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《Acta Sedimentologica Sinica》 2003-03
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Application of System Cluster Analysis to Classification of Modern Sedimentary Environment———A Case Study in Qiqu Archipelago Area

LI Yu-zhong CHEN Shen-liang (State Key Laboratory of Estuarine & Coastal Research, East China Normal University, Shanghai 200062)  
By system cluster analysis on sorting coefficient, percentage of sand and clay i n modern sediments, The modern sedimentary environment in Qiqu Archipelago area can be well classified into three types of sub-environments, which are in line with the environmental features there. In addition to hydrodynamic function, sediment ary environment is strongly affected by material sources and topography. Among 3 factors by which sedimentary environment is well classified, the factor of perc entage of sand is the variable which is most significantly affected by material sources, and sorting coefficient is the parameter which is most sensible to the reciprocal functions between currents and topography. The sensibility of skewnes s to variation of sedimentary environment is finite. Kurtosis can hardly be used to classify sedimentary environment. Particular hydrodynamic condition should b e also taken into account.
【Fund】: 教育部科学技术研究重点项目 (批准号 :0 1 0 79);; 国家自然科学基金 (批准号 :40 2 760 2 7)资助
【CateGory Index】: P736.21
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