水团分析中的模糊数学方法

FUZZY SETS METHODS IN ANALYSIS OF WATER MASSES

使用多年平均温盐资料,应用模糊数学的一系列方法,对渤、黄、东海整个海域逐月进行了水团划分与分析。用移动格域法和模糊积分法确定水团的聚类中心,依Fuzzy-F统计判定海区内水团的个数;用模糊ISODATA聚类法调整软划分矩阵,依模糊贴近度衡量水团之间的相近程度,用模糊熵讨论水团的不均匀程度,从而给出了在水团分析中系统地应用模糊数学方法的实例和计算流程。

Several methods of Fuzzy Sets are applied systematically to the classification and analysis of water masses month by month in all the areas of Bohai Sea, Yellow Sea, and the East China Sea where temperature and salinity values which are averaged every month. The cluster centres of water masses are determined by method of moving lattice areas and Fuzzy Integral; the number of water masses in studied sea area is judged with the Fuzzy-F discrimination; the elastic classification matrix is adjusted using the method of fuzzy ISODATA; approximate degrees are weighed with the fuzzy approach degrees between water masses; inhomoge-neity of every water mass is discussed using fuzzy entropy. Technical process of computation is presented in this paper, an example applied systematically the Fuzzy Sets method to analysis of water masses is given.