A PRELIMINARY APPROACH OF THE UPWELLING FOR THE NORTHERN SOUTH CHINA SEA
南海北部上升流的初步探讨

In this paper, the appearance of upwilling for the nor them South China Sea is expounded and analysed through the statistic structures of the temperature fields on the surface and in the sections of the sea. The possible causes of formation of the upwelling are explained mainly in terms of Wind-Driven and Eddy-Driven Upwelling, in other words, there are two types of upwelling in this region. Comparing the speeds and the directions of the sea surface currents against those of the wind in the upwelling area, we find that the Wind-Driven Upwelling in this region is nearly in agreement with the theory of Ekman (1905).