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四、副热带逆流的可能成因关于副热带逆流形成的原因,迄今尚无一个完满的普遍接受的解释。20年来,不少学者提出了几种有关逆流成因的可能解释,主要的有:1)吉田和城所的风应力反气旋涡度的“槽”理论;2)杉原伸夫(Suginohara,1973)的风生大洋环流三层模式;3)竹内谦介(Takeuchi,1983;1984)的副热带锋及副热带逆流的形成机制和数值模式;4)Cushman-Roisin(1984)的不考虑Ekman辐聚的副热带锋生成论;5)White & Walker(1985)的夏威夷群岛的影响论等。总的讲来,吉田和城所的理论提出
Four, the possible causes of the subtropical countercurrent On the causes of the formation of the subtropical counter-current, so far there is no perfect, generally accepted explanation. In the past 20 years, many scholars have proposed several possible explanations of the causes of the countercurrent. The main ones are as follows: 1) The “groove” theory of the wind-induced vorticity vorticity in Yoshida and the city; 2) Suginohara’s (1973) 3) the formation mechanism and numerical model of subtropical front and subtropical countercurrent in Takeuchi (1983; 1984); 4) the subtropical front without Ck Eman divergence of Cushman-Roisin (1984) 5) White & Walker (1985) the impact of the Hawaiian Islands and so on. In general, Yoshida and the city’s theory put forward