| 大亚湾水交换的数值模拟研究 |
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| 引用本文： | WANG Cong,林军,CHEN Pimao,章守宇.大亚湾水交换的数值模拟研究[J].南方水产,2008,4(4):8-15. |
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| 作者姓名： | WANG Cong 林军 CHEN Pimao 章守宇 |
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| 作者单位： | 1. 上海海洋大学海洋学院,上海,200090;华东师范大学河口海岸国家重点实验室,上海,200062
2. 上海海洋大学海洋学院,上海,200090 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，上海市教委资助项目，国家自然科学基金，农业部渔业生态环境重点开放实验室开放基金项目 |
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| 摘 要： | 对大亚湾的潮流场进行三维数值模拟，分别用Lagrange质点追踪法和保守物质输运扩散2种方法研究大亚湾的水交换能力，并把大亚湾分成7个子区域，计算整个海湾和各子区域的水体平均存留时间和更新时间，比较各子区域的水交换能力的大小，分析2种方法结果差异产生的原因。大亚湾的水交换能力受潮致余流流场结构支配。质点追踪模拟结果显示，大亚湾南部及大鹏澳区域质点迁移出海湾的速度较快，哑铃湾、大亚湾北部及范和港区域较慢；保守物质输运扩散模型计算结果显示，大亚湾东南部水体的更新时间最快，水交换能力最强，其次分别为大亚湾中东部、西南部、范和港、大亚湾北部、大鹏澳、哑铃湾。
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| 关 键 词： | 大亚湾 水交换 Lagrange质点追踪 保守物质输运扩散 |
Numerical simulation on water exchange in Daya Bay |
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| WANG Cong,LIN Jun,CHEN Pimao,ZHANG Shouyu.Numerical simulation on water exchange in Daya Bay[J].South China Fisheries Science,2008,4(4):8-15. |
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| Authors: | WANG Cong LIN Jun CHEN Pimao ZHANG Shouyu |
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| Institution: | WANG Cong, LIN Jun, CHEN Pimao, ZHANG Shouyu ( 1. College of Marine Science and Technology, Shanghai Ocean University, Shanghai 200090, China ; 2. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; 3. State Key Lab. of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China) |
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| Abstract: | The tide and currents in Daya Bay was simulated by a 3D numerical estuarine and coastal ocean model. Lagrangian particle tracking and matter transportation and diffusion were applied in water exchange study. Daya Bay was divided into seven parts to calculate the averaged water residence time and refresh time in the whole bay as well as in each part. The structure of the tidal residual currents, as well as landform and depth play decisive roles in water exchange in Daya Bay. The result showed that the discharge of particles was faster in south of Daya Bay and Dapeng＇ao and slower in Yalin gulf, north of Daya Bay and Fanhe gulf as indicated by lagrangian particle tracking. Water refresh time was shorter in southeast of Daya Bay than in middle east, southwest of Daya Bay, Fanhe gulf, north of Daya Bay, Dapeng＇ao and Yalin gulf. |
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| Keywords: | Daya Bay Water exchange Lagrangian particle tracking Passive tracer adveetion and diffusion |
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