东海以拥有世界上宽阔的大陆架——东海大陆架和典型的弧后盆地——冲绳海槽而著称于世。由于物质来源、水动力、水深、地形、距岸远近、生物作用、火山作用等的不同,海底分布着各种不同的沉积物,这些沉积物以碎屑沉积为主体,按粒度明显可分两大类,即细的泥和粗的砂。而东海沉积物分布的基本模式是,大体 The East China Sea is famous for its wide continental shelf - the East China Sea continental shelf and the typical backarc basin - the Okinawa Trough. Due to different sources of materials, hydrodynamics, water depth, topography, distance to the shore, biological functions, and volcanism, various sediments are distributed on the seabed. These sediments are mainly composed of clastic sediments and are obviously divided into two major sizes Class, that is, fine mud and coarse sand. The basic pattern of sediment distribution in the East China Sea is generally