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沉积物物源组成的定量判识方法及其在冲绳海槽的应用
引用本文:杜德文,孟宪伟,王永吉,吴金龙.沉积物物源组成的定量判识方法及其在冲绳海槽的应用[J].海洋与湖沼,1999,30(5):532-539.
作者姓名:杜德文  孟宪伟  王永吉  吴金龙
作者单位:青岛国家海洋局第一海洋研究所!青岛,266003,青岛国家海洋局第一海洋研究所!青岛,266003,青岛国家海洋局第一海洋研究所!青岛,266003,青岛国家海洋局第一海洋研究所!青岛,266003
基金项目:国家863计划资助!863-820-01-02
摘    要:用多元成分数据统计分析中的端元估计算法,处理混合源沉积物地球化学数据定量判识沉积物物源端元的化学成分和比例。将该方法应用于已知端元的人工数据,端元的化学成分和含量的估计值与已知值非常接近。实验结果说明,这种成分数据分析算法是定量判识沉积物物源端元的有效方法。

关 键 词:物源端元  地球化学数据  冲绳海槽  沉积物
收稿时间:8/5/1998 12:00:00 AM
修稿时间:1999/4/10 0:00:00

METHOD OF ESTIMATING SEDIMENTARY END-MEMBERS AND ITS APPLICATION TO OKINAWA TROUGH REGION
DU De-wen,MENG Xian-wei,WANG Yong-ji and WU Jin-long.METHOD OF ESTIMATING SEDIMENTARY END-MEMBERS AND ITS APPLICATION TO OKINAWA TROUGH REGION[J].Oceanologia Et Limnologia Sinica,1999,30(5):532-539.
Authors:DU De-wen  MENG Xian-wei  WANG Yong-ji and WU Jin-long
Institution:First Institute Of Oceanography , State Oceanic Administration, Qingdao, 266003;First Institute Of Oceanography , State Oceanic Administration, Qingdao, 266003;First Institute Of Oceanography , State Oceanic Administration, Qingdao, 266003;First Institute Of Oceanography , State Oceanic Administration, Qingdao, 266003
Abstract:The method of composition data analysis used in estimating origin end-members fromsubmarine sediment is introduced here. The method is demonstrated for known end-membersartificial data; the estimated error between known and estimated proportion of end-members is 7.8%,correlation coefficient between the known and estimated end-members is close to l, and theircompositions are almost the same. These results have shown that the method is efficient ineshmahng end-members from submarine sedimentary samples. Further, the method is used forsubmdrine sedimentary datasets of the Okinawa Trough Region. Three origin end-members areidenhfied from the datasets successfully. These extimated endmembers (Tab.7) represent continental,biologic and volcani corigin composition, respechvely. Geochemical characters of the continentalendmembers are that S iO2, Al 2 O3, Ti O2, S r, Zr, Hf and REE are high, and Cao and CO2 are low inabundance; the biologic end-member has characters of high CaO and CO2 and low SiO2 and Al2O3in abundance; the volcanic endmember is characterised by high Cu Co, Ni, S and Cr contents.Estimated proportion range of continental, biologic and volcanic end members are 20.3%- 81.2%,3.6%-64.9% and 1.7%-38.1%, respechvely. Eshmated distribuhon figures of these end-membersare presented (Fig. 1, Fig.2,Fig.3) in this paper too. The clistribuhon of eshmated endmembers arecomped with that obtained by edhonal method- petrology and Anneralogy method; they aresimilar in the mass, but the former connins more detail. The method is also adaptable for petrology,pedology and water pollution studies.
Keywords:Sedimentary origin end-members Composition data analysis Geochemistry data Okinawa Trough
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