东海沿岸潮致上升流的数值模拟  

NUMERICAL MODELLING OF TIDE INDUCED UPWELLING IN COASTAL AREAS OF THE EAST CHINA SEA

作　　者：黄祖珂[1] 俞光耀[1] 罗义勇[1] 娄安刚[1] 杜勇[1] 

机构地区：[1]青岛海洋大学海洋环境学院

出　　处：《青岛海洋大学学报（自然科学版）》1996年第4期405-412,共8页Journal of Ocean University of Qingdao

基　　金：国家重点自然科学基金

摘　　要：卫星照片显示东海沿岸存在一条狭长的低温水带，这是上升流将外海深层低温海水带到近岸表层所造成的现象。本文从潮汐因素探讨上升流产生的原因。对东海沿岸海域Ｍ２分潮进行三维潮流数值计算，得出的各层水平余流和垂直余流表明，由于潮汐非线性效应和海底地形的影响，能够在中国东海沿岸产生一条狭长的上升流带。此结果与卫星照片显示的海面低温水域的范围基本一致。此外还计算了在不同风速、风向作用下产生的风生上升流。The M 2 constituent in the coastal areas of the East China Sea is computed based on the three dimensional nonlinear tidal wave equations. The distribution of the level tidal residual currents and the vertical tidal residual currents of nine layers indicates that the upwelling in the coastal areas of the East China Sea can be induced by the influence of tidal nonlinear effect and the sea bottom topography. There is a good agreement between the region of computed upwelling and the region of lower sea surface water temperature obtained by satellite photograph. The computed largest velocity of upwelling, 0.6×10 -3 cm/s,appears off the north of Fujian and off Zhoushan Islands.

关 键 词：东海 上升流 数值模拟 潮汐 

分 类 号：P731.23[天文地球—海洋科学]