【摘要】 根据1978—1980年渤海及北黄海70个测站的表、底层温、盐资料,用预先给定控制临界值的聚类方法,在该海域划分出5个水团。分析结果表明。1.渤黄海暧水团在冬季为高盐特征,夏季为中盐性质;其分布范围在冬—春季较小而夏—秋季较大。2.渤海水团为中温中盐性质:其温、盐度变化较小而冬—春季范围较大。3.黄海冷水团是一个高盐水团,它在5个水团中保守性最强,而从5月至8月范围较大。4.渤海沿岸水是一个不稳定的水团,其盐度较低,温度变化较小,春季和秋季范围较大而夏季和冬季较小。5.江河冲淡水是温度变化较大的低盐水,其范围夏季大而冬季小。水团的分布,在地理位置上是从该海区之东向西,一层套一层,而各水团在不同季节有自己的模式。此外,本文还探讨了水团消长变化和渔场的关系。更多还原

【Abstract】 According to the sea surface and bottom temperature-salinity data from 70 stations in the North Yellow Sea and Bohai Sea from 1978 to 1980, the sea region have been divided into five water masses by using the method of stepwise-cluster analysis with fore given critical value to control water masses number and range.The analysis results show: 1. The Bohai Sea 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 summer-autumn. 2. The Bohai Sea Water Mass is of the moderate temperature and salinity property, which is smaller in temperature-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 water 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 increasing variability of the water masses and fishing grounds as well.更多还原