论文部分内容阅读
用多年（１９５８～１９９０年）温盐资料分析整个渤、黄、东海水型分布，阐明本海区上层水均为混合变性水。冬季水型分布形如＂λ＂字，可视为本海区的初始水型分布，亦即各水团形成的开始。其他季节水型分布向＂川＂字形转化；明显反映本海区存在３种水系，即外海水系、混合水系和沿岸水系。指出根据水型分布划分水系边界的合理性。依照水型分布划分了水系．外海水系与混合水系的界限，低温部分的分界盐度值为３４．２０；高温部分的分界盐度值，随温度季节性增高而降低，即从２月的３３．８０降至８月的３２．５０．混合水系与沿岸水系的划分均以盐度为标准，随季节不同变动于２９．５０～３１．００之间，一般取３０．００为界。分析了水系边界的季节变动。在本海区，表层外海水系冬强夏弱；底层水系边界冬、夏季则互为交错。根据水系边界变动可以为本海区海水运动的研究提供参考。
The distribution of water types in Bohai Sea, Yellow Sea and East China Sea was analyzed by using temperature and salinity data from 1958 to 1990, and the upper waters in this area were all mixed and denatured. In winter, the distribution of water patterns such as “λ” can be regarded as the initial water pattern of the sea area, that is, the beginning of each water mass formation. In other seasons, the distribution of water patterns changed into “Sichuan” glyphs; obviously, there were three kinds of water systems in the sea area, that is, the outer sea system, the mixed system and the coastal system. The rationality of dividing water system boundary according to water distribution is pointed out. Divided water system according to water distribution. The boundary salinity value of low temperature part is 34.20. The boundary salinity value of high temperature part decreases with seasonal increase of temperature, from 33.80 in February to 32 in August .50. The division of the mixed water system and the coastal water system are based on the salinity as the standard, varying with the seasons between 29.50 ~ 31.00, generally take 30.00 for the community. The seasonal variation of water system boundary is analyzed. In the sea area, the surface seawater is weak in winter and strong in summer; the boundary of the bottom water system is staggered in winter and summer. According to the variation of water system boundary, it can provide a reference for the research of seawater movement in this area.