The numerical data on the rupture areas of past large earthquake and related data around Tohoku, Japan.
Please cite the reference papers correctly when you use these data.
-> Repeating earthquakes etc. are here / Plate models etc. are here.

* The distribution of asperities in NE Japan


The slip contour lines of each earthquake aspsave.tar.gz [202 KB]

(There are related data at NGY seismological note


Yamanaka, Y., and Kikuchi, M., Asperity map along the subduction zone in northeastern Japan inferred from regional seismic data, J. Geophys. Res., 109, B07307, doi:10.1029/2003JB002683, 2004.

Murotani,T.,Kikuchi,M.,Yamanaka,Y.,Rupture processesof large Fukushima-oki earthquakesin 1938., Abstract 2003 Japan Geoscience Union Meeting, S052-003, 2003.

Nagai, R., M. Kikuchi, and Y. Yamanaka, Comparative study on the source processes of recurrent large earthquakes in Sanriku-oki Region: The 1968 Tokachi-oki earthquake and the 1994 Sanriku-oki earthquake, Zisin(2), 54, 267-280, 2001.

Yamanaka, Y., Kikuchi, M., Source process of the recurrent Tokachi-oki earthquake on September 26, 2003, inferred from teleseismic body waves. Earth, Planets and Space 55, e21-e24, 2003.

Earthquake Reserch Center, University of Tokyo, Tokachi-oki earthquake (Mj8.0) on September 26, EIC seismological note No.139, 2003.

Earthquake Reserch Center, University of Tokyo, Off-Kushiro earthquake (Ms6.9) on December 6, EIC seismological note No.159, 2004.

Earthquake Reserch Center, University of Tokyo, Miyagi-oki earthquake (Mj7.2) on August 16, EIC seismological note No.168, 2005.

* Aftershock areas of past large earthquakes


Compiled data for interplate earthquakes offshore Tohoku (1926-2008) afs-inter-all.txt [18 KB]

The data for each earthquake (including non-interplate earthquakes) (1926-2008) afs-areas.tar.gz [8 KB]

[1926-1983] Hasegawa, A., Umino, N., Takagi, A., 1985. Seismicity in the Northeastern Japan arc and seismicity pattern before large earthquakes. Earthq. Predict. Res. 3, 607-626.

[1984-2008] Uchida, N., J. Nakajima, A. Hasegawa, and T. Matsuzawa, What controls interplate coupling?: Evidence for abrupt change in coupling across a border between two overlying plates in the NE Japan subduction zone, Earth Planet. Sci. Lett., 283, 111-121, 2009.

* Tunami generation areas in the offshore Tohoku and Hokkaido


The data for each earthquake (1893-2011) 20hatori.tar.gz [120 KB]

Hatori(1970), Hatori(1972), Hatori(1973), Hatori(1974), Hatori(1975a), Hatori(1975b), Hatori(1976), Hatori(1978), Hatori(1989), Hatori(1996), Hatori(2012), Hatori(2014) .


  • Hatori,Tokutaro (1970), An Investigation of the Tsunami generated by the East Hokkaido Earthquake of August, 1969, Bulletin of the Earthquake Research Institute, University of Tokyo, 48(3), 399-412, 1970.
  • Tokutaro Hatori (1972), The Tsunamis generated off Cape Erimo on August 2, 1971 and off Hachijo Island on February 29, 1972: Tsunami Source and Distribution of the Initial Motion of Tsunami,Zisin 2, 25(4), 362-370, doi:10.4294/zisin1948.25.4_362.
  • Tokutaro Hatori (1973),Reexamination of the Wave Source of the 1952 Tokachi-oki Tsunami, Ziein 2, 26(2), 206-208, doi:10.4294/zisin1948.26.2_206.
  • Tokutaro Hatori (1974), Tsunami sources on the Pacific side in northeast Japan, Zisin 2 , 27(4), 321-337, doi:10.4294/zisin1948.27.4_321.
  • Tokutaro Hatori (1975a), Sources of Tsunamis generated off Boso Peninsula, Bulletin of the Earthquake Research Institute, University of Tokyo, 50(1), 83-91.
  • Tokutaro Hatori (1975b), Tsunami Activity in Eastern Hokkaido after the Off Nemuro Peninsula Earthquake in 1973, Zisin 2, 28(4), 461-471, doi:10.4294/zisin1948.28.4_461.
  • Tokutaro Hatori (1976), Source Mechanisms of Tsunamis Associated with the Fukushima-oki Earthquake Swarm in 1938, Zisin 2, 29(2), 179-190, doi:10.4294/zisin1948.29.2_179.
  • Tokutaro Hatori (1978), The Tsunami Generated off Miyagi Prefecture in 1978 and Tsunami Activity in the Region, Bulletin of the Earthquake Research Institute, 53(4),1177-1189.
  • Tokutaro Hatori (1989), Characteristic of Tsunamis Associated with Aftershock and Swarm near Japan,Zisin 2, 42, 183-188.
  • Tokutaro Hatori (1996), The 1994 Sanriku-Oki Tsunami and Distribution of the Radiating Tsunami Energy in the Sanriku Region, Zisin 2, 49(1), 19-26, doi:10.4294/zisin1948.49.1_19.
  • Tokutaro Hatori (2012), The size of the Tsunami of the 2011 Tohoku-oki earthquake, Report of Tsunami Engineering, 29, 1-6.
  • Tokutaro Hatori (2014), Off-Sanriku Tsunami before and after the 2011 Tohoku-oki earthquske, Report of Tsunami Engineering, 31, 325-328.

  • * Interplate coupling offshore Tojoku


    Grid file for GMT (netCDF format) Suwa06JGR_Fig6.grd [38 KB](Courtesy of Yoko Suwa)

    Reference: Suwa, Y., Miura, S., Hasegawa, A., Sato, T., and Tachibana, K., Interplate coupling beneath NE Japan inferred from three‐dimensional displacement field, J. Geophys. Res., 111, B04402, doi:10.1029/2004JB003203, 2006.

    * Coseismic slip distribution of the 2011 Tohoku-oki earthquake


    Grid file for GMT (netCDF format) 2011coseism-slip-iinuma.grd [496 KB](Courtesy of Takeshi Iinuma)

    Reference: Iinuma, T., R. Hino, M. Kido, D. Inazu, Y. Osada, Y. Ito, M. Ohzono, H. Tsushima, S. Suzuki, H. Fujimoto, S. Miura, Coseismic slip distribution of the 2011 off the Pacific Coast of Tohoku Earthquake (M9.0) refined by means of seafloor geodetic data, J. Geophys. Res., 117, B07409, doi:10.1029/2012JB009186, 2012.