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连云港近岸海域沉积物的粒度在空间上具有“近岸细、远岸粗”的分布特征。为了探讨粒度的这种空间分布特征,利用端元分析模型和多变量分析方法对108个底质样品粒度特征进行了分析,结果表明,可以把连云港近岸海域沉积物划分为具有一定动力意义的3个粒级组,它们代表不同能量环境下形成的沉积物:潮流沉积、潮流-波浪混合沉积和波浪沉积,这些沉积物对应于前三角洲沉积物、动力改造沉积物以及原地海滩沉积物。
Lianyungang offshore sediments in the coastal grain size in the space with “near shore fine, far shore rough ” distribution. In order to investigate the spatial distribution characteristics of grain size, the grain size characteristics of 108 sediment samples were analyzed by using the terminal element analysis model and multivariate analysis. The results show that the sediment in Lianyungang coastal area can be divided into some dynamical Three grain-size groups represent the sediments formed under different energy regimes: tidal current, tidal current-wave mixing and wave sedimentation. These sediments correspond to the sediments in the former deltaics, dynamical remnants and in-situ beach sediments.