黑潮和中国近海环流

Kuroshio and circulations in China seas

本文根据历史资料总结和讨论了黑潮对中国近海环流影响的基本结果,指出经巴士海峡进入南海和沿台湾海峡向北运动的黑潮分支,其年际变化明显,并认为该黑潮分支的运动状况对中国近海特别是南海和东海南部的中、下层环流影响显著,需要作进一步的调查研究。

This paper summerizes and discusses the fundamental results in the previous works on the influences of the Kuroshio on the circulations in the China seas, which include the Bohai sea, Huanghai sea, the East China sea and the South China Sea. It is concluded that the Kuroshio exercises distinct influences on the circulations in the China seas, especially in two areas. In its flow northward along the continental shelf of the East China sea, a branch of the Kuroshio enters the Huanghai sea where it forms the Huanghai sea warm current, This conclusion has been proved by many researches. Another branch of the northward Kuroshio enters the southern part of the East China Sea via the waters to the north of the Taiwan Island and appoaches directly the southern waters of Zhejiang. However, the track and intensity of this branch wait for further survey. The second area under influences is waters south of the Taiwan Strait and west of the Bashi Strait. By passing through the Bashi Strait and enter- ing the south of the Taiwan Strait, the major constituent of this Kuroshio branch enters the south China Sea to form the middle and lower layer water masses and the minor constituent moves north via the Taiwan Strait. The later subbranch has received much survey. However, the available survey data indicate its varying annual chenses and distinct differences in'different research results. Therefore it is concluded that the Taiwan Strait and its adjacent waters is a key area where the movement of the Kuroshio branch has distinct influences on the China seas circulations. Further survey and research are needed in this area. The seneral structure of the China seas circulations especially the middle and lower circulations in the South China Sea and the southern waters of the East China Sea can only be understood when the current structure in this area is understood.