- 公益社団法人 土木学会
- 土木学会論文集B2(海岸工学) (ISSN:18842399)
- vol.69, no.2, pp.I_236-I_240, 2013 (Released:2013-11-12)
The tsunami generated by the 2011 off the Pacific coast of Tohoku earthquake inundated coastal flat areas, moved auto vehicles, boats and ships and destroyed part of a breakwater in Hachinohe Port. In this paper, propagation and inundation calculations of the tsunami are implemented from an estimated tsunami source. Consideration of the breakwater damage in the calculations provides a good result of the tsunami in the port in comparison with the waveform observed at a tide station in the port, the measured inundation border and heights of tsunami watermarks. Based on the time of breakwater destructions in the calculation, failure mechanisms of the breakwater damage are estimated. Further, movement of a ship in the port is calculated and compared with a result of video footage analysis.