长江口水体表层泥沙含量遥感监测研究

Analysis on Suspended Sediment of Changjiang Estuary by Remote Sensing

利用近年长江口地区的SPOT遥感影像,对长江口表层悬浮泥沙浓度的空间分布和动态变化规律进行分析,绘制了长江口表层水体含沙浓度分级图。结合同步监测数据,对长江口表层悬浮泥沙扩散规律、高混浊水域的范围、河流泥沙入海形态等方面进行了深入的探讨,为长江口泥沙现状调查和近期运动规律反演和预测提供一条新的研究途径。

Based on the recent SPOT remote sensing images on suspended sediment and in combination with the needs of practical operation, the space distribution of concentration of suspended sediment and its dynamically changing laws at Changjiang estuary were analysed and the classification diagram of sediment content in water was drawn. The diffusion law of suspended sediment, the range of high turbid water region and the sea-entering form of river sediment were further discussed from monitoring data. The research results provides a new way for present investigation of sediment and the predication of sediment movement.