福宁湾海域夏季大潮期悬浮泥沙输运特征及控制因素

根据福宁湾夏季水文泥沙实测资料，分析了研究区悬浮泥沙浓度变化特征，研究了悬浮泥沙的输运机制，探讨了悬浮泥沙输运的控制因素。结果表明，平面上，悬浮泥沙浓度从湾内到湾外呈现递减的分布趋势；垂向上，各站位平均含沙量由底层向表层逐层递减。悬浮泥沙在湾内表现为向陆方向输运, 在湾口和湾外整体则向西南方向输运，平流输运在悬沙输运中占主导地位。正常天气下，研究区夏季的悬沙净输运方向与余流方向基本一致；西南强风天气下，研究区悬浮泥沙的浓度增大，其输运方向受风向控制指向东北向。闽浙沿岸流（夏季）活动较弱，对研究区悬浮泥沙的输运基本没有影响。

Characteristics and controlling factors of suspended sediment transportation in summer spring tide in Funing Bay

Using the measured hydrological and sediment data in the summer Funing Bay, the variation characteristics of suspended sediment concentrations are analyzed, the transport mechanism of suspended sediment studied, and the controlling factors of suspended sediment transportation discussed in this paper. The results show that the suspended sediment concentration decreases from the inside to the outside of the bay in plane view. Vertically, the average sediment concentration of each station decreases from the bottom layer to the surface layer. Suspended sediment is transported landward within the bay, and moves southwestward in the mouth and outside the bay, and advection transport dominates the transport of suspended sediment. Under normal weather, the net transport direction of suspended sediment in the study area in summer is basically consistent with the residual flow direction. Under the southwest strong wind weather, however, the concentration of suspended sediment in the study area increases, and the transport direction turns to northeast. The Min-Zhe coastal current is weak in summer and has little effect on the transportation of suspended sediment in the study area.