Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Improvement of Prediction Method of Coastal Scour and Erosion due to Tsunami Back-flow
Yoshimichi YAMAMOTOKenji NARIYOSHIVu Thanh CA
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2009 Volume 65 Issue 1 Pages 511-515

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Abstract

When the Indian Ocean tsunami attacked in December, 2004, large-scale erosion or large-scale scour was caused in various places. If the coastal scour by the first tsunami wave caused the destruction of a dike or a seawall, it is also considered that the second tsunami wave may generate much more serious damage. Therefore, research on a predicting method of the coastal erosion and scour by tsunami is important. In this research, a numerical model which can predict the coastal erosion and scour in a wide area including land as easily as possible has been built on the basis of Takahashi's et al model. Moreover, predicting methods of the maximum scour depth and its position in the front beach of the seawall are also proposed.

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© 2009 Japan Society of Civil Engineers
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