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1 March 2016 Simulation of Tsunami Runup in the Tone River Using Generalized Coordinate System and Influence of River Mouth Bar on Tsunami Water Level
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Abstract
Nikaido, R.; Aoki, S.; Tamura, H., and Jinbo, M., 2016. Simulation of tsunami runup in the Tone River using generalized coordinate system and influence of river mouth bar on tsunami water level. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 28 - 32. Coconut Creek (Florida), ISSN 0749-0208.This study simulated the tsunami runup in the Tone River using generalized coordinate system and discussed influence of river mouth bar on tsunami water level. This simulation focused on the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami. Numerical simulation of the 2011 Tsunami runup in the Tone River and comparison of the results with the field data showed that the model using generalized coordinate system gave more accurate results than the model using the Cartesian coordinate system. This may be because the configuration of the curved river was precisely represented by the generalized coordinate system. Comparison of the computed results between the three cases, no removal, half removal and all removal of the river mouth bar, showed that the existence of the river mouth bar decreased water level and reduced inundation depth in the Tone River estuary. Therefore, the river mouth bar has tsunami reduction effects of tsunami disaster in the river.
©Coastal Education and Research Foundation, Inc. 2016
Ryuji Nikaido, Shin-ichi Aoki, Hirotoshi Tamura and Masanobu Jinbo "Simulation of Tsunami Runup in the Tone River Using Generalized Coordinate System and Influence of River Mouth Bar on Tsunami Water Level," Journal of Coastal Research (JCR) 75(sp1), (1 March 2016). https://doi.org/10.2112/SI75-006.1
Received: 15 October 2015; Accepted: 15 January 2016; Published: 1 March 2016
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