沿岸输沙量的年变化
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摘要: 在本文中根据努瓦克肖特港的实测泥沙资料,确定了贝克尔(Bijker)沿岸输沙率公式中的床面糙率r。当海滩上泥沙的中值粒径D50为0.2毫米时,r为0.03—0.04米。 用该港1976—1982年的波浪观测资料,计算了各年的沿岸输沙量,其结果表明输沙量的年变化是不容忽视的,在七年中输沙量的最大值与平均值之比为1.3,最大值与最小值之比为1.9。
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Bijker, E,W.,Some Considerations about Scales for Coastal Models with Movable bed.Delft Hydraulics Lab,Pub,No,50, 1967, 1-142. Van de Graaff, J,and Van Overeem,J.,Evaluation of Sediment Transport Formulae in Coastal Engineering Practice, Coastal Engineering,3(1979),1-32. Galvin, C,and Vitale, P.,Longshore Transport Prediction-S,P,M,1973 Equation,Proc, 15th Costal Engi,Conf.,2(1976),1133-1148. Massie, W,W,(Editor),Harbor and Beach Problems, Coastal Engineering, Vol.2, Delf University of Technology,1980, 103-126. Goda, Y.,A Synthesis of Breaker Indices, Trans,JSCE,2(1970),Part 2. Van de Graaff.J.,Discussion on Evaluation of Sediment Transport Formulae in Coastal Engineering Practice, Coastal Engineering,4(1980),180-181.
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