东中国海潮能通量与耗散的数值模拟分析

Numerical modeling study of tidal energy and dissipation in the East China Seas

基于区域海洋模式系统,通过对东中国海的三维数值模拟计算潮能通量和耗散.结果显示:传入东海、黄海、渤海的净潮能分别约为88.333,96.082和2.152 GW,其潮能耗散分别约为79.168,95.254和1.790 GW;底摩擦耗散和垂向扩散耗散分别占总耗散的67.1%和32.9%,水平扩散耗散量级较小,可忽略不计;东中国海高潮能耗散区主要分布于朝鲜半岛沿岸、江苏北部浅滩、长江口水下三角洲、杭州湾和浙闽沿岸;渤海中部、北黄海西南部、南黄海中部为低潮能耗散区.

Based on the regional ocean modeling system(ROMS),a three-dimensional numerical model of the East China Seas was developed to compute tidal energy and dissipation.The results showed that the net tidal energy flux of the East China Sea,the Yellow Sea and the Bohai Sea were about 88.333,96.082,2.152 GW respectively,and the tidal energy dissipation were about 79.168,95.254,1.790 GW respectively.The bottom friction dissipation and vertical diffusion dissipation accounted for 67.1%and 32.9%of the total dissipation,and the horizontal diffusion dissipation was so small that it could be ignored.The high tidal energy dissipation areas of the East China Seas were mainly distributed around the coast of the Korean Peninsula,the shoals of north Jiangsu Province,the Yangtze River subaqueous delta,the Hangzhou Bay and the coast of Zhejiang and Fujian Provinces.The low tidal energy dissipation areas were located in the middle of the Bohai Sea,the southwest of northern Yellow Sea,and the middle of southern Yellow Sea.