Propagation characteristics of historical tsunamis that attacked the east coast of Korea |
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Authors: | Chae Ho Lim Jae Seok Bae Jong In Lee Sung Bum Yoon |
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Institution: | (1) Department of Civil and Environmental Engineering, Hanyang University, Ansan, Kyeonggi, 426-791, Republic of Korea;(2) Water Resources Research Department, Korea Institute of Construction Technology, Goyang, 411-712, Republic of Korea |
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Abstract: | In this study, a numerical modeling system based on the dispersion–correction finite difference scheme equipped with a grid-nesting
scheme is constructed. The model is applied to simulate the propagation of three historical tsunami events that attacked the
east coast of Korea. The calculated free-surface displacements for the cases of the 1983 Akita and the 1993 Okushiri tsunamis
are compared with the observations at four tidal stations along the east coast of Korea. The comparison shows that the results
agree well with the observations. The analyses of the simulated results show that underwater topography, such as submerged
rises and ridges, plays an important role in the propagation of tsunamis in this region. |
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Keywords: | Dispersion– correction Finite difference Grid-nesting scheme Historical tsunamis Underwater topography |
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