南海东北部夏季逆风流数值模拟

以１９３９－１９７８年７月平均风场代表夏季风，数值求解南海流场对风应力输入的响应。结果表明，即使盛夏仍有黑潮水经巴土海峡流入南海；风应力与陆坡地形相互作用的影响。在１１６Ｅ以西陆坡上占优势，形成辐射上升，生成低水位带及冷水带，其北侧生成夏了逆风流；１１６Ｅ以东陆坡上，黑潮水占优势，具有向北分量流速的黑潮水在那里辐聚下沉形成高水位带及暖水带，其北侧生成东北向顺风流。

NUMERICAL SIMULATION OF SUMMER UPWIND FLOW IN THE NORTHEASTERN SOUTH CHINA SEA

To confirm the existence of summer upwind flow in the northeastern of the South China Sea, the secular average wind field of July of 1939 - 1978 was used as summer wind field and Backhaus's 3-D baroclinic shelf circulation numerical model was used to numerically solve the flow fields in the northeastern South China Sea response to summer monsoon fields. The results indicated that even in mid-summer, Kuroshio Water still flows through the Bashi Strait into the SCS (KWFTBSS). The prevailing interaction between summer wind stress and continental slope topography results in divergence and ascent of seawater, low elevation and a cold seawater belt whose northern side has summer upwind flow west of 116.0°E. East of 116.0°E. KWFTBSS prevails, surface layer seawater converges and downwells to form high elevation warm water belts, and to generate northeastward current in the continental slope at the northern side.

The conclusion in present paper is that there is summer upwind flow west of 116.0° E in the northeastern South China Sea during the summer monsoon.