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研究样品由“向阳红１６”号于１９９２年６～７月间取自冲绳海槽中部．对表层沉积物的地球化学数据的因子分析和典型化学组分的相关分析结果表明，冲绳海槽中部表层沉积物主要包括陆架来源、生物源和火山热液源组分，且以陆源组分为主；运用修正的富集团子（ＥＦ）分析结果表明，沉积物中陆源、生物源、火山热液源组分在不同区域的相对分布是显著不同的．
The study sample was taken from the middle of the Okinawa Trough by “Xiangyanghong 16” from June to July 1992. The analysis of the geochemical data of the surface sediments and the correlation analysis of the typical chemical components show that the surface sediments in the central Okinawa Trough mainly consist of shelf source, biogenic source and volcanic hydrothermal source components, and the terrestrial components are Based on the results of the modified cluster analysis (EF), the relative distributions of terrigenous, biogenic and volcanic hydrothermal source components in sediments in different regions are significantly different.