基于地球化学参数的海底沉积物端元定量判识方法研究Ⅰ.分离沉积物端元的最优斜交成分因子算法
Parting method of end-members from submarine sedimentby geochemistry data Ⅰ.Algorithm of optimum oblique composition factor analysisfor parting end-members from submarine sediments
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摘要: 系统介绍“分离沉积物端元的最优斜交成分因子算法”,此算法包括主成分分析、因子得分成分化和最优斜交变换三部分.此算法可获得成分化的非负的斜交因子得分,弥补了Q型因子分析仅能用于样品间的相互关系及样品的分类研究,而不能胜任海底沉积物端元物质分离工作之不足.方法适合于沉积物物源端元定量分离工作.将此方法应用于冲绳海槽海底表层样,成功地分离出长江陆源物质.此方法同样适合于诸如岩石、水体、土壤污染等混合过程的端元定量分离工作.Abstract: Algorithm of optimum oblique canposition factor analysis is intraluced.It includes three procedures:Q-factor analysis,composition tnmsfomung and optimum oblique transforming.It can derive out factors which are canposition andltonnegative.,It is not only adaptable to sample classification,but also to parting end-members fran sulanaritte sediments.Finally,the method is darnnsaated on Okinawa Trough submarine sediment data sets,Changjiang origin end-member is parted out firm those data sets successfully.The method is also adaptable to petrolog,pedology and water pollution study.
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