九龙江河口湾高浓度悬沙水体的分布与扩散特征

通过对九龙江河口湾洪水期和枯水期含沙量等值线的分析,描述了河口湾内悬浮泥沙的时空分布特征及其在涨潮和落潮期间的变化情况,并对洪水期大潮湾内水质点的滞流点位置作了计算.结果表明,水流运动和水体含沙量沿入海方向均呈现有规律的变化,河口湾内存在两个主要水流滞流区,一处位于海门岛北部,一处位于鸡屿东侧.悬浮泥沙的分布和水流运动间呈现明显的相关性.

Distribution and diffusion of water body with high suspended sediment concentration in Jiulongjiang Estuary

By analyzing isogram of suspended matter in Jiulongjiang Estuary at both flood and low water seasons, this paper describes the space-time distribution of suspended matter and its variation at ebb and flow tide periods. In addition, the paper calculates the resident position of water current down to the Xiamen Bay during spring tide at flood season. The results indicate that both the current movement and the distribution of suspended matter have a regular variation in the seaward direction. There are two major resident regions of water current in the estuary. One locates in the north of Haimendao Islet, another in the east of Jiyu Islet. It is clear that there's some relationship between the distribution of suspended matter and the current movement.