本文根据瓦登海(Waddensea)潮滩沉积物。~(210)Pb强度的测定和有关实验,讨论了~(210)Pb沉积速率测定法在浅水动力环境中应用所存在的一些问题和原因;提出了~(210)Pb“转换时间”和“沉降时间”概念;分析了泥沙运动与沉积物~(210)Pb强度的关系并依据粒度指标对某些不规则~(210)Pb剖面进行修正;发现Jade湾潮滩现代沉积速度为0.16—0.29cm/a,Greetsiel为0.16cm/a,Afsluitdfijk大坝附近达6.0cm/a,反映了大坝工程改变动力环境后出现的聚淤现象。 This article is based on the tidal flat sediments of the Waddensea. ~ (210) Pb and its related experiments, some problems and causes of the application of ~ (210) Pb deposition rate in shallow water dynamic environment are discussed. The “210 Pb” conversion time and the “ Sedimentation time ”concept. The relationship between sediment movement and Pb ~ (210) Pb concentration in sediments was analyzed and some Irregular ~ (210) Pb profiles were corrected according to the grain size index. It was found that the modern depositional velocity of Tidal Flat in Jade Bay is 0.16 ~ 0.29cm / a, Greetsiel is 0.16cm / a, and Afsluitdfijk dam is 6.0cm / a, which reflects the silting phenomenon after the dam project changed the dynamic environment.