Daisuke Tatsumi, Takashi Tomita


The previous real-time tsunami prediction based on the inversion method and the linear superposition can predict the tsunami in near shore area quickly, but it can not predict the tsunami inundation. The present study developed the empirical formula to estimate the overflow rate from the tsunami profile predicted by the previous method. Moreover, the level fill method was applied to predict the tsunami inundation from the estimated overflow rate. Numerical experiments using the actual topography and the historical earthquakes proved that the combination of the previous method, the empirical formula to estimate the overflow rate, and the level fill method can predict the tsunami inundation quickly from the offshore tsunami observation.


real-time tsunami inundation prediction; GPS Buoy; level fill method


Goto, C. and K. Sato. 1993. Development of tsunami numerical simulation system for Sanriku Coast in Japan, Report of the Port and Harbour Research Institute, Vol.32, No.2, 44 p. (in Japanese).

Honma, H. 1940. Coefficient of flow volume on low overflow weir, Civil Engineering, JSCE, Vol.26-6, pp.635-645 (In Japanese).

Kato, F., M. Fukuhama, H. Fujii, T. Takagi, and T. Kodama. 2007. An effective tsunami damage estimation method considering dike height, Annual Journal of Coastal Engineering, JSCE, Vol.54, pp.261-265 (in Japanese).

Kato T., Y. Terada, K. Ito, R. Hattori, T. Abe, T. Miyake, S. Koshimura, and T. Nagai. 2005. Tsunami due to the 2004 September 5th off the Kii peninsula earthquake, Japan, recorded by a new GPS buoy, Earth, Planets, and Space, Vol. 57, pp. 297-301.

Ports and Harbours Bureau of Ministry of Land, Infrastructure, Transport and Tourism. Website. Nationwide Ocean Wave Information Network for Ports and Harbours, (in Japanese).

Rural Development Bureau and Fisheries Agency of Ministry of Agriculture, Forestry and Fisheries, and River Bureau and Ports and Harbours Bureau of Ministry of Land, Infrastructure, Transport and Tourism. 2004. Guidelines of Cost Benefit Analysis for Coastal Projects, pp.33-48 (in Japanese).

Sato, R. 1989. Handbook of Earthquake Fault Parameters in Japan, Kajima Institute Publishing Co., Ltd., pp.126-127 and p.210 (in Japanese).

Tatsumi, D., and T. Tomita. 2008. Improvement of real-time tsunami prediction based on inversion method by using earthquake information, Proceedings of 31st International Conference on Coastal Engineering, ASCE, pp.1409-1420.

Full Text: PDF

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