| 摘要: |
| 基于ROMS海洋数值模式, 对渤海、黄海、东海的潮汐、潮流进行数值模拟, 模拟结果与91个沿岸验潮站的实测结果拟合较好。研究表明, 渤、黄、东海内的潮波以半日潮为主, 共有4个半日潮、2个全日潮和1个退化的半日潮旋转潮波系统, 且都呈逆时针方向旋转; 渤海的半日潮流主要呈顺时针方向旋转, 全日潮流呈逆时针方向旋转, 黄海的潮流以逆时针旋转为主, 东海、朝鲜海峡潮流以顺时针旋转为主; 半日分潮流共有13个圆流点, K1(O1)分潮流有10(9)个圆流点, 但全日潮流的同潮时线分布较为复杂; 太平洋传入东海的4个主要分潮潮能通量分别为118.341GW、19.525GW、5.630GW、3.871GW, 一半以上的潮能耗散在南黄海, 30%—40%的潮能耗散在东海, 其次是北黄海, 而渤海最小。 |
| 关键词: 东海, 潮流, 潮能通量, 数值模拟, ROMS |
| DOI：10.11693/hyhz201203039039 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973)项目, 2011CB403600 号; 国家高技术研究发展计划(863)项目, 2007AA092003-01 号; 上海市科委科研项目, 08DZ1206304 号; 国家自然科学基金项目, 40531006 号, 41076011 号 |
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| NUMERICAL STUDY ON THE TIDAL CURRENTS, TIDAL ENERGY FLUXES AND DISSIPATION IN THE CHINA SEAS |
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ZHU Xue-Ming, LIU Gui-Mei
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Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center
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| Abstract: |
| Based on the Regional Ocean Modeling System (ROMS), a successful simulation for the tides and tidal currents has been done in the Bohai Sea, the Yellow Sea and the East China Sea (BYES). By comparing the model results with the observed data in 91 gauge stations, the numerical model results show agreement with the observation well. Model results indicate that semidiurnal tidal system is dominant in the BYES. Four semidiurnal, two diurnal independent and one degraded semidiurnal tide-amphidromic points are well simulated in the BYES, and they are all anti-clockwise. In the Bohai Sea, semidiurnal tidal currents is clockwise, but anti-clockwise for diurnal tidal currents. Both semidiurnal and diurnal tidal currents are anti-clockwise mainly in the Yellow Sea, but clockwise mainly occurs in the East China Sea and Korea Strait. Thirteen tidal current-amphidromic points for semidiurnal, ten for K1constituent and nine for O1constituent can be found in the area shallower than 200 meters of the BYES. The distribution of diurnal tidal currents is more complex than semi-diurnal. The tidal energy fluxes of the four major constituents transported from the Pacific to the East China Sea are 118.341GW, 19.525GW, 5.630GW, 3.871GW, respectively. The tidal energy is dissipated more than half in the Southern Yellow Sea, 30%—40% in the East China Sea, then a little less in the Northern Yellow Sea, and the least in the Bohai Sea. |
| Key words: Easte China Sea, Tides, Tidal current, Numerical simulation, ROMS |
