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The current elements of the Kuroshio in the East China Sea are analysed and discussed using the temperature-salinity and GEK data of the PN section obtained during 1972-1983. The calculations have proved (i) that the 12-year's mean volume transport of the Kuroshio at PN in the 0-800 m layer is about 20×106m3/s; (ii) that the mean volume transport has seasonal variations, i. e. slightly stronger in spring and summer than in the other seasons; and (iii) that the period of high-volume transport thereof corresponds to the appearance of a meander of the Kuroshio south of Japan. It is also discovered that this Kuroshio meander usually appears after a sharp increase in such volume transport. Finally, the differences of the Kuroshio volume transport between the PN, E and Suao-Yonakuni-jima sections are discussed. 相似文献
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利用大戢山和吕泗两水位站(1978—1981)4年的观测资料讨论了长江口南、北两岸水位的低频变化。谱分析显示,两岸的水位低频变化均以年周期为主,但两岸间的水位差却以半年周期为主。结合浙江近岸底层34×10~(-3)等盐线的北伸位置和苏澳-与那国岛断面上黑潮净流量的季节性变化规律,认为半年振动周期是东海海水运动的重要特征之一。 相似文献
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1972—1983年期间东海(PN断面)的黑潮流况 总被引:3,自引:0,他引:3
本文利用1972—1983年期间PN断面的温盐和GEK资料,分析和讨论了东海黑潮的流况。计算证实:1.PN断面0—800米层黑潮的12年平均体积输送量约为20×106米3/秒;2.平均体积输送量有春夏强而冬秋弱的季节性变化,但幅度不大;3.PN断面的体积输送量出现高值时期恰对应了日本南部黑潮的大弯曲。并且发现,此大弯曲往往出现于PN断面上的黑潮体积输送量发生季节性陡增之后。最后,文章还讨论了PN断面、E断面和苏澳—与那国岛断面处黑潮各段体积输送量变化的差异。 相似文献
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