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Experimental study on suspended sediment concentration and its vertical distribution under spilling breaking wave actions in silty coast

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Abstract

In this paper, flume experiments are focused on sediment transport inside and outside the surf zone. According to the energy dissipation balance principle of sediment-laden flow and the similarity between energy dissipation of spilling breaking wave and hydraulic jump, formulas are proposed to predict time averaged suspended sediment concentration under both non-breaking and breaking waves. Assuming that the sediment diffusion coefficient, which is related with energy dissipation, is proportional to water depth, formulas are proposed to predict close-to-bed suspended sediment concentration and vertical distribution of suspended sediment under spilling breaking waves, and the prediction shows a good agreement with the measurement.

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Correspondence to Yun-feng Xia  (夏云峰).

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The research was financially supported by special fund for important and large scientific and technical projects from the Ministry of Communications (Grant No. 201132874660) and funds from Nanjing Hydraulic Research Institute (Grant No. Y210001).

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Xia, Yf., Xu, H., Chen, Z. et al. Experimental study on suspended sediment concentration and its vertical distribution under spilling breaking wave actions in silty coast. China Ocean Eng 25, 565–575 (2011). https://doi.org/10.1007/s13344-011-0046-1

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  • DOI: https://doi.org/10.1007/s13344-011-0046-1

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