Terrigenous det ritus samples ext racted f rom a piston core A23 , located in the southern Okinawa Trough , were analyzed in terms of the grain-size characteristics.

• 对取自冲绳海槽南部的A23孔经前处理后的沉积物样品进行了粒度测试，探讨了陆源沉积层序的粒度特征。