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初夏冲绳海槽中南部海域悬浮体含量的分布特点为：表层水体中部海区高，南 北海区低；中底层水体自南西至北东由低至高．从陆架到海槽断面的悬浮体含量分 布为陆架最高值区、陆坡最低值区和海槽低值区．悬浮体组成包括矿物岩石碎屑、生 物骨屑以及絮凝体．矿物岩石碎屑主要分布在陆架区中、下层水体，生物骨屑主要分 布在海槽区（整个水层）和陆架区上层水体，絮凝体在研究区都有分布．海槽区与陆 架区的悬浮体含量垂直分布和组分特征具有明显的差异．研究区悬浮体分布和组成 主要受控于黑潮对陆架物质向冲绳海槽输送的阻隔、生物生产量以及地形、地理环 境．
In the early summer, the distribution of suspended matter in the middle and southern part of the Okinawa Trough was characterized by high surface water in the central sea area and low in the northern and southern seas. The middle and bottom water bodies were from low to high in the southwest to the northeast. The distribution of suspended matter content from the shelf to the trough section is the highest shelf area, the lowest slope area and the lowest trough area. Suspension composition includes mineral rock debris, biological bone debris and flocs. Mineral rock fragments are mainly distributed in the shelf area. The lower water body and biological bone debris are mainly distributed in the trough area (the whole water layer) and the upper shelf water area. The flocs are distributed in the study area. The vertical distribution and compositional features of suspended matter in trough area and shelf area have obvious differences. The distribution and composition of suspended matter in the study area are mainly controlled by the barrier of the Kuroshio to the transport of the shelf materials to the Okinawa Trough, biological productivity, topography and geographical environment.