冰后期海侵,海岸必然遭受改造。东海海岸砂源与海侵时期陆架均夷过程密切相关。现代堆积海岸的物质多具陆源性,但主要通过沉积物的再搬运和再沉积所形成。宽缓陆架及其大量松散物质的储备,有利于海侵时期东海陆架的细粒沉积物,在潮流作用下往复搬运和向岸迁移、加积。 After the ice transgression, the coast must be transformed. The sand source on the coast of the East China Sea is closely related to the process of equilibria on the shelf during the transgression. The material of the modern accumulation coast is mostly of terrigenous origin, but is mainly formed by the re-transport and redeposition of sediments. Broad continental shelves and a large amount of loose material reserve, is conducive to the transgression of the East China Sea shelf fine sediment, in the tidal current handling and migration to the shore, plus plot.