土木学会論文集B2(海岸工学)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
論文
津波により侵食された河口部のsink効果による周辺海浜での汀線後退
Hoang Vo CONG田中 仁三戸部 佑太
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2014 年 70 巻 2 号 p. I_506-I_510

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The Great East Japan Tsunami in March, 2011 caused the significant changes of morphology on Sendai Coast. The flushing of sand spit in front of Nanakita River mouth and the breaching at Akaiko area can be observed. This study investigates the erosion of shoreline on the right side of Nanakita River mouth and the recovery of the breaching after the tsunami. Estimation of diffusion coefficient, which is an important parameter in numerical simulation of shoreline change, has been carried out for both study areas from measured data of erosional area propagation. These values of diffusion coefficient have been used to reproduce the erosion and the recovery of shoreline positions at study areas. The results show good agreement between the analytical result and measurement.

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