Tomohiro Yasuda, Taro Kakinuma, Takashi Tamada, Gozo Tsujimoto


The field survey results obtained by the team of authors in the north of Miyagi Prefecture are summarized referring to a part of the survey results by other teams of the 2011 Tohoku Earthquake Tsunami Joint Survey Group. The inundation height above sea level was measured using a laser range finder with a reflection prism. The inundation height was generally larger at bay heads, as well as cave tips, except several points, which were sheltered by a peninsula or had a tapering area. The tsunamis reached inland far away from the sea along valleys and rivers. Not only steel frame buildings but also many reinforced concrete buildings were collapsed in Onagawa Town. According to the numerical simulation, the first tsunami from the west coast and the second tsunami from the east coast should come together in Utatsusaki Peninsula, which is consistent with the interviews to survivors.


tsunami; post event survey; inundation height; bidirectional tsunamis; Tohoku Tsunami


Arakawa, A. and V.R. Lamb. 1977. Computational design of the basic dynamical processes of the UCLA general circulation model, Methods in Computational Physics, 17, Academic Press, New York, 173-265.


Imamura, F., S. Koshimura, R. Ooya, Y. Mabuchi and Y. Murashima. 2011. Tohoku University model (version 1.0),, 1-12 (in Japanese).

Iwasaki, T. and A. Mano. 1979. Numerical simulation of two-dimensional tsunami runup by Euler's coordinates, Proc. 26th Japanese Conf. on Coastal Eng., 70-74 (in Japanese).

Kawai, H., M. Satoh, K. Kawaguchi, and K. Seki. 2011. Characteristics of the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami, Report of the Port and Airport Research Institute, 50, No. 4, 3-63 (in Japanese).

Mansinha, L. and D.E. Smylie. 1971. The displacement fields of inclined faults, Bull. the Seismological Soc. of America, 61, 1433-1440.

Mikami, T., T. Shibayama, M. Esteban, and R. Matsumaru. 2012. Field survey of the 2011 Tohoku Earthquake and Tsunami in Miyagi and Fukushima Prefectures, Coastal Engineering Journal, 54(1), Special Issue of 2011 Tohoku Tsunami.

Mori, N., T. Takahashi, T. Yasuda and H. Yanagisawa. 2011. Survey of 2011 Tohoku earthquake tsunami inundation and run-up, Geophysical Research Letters, 38, 6pp., L00G14, doi:10.1029/ 2011GL049210.

Mori, N., T. Takahashi and The 2011 Tohoku Earthquake Tsunami Joint Survey Group. 2012.

Nationwide post event survey and analysis of the 2011 Tohoku Earthquake Tsunami, Coastal Engineering Journal, 54(1), Special Issue of 2011 Tohoku Tsunami.

Suppasri, A., S. Koshimura, K. Imai, E. Mas, H. Gokon, A. Muhari and F. Imamura. 2012. Field survey and damage characteristic of the 2011 East Japan Tsunami in Miyagi Prefecture, Coastal Engineering Journal, 54(1), Special Issue of 2011 Tohoku Tsunami.

The 2011 Tohoku Earthquake Tsunami Joint Survey Group. 2011.

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.