on Kanto region

NSF Geophysics: Reorganization of stresses beneath greater Tokyo
after the 2011 Tohoku-Oki M9 earthquake. (USC-Purdue-ERI)

  • Freed, A., A. Hashima, T. Becker, D. Okaya, H. Sato, and T. Nishimura, submitted, Resolving layered subduction zone rheology and afterslip from postseismic displacements following the 2011 Tohoku, Japan Earthquake, Earth Planet Sci Letts.
  • Hashima, A., Becker, T. W., Freed, A. M., Sato, H., and Okaya, D. A., 2016, Coseismic deformation due to the 2011 Tohoku-oki earthquake: influence of 3-D elastic structure around Japan. Earth, Planet., Space, 68, 159, doi:10.1186/s40623-016-0535-9.


  • Pacific - Philippine Sea plate slab-slab interaction within Kanto - Boso triple junction region.

  • Wu, F., Okaya, D., Sato, H., and Hirata, N., 2007, Interaction between two subducting plates under Tokyo and its possible effects on seismic hazards, GRL, 34, L18301, doi:10.1029/2007GL30763.
    -- Auxiliary Material: explanation of movie (.PDF).
    -- Auxiliary Material: movie file (.AVI)

  • Sato, H., Hirata, N., Koketsu, K., Okaya, D., Abe, S., et al., 2005, Earthquake source fault beneath Tokyo, SCIENCE, 309, 15 July 2005, 462-464.


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