【摘要】 <正> 前言研究浅海水团的分布、消长与变化,不仅是物理海洋本身的内容,而且与渔业生产的关系极为密切。浅海水团的分析与大洋水团的分析有不同的特点,浅海水团缺乏大洋水团的保守、稳定更多还原

【Abstract】 According to the sea surface and bottom temperature-salinity data from 70 sta- tions in the North Yellow Sea and Bohai Sea from 1978 to 1980, the paper has divided the sea region into five water masses in the methods of stepwise-cluster analysis and fore given critical value to controle water masses number and range. The following analysis results can be shown: 1. The Bohai and the Yollow Sea warm Water Mass is of the high salinity property in winter and of moderate salinity property in summer, which is smaller in distribution range in winter-spring and larger in summerautumn. 2. The Bohai Sea Water Mass is of the moderate temperature and salinity property, which is smaller in temperatare-salinity changes and larger in range in winter-spring. 3. The Yellow Sea Cold Water Mass is a high salinity water mass, which is the strongest of the five in conservative property and larger in range from May to August. 4. The Bohai Sea coastal water is a instability water mass, which is lower in salinity, smaller in temperature change, larger in range in spring and autumn and smaller in winter and summer. 5. The River Diluted Water is lower salinity waters whose temperature variation is larger, which is larger in range in summer and smaller in range in winter. The geographic location distribution of water masses is one after another from the east of area to west, and each water mass has its own model in different season. Besides, the paper has approached the relationship between the decreasing and inc- reasing variability of the water masses and fishing grounds as well.更多还原