American Society of Civil Engineers


Analysis for the Dispersion Zone of Sediment Concentration Flowed into the Small Estuary


by Sang-Kil Park, M.ASCE, (Professor, Dept. of Civil Engineering, Pusan National Univ., Busan, South Korea. E-mail: sakpark@pusan.ac.kr), Jong-Su Yoon, (Graduate student, Dept. of Civil Engineering, Pusan National Univ., Busan, South Korea), Byung-Dal Kim, (Graduate student, Dept. of Civil Engineering, Pusan National Univ., Busan, South Korea), Un Ji, (Post-Doc, Dept of Civil and Environmental Engineering, Myongji Univ., Yongin, South Korea E-mail: jiuncivil@gmail.com), and Do-Hoon Kim, (Customer Service & Facilities Management Team, Korea Water Resources Corporation — Busan Regional Office, Busan, South Korea)

pp. 1-11, (doi:  http://dx.doi.org/10.1061/40976(316)353)

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Document type: Conference Proceeding Paper
Part of: World Environmental and Water Resources Congress 2008: Ahupua’A
Abstract: The diffusion zone of sediment concentration in a small estuary and a coastal area with and without jetties was analyzed using numerical and physical models. It was assumed that sediment concentration was constant during intermediate flows, and was high in the beginning of high floods and decreased over time. The sediment diffusion zone and concentration for three cases, without the jetty, with only south jetty, and with the jetty, were examined in this study. In addition, the jetty was constructed in the field with the same design used in numerical and physical modeling and the diffusion zone of sediment concentration was monitored. The field data was similar to the results of numerical and physical modeling. Therefore, the reduction rate of sediment concentration by waves and the diffusion zone affected by increased sediment concentration were obviously decreased due to the construction of the jetty.


ASCE Subject Headings:
Sediment
Estuaries
Coastal environment