The cluster analysis of the water masses in western Taiwan Strait from hydrologic and chemical factors

On the basis of mixture theory of concentration of Helland-Hansen (Mao et al,1964; Helland-Hansen.1916).this paper takes salinity as a conservative factor is the process of dilution and mixture and selects by relative analysis the hydrological and chemical factors which are closely related to salinity.Then making use of the Q type mufti-dimensions cluster analysis,we get the results that the water masses in the western Taiwan Strait include the follwing,the coastal water along Fupan,Zhejiag and Guangdong Provinces,the diluted fresh water of Minjisag.Jiulong sad Hanpang Rivers,the nuxing water in the Taiwea Strait,upwelling cold/warm water to the northwest of the Taiwan Shoal end the upwelling water to the east of Guangdong.The mixing water in the Taiwan Strait during spring and summer is composed of a Kurashio branch,the surface water of the South China Sea.coastal water along Fujian,Zhejiang and Guaogdoog Provinces.While in autumn and winter,it is mixed up from Kuroshio branch,the shelf water is the Fast China Sea,and the coastal water along Fujian,Zhejiang and Guattgdong. There is an obvious seasonal change of growth and decline in these water masses.