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基于日本“长风号”调查船在 1 997与 1 998年 1 0个航次的CTD资料 ,采用改进逆方法及改进动力计算方法对东海黑潮的流速、流量进行计算 .1 997年 5月出现了El Ni no现象 ,东海黑潮流量在 1 997年夏季减少 ,1 997年东海黑潮的平均流量也减少 .在 1 997年 1月与 6— 7月 ,即El Ni no现象出现前后 ,东海环流的流态有些不同 .在 1 998年 4至 1 1月黑潮在PN断面出现多流核心的结构 ,特别在 1 0— 1 1月出现 3个流核心 ,黑潮主流核的位置秋季时东移 .1 995年与 1 998年都是东海黑潮异常年 ,这些异常现象可能与冲绳岛以南出现的反气旋涡的强度变化以及从El Ni no现象过渡到La Ni na现象有关
Based on the CTD data of the “Changfeng” survey ship of Japan in 1 997 and 1 08 voyage in 1998, the flow rate and flow rate of the Kuroshio in the East China Sea were calculated by using the improved inverse method and the improved dynamic calculation method. In May 1997, El Ni no phenomenon, the Kuroshio flow in the East China Sea decreased in the summer of 1997, and the average flow of the Kuroshio in the East China Sea decreased in 1997. Before and after the phenomenon of El Ni no in January 1997 and June-July, the East China Sea The flow pattern of the circulation is somewhat different. From April to January 1998, the Kuroshio appeared to have a multi-stream core structure in the PN section. In particular, three flow cores were observed in January-January January. Eastward.1995 and1998 are both the anomalous Kuroshio in the East China Sea. These anomalies may be related to the intensity change of the anti-cyclone vortex emerging south of Okinawa and the transition from El Niño to La Ni na