摘要
利用“中韩水循环动力学合作研究”和“中国近海海洋环境综合调查”( 1 996年 4月 -1 999年 1月 )期间各季节 1 2 8°E以西的校正后的 CTD现场水文调查资料 ,对黄、东海温、盐跃层在 4个不同时期 (成长、强盛、消衰和无跃期 )的各特征值的分布特性及其季节变化作了探讨和分析。结果表明 :( 1 )黄海底层显著冷水团的存在 ,使黄海以温跃层占绝对主导地位 ;东海的沿岸海区因受长江径流的影响则以盐跃层为主导。 ( 2 )温跃层的强度主要取决于与其相联的上、下层水团的强弱。冷水团的存在是产生强跃层的根本原因。( 3)夏季东海区双温跃层从浙江近海到济州岛以南水域连成片 ,其分布范围恰好与冬季入侵陆架的黑潮水相一致。 ( 4 )长江冲淡水舌状盐跃层强度等值线在各季节的伸展情况反映了长江冲淡水在各季节的扩散情况 ,一年当中 ,其轴向先从南往北转 ,再从北往南转。 ( 5 )
In this paper, the characteristics of the thermocline and harocline in the Huanghai Sea and the East China Sea in different periods are depicted and analyzed by using the observed CTD data west of 128°E in different seasons from April, 1996 to January, 1999. The results show that (1) thermocline is dominant absolutely in the Huanghai Sea due to the existence of Huanghai bottom cold water mass, while halocline in coastal sea area of the East China Sea is significant due to the influence of Changjiang River runoff; (2) the strength of thermocline is controlled by the different water mass in its corresponding upper and lower layers, and the basic reason for inducing thermocline is the existence of bottom cold water mass; (3) in summer, the double thermoclines in the East China Sea become distinct from Zhejiang coastal area to the area south of Cheju Island, and its distribution area just coincides with the frontier of the Kuroshio water intruding into the continental shelf in winter; (4) the stretching patterns of halocline strength contours in different seasons are similar to the spreading patterns of the Changjiang Diluted Water; (5) there are no thermocline and halocline in the Subei shoal area and the Taiwan Strait all the year round.
出处
《黄渤海海洋》
CSCD
北大核心
2001年第3期8-18,共11页
Journal of Oceanography of Huanghai & Bohai Seas
基金
国家重点基础研究发展规划资助项目 (编号 :G1 9990 4 3 80 0 )
关键词
东海
盐跃层
特征值
季节变化
黄海
温跃层
分布特征
Huanghai Sea and East China Sea
thermocline and halocline
characteristic value
seasonal variations
