夏季南黄海风漂流的不同计算方法的对比分析  

Different methods for computation of wind-induced currents in southern Yellow Sea in summer

作　　者：梁兼霞[1] 庞重光[1] 白学志[1] 

机构地区：[1]中国科学院海洋研究所

出　　处：《海洋科学》2005年第9期60-64,75,共6页Marine Sciences

基　　金：国家自然科学基金项目(40406025);国家重点基础研究发展规划项目(G1999043803)

摘　　要：分别用Ekman有限深海风漂流计算公式,普林斯顿海洋模式(POM)数值计算了南黄海风漂流。通过对这两种方法的计算结果的时比分析得出:在水深较小时,模式计算的风漂流场与公式计算结果较为接近;而在水深较大时公式计算所得风漂流场与实际流场相差较大,模式计算的风漂流场则基本再现了夏季南黄海的环流结构;风速越大,两种计算方法所得的流场之间的差别越大。同时从数值试验的角度还得到夏季由于风速普遍偏小,风场对环流结构的影响都相对较小,热盐效应是控制夏季环流的主导因素。但当风速增大到一定程度时,环流结构会发生根本改变。Wind-induced currents in southern Yellow Sea in summer were computed by Ekman formula and Princeton Ocean Model（POM）. The main results shows that in shallow sea, the wind-induced currents simulated in POM model are similar to that computed by Ekman formula; in deep sea, the resuIts computed by Ekman formula is biased from the truth, while which computed by POM model shows in overall actual circulation pattern in southern Yellow Sea in summer. The faster the wind, the more obvious the difference between two methods. Furthermore, since the wind is generally weak in summer, it has little influence on circulation pattern, thus thermohaline become the dominant factor controlling circulations in summer. However, the circulation pattern will be totally different if the Wind is fast enough.

关 键 词：黄海冷水团 普林斯顿海洋模式(POM) 风漂流 热盐环流 

分 类 号：P714.3[天文地球—海洋科学] P731.21