南海东北部夏季逆风流数值模拟  

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

作　　者：袁叔尧[1] 邓九仔[1] 

机构地区：[1]中国科学院南海海洋研究所,广州510301

出　　处：《海洋与湖沼》1997年第2期192-197,共6页Oceanologia Et Limnologia Sinica

基　　金："八五"国家重点科技专项基金!85-927-07-05

摘　　要：以1939—1978年的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士海峡流入南海；风应力与陆坡地形相互作用的影响，在116°E以西陆坡上占优势，形成辐散上升，生成低水位带及冷水带，其北侧生成夏季逆风流；116°E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（即夏季南海暖流）。To confirm the ekistence of summer upwind flow in the northeastem of theSouth China Sea, the secular averege wind fleld of July of 1939-1978 was used assummer wind field and Backhaus's 3 -D baroclinic shelf circulation numerical model wasused to numtrically solve the flow fields in the northeastern South China Sea response tosummer monsoon fields. The results indicated that even in mid-summer, Kuroshio Waterstill flows through the Bashi Strait into the SCS (KWFTBSS). The prevailing interactionbetween summer wind stress and continental slope topography results in diVergenee and ascent of seawater, low elevation and a cold seawater belt whose northem side has summerupwind flow west of 116.0°E。 East of 116.0°E, KWFTBSS prevails, surfare layerseawater converges and downwells to form high elevation warm water belts, and to generate northeastward current in the continental slope at the northem side.The conclusion in present paper is that there is summer upwind flow west of116.0°E in the northeastem South China Sea during the summer monsoon.

关 键 词：季风 风应力 逆风流 数值模拟 南海 海流 

分 类 号：P731.21[天文地球—海洋科学]