1998年夏季南海水团分析

Analysis of water masses in the South China Sea in the summer of 1998

根据 1 998年夏季“南海季风试验 ( SCSMEX)”期间所获的 CTD资料 ,使用系统聚类、Fuzzy模式聚类、Bayes判别分析和 Fuzzy分析等水团分析方法 ,对南海水体的结构和水团配置状况等进行了分析 ,划出了南海存在的 9个主要水团 ,并对各水团的温、盐度特征进行了初析。在调查期间 ,南海本地水 (南海水 )几乎控制了整个调查海区 ,而黑潮水仅出现在台湾岛的西南海域 ;海水强烈混合发生在吕宋海峡附近 ;在中南半岛以东和吕宋岛以西海域 ,表层水明显下沉 ;在南海东南部可能有来自苏禄海的海水 ,其温。

Based on the CTD data obtained during SCSMEX in the summer of 1998, the structure of sea water and the configuration of water masses of the South China Sea during summer are analyzed with methods of water masses analyses referred to as hierarchical clustering, Fuzzy model clustering, Bayes discriminant analysis and Fuzzy analysis. Nine water masses are discriminated out, and their characteristics in temperature and salinity are primarily analyzed respectively. During this period, the local water of the South China Sea water nearly dominated over the whole investigated area, while the Kuroshio water only appeared in the region southwest of Taiwan Island. The intense mixing of the sea water occurred near the Luzon Strait. In the region east off Vietnam and the region west off Luzon Island, the Surface Water submerged obviously. In the southeast of the South China Sea, there maybe existed the water from the Sulu Sea, and its temperature and salinity characteristics were similar to that of the Kuroshio water near the Luzon Strait.