| YU Huaming,WANG Zhaohua,KUANG Liang,WANG Lu,BAO Xianwen,WU He,WANG Xin,DENG Xiaodong. 2015. A numerical study on the circulation and tide in a zigzag bay. Acta Oceanologica Sinica, 34(1):119－128 |
| A numerical study on the circulation and tide in a zigzag bay |
| 曲折海湾中潮汐和环流的数值研究 |
| Received:January 21, 2014 Revised:May 23, 2014 |
| DOI：10.1007/s13131-015-0604-0 |
| Key words:FVCOM Shacheng Bay circulation dye diffusion |
| 中文关键词: FVCOM 沙埕港 环流 水交换 |
| 基金项目:The National Marine Renewable Energy Programs of China under contract Nos GHME2011ZC03, GHME2011Gd01, GHME2012ZC02, GHME2012ZC03, GHME2012ZC05 and GHME2013ZC01; the National Natural Science Foundation of China under contract No. 41406011; the doctoral Fund of Ministry of Education of China under contract No. 20120132120016; the Shandong Province Natural Science Foundation of China under contract No. ZR2012dQ008; the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XdA11010201; the Open Laboratory Fund of North China Sea Branch of State Oceanic Administration under contract No. 2012012; the Fundamental Research Funds for the Central Universities under contract No. 201262004; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201305030. |
| Author Name | Affiliation | E-mail | | YU Huaming | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China
Physical Oceanography Laboratory of the Ministry of Education, Ocean University of China, Qingdao 266100, China | | | WANG Zhaohua | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China | | | KUANG Liang | Environmental Resource Management, Inc., PA 19406, USA | | | WANG Lu | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China
Physical Oceanography Laboratory of the Ministry of Education, Ocean University of China, Qingdao 266100, China | | | BAO Xianwen | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China | xwbao@ouc.edu.cn | | WU He | National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China | | | WANG Xin | National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China | | | DENG Xiaodong | East China Sea Marine Forecasting Center, East China Sea Branch, State Oceanic Administration, Shanghai 200081, China | |
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| Abstract: |
| The Shacheng Bay (SCB) is one of the most complex coastal bays in southeast China and due to the fact of complicated geometry and dynamic coastal processes, it is considered as a challenging area for the numerical simulation of its hydrodynamic characteristics. The most advanced finite volume ocean model, finite- volume coastal ocean model (FVCOM), has adopted to simulate this hydrodynamic system, where tidal currents, tidal residual current and dye diffusion processes were studied and analyzed quantitatively. The validation of this numerical model matches well with various observation data, including elevation and current data. The misfit of a tidal elevation has a relative standard error of 3.66% and 4.67% for M2 and S2 tide components. The current validation shows a good match with an average error of 10 cm/s and 8° in the speed major axis and its direction respectively between the simulation and the measurement. This proves the robustness and reliability of this model. It is also found that the cape effect is significant and important in this system. The dye diffusion simulations show a 53 d flushing period for the whole inner bay waterbody. The results are of its first kind for understanding the hydrodynamic system in the SCB and they can provide helpful and trustful scientific information for others. |
| 中文摘要: |
| 沙埕港是中国东南沿海最复杂的海湾之一, 基于其复杂的地形及水动力过程, 在水动力特征模拟方面极具挑战性. 本文采用最为先进的有限体积海岸海洋模型(FVCOM)来模拟此海区的水动力系统, 对其潮流、潮致余流和水交换过程进行了定量分析. 模型模拟得到的水位和流速均与实测数据具有良好的一致性, 其中, M2分潮与S2分潮振幅的标准差分别为3.66%和4.67%, 最大潮流流速与流向的平均误差分别为10 cm/s和8°. 误差均在允许范围之内, 说明模型是稳定可靠的. 结果显示, 岬角效应对本海区的水动力系统有重大的影响. 水交换过程的模拟表明整个海湾的水交换周期为53天. 本文可反映沙埕港海域的水动力过程, 并为其他研究学者提供可靠有效的科研信息. |
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