舟山海域风暴潮特征及数值模拟研究

doi:10.3969/j.issn.1001-909X.2015.03.002

海洋学研究 ›› 2015, Vol. 33 ›› Issue (3): 7-16.DOI: 10.3969/j.issn.1001-909X.2015.03.002

舟山海域风暴潮特征及数值模拟研究

杨昀^1,2, 王惠群^1,2, 管卫兵^*1,2,3, 曹振轶^1,2, 陈琪^1,2

1.卫星海洋环境动力学国家重点实验室,浙江杭州 310012;
2.国家海洋局第二海洋研究所,浙江杭州 310012;
3.浙江大学海洋科学与工程学系,浙江杭州 310058

收稿日期:2015-04-10 修回日期:2015-05-04 出版日期:2015-09-15 发布日期:2022-11-28
通讯作者: *管卫兵(1968-),男,研究员,主要从事海洋动力学方面的研究。E-mail:gwb@sio.org.cn
作者简介:杨昀(1989-),女,浙江湖州市人,主要从事海洋环境数值模拟方面的研究。E-mail:yuriyy@126.com
基金资助:
中国科学院战略性先导科技专项专题资助(XDA1102030404);国家自然科学基金项目资助(41276083);国家海洋公益性行业科研专项经费项目资助(2013418009);“全球变化与海气相互作用”专项资助(GASI-IPOVAI-04)

Study on characteristics and numerical simulation of storm surge around the Zhoushan Island

YANG Yun^1,2, WANG Hui-qun^1,2, GUAN Wei-bing^*1,2,3, CAO Zhen-yi^1,2, CHEN Qi^1,2

1. State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China;
2. The Second Institute of Oceanography,SOA, Hangzhou 310012, China;
3. Department of Ocean Science and Engineering, Zhejiang University, Hangzhou 310058, China

Received:2015-04-10 Revised:2015-05-04 Online:2015-09-15 Published:2022-11-28

摘要/Abstract

摘要： 选择20个对舟山海域有较大影响的历史台风案例,开展定海站实测潮位数据的分析与归纳,总结得出20个台风中风暴潮过程增水最大值为5612号台风的207.1 cm,风暴潮高潮位最大值为9711号台风的283.7 cm。同时,在三维斜压水动力模型SELFE的基础上加入台风气压场和风场模块,建立了一个采用非结构三角形网格的天文潮-风暴潮耦合模型,模拟表明定海站的斜压效应较为明显,非线性耦合作用相对较弱,但两潮耦合风暴潮增水结果仍优于风暴潮单因子增水结果,与实际增水更为接近。在此基础上,以一定间隔在5612号台风原路径南北两侧各设计了2条平行路径,分别模拟两潮耦合风暴潮增水,结果表明5612号台风参数沿其原路径偏南1个最大风速半径距离的S1路径运动时可模拟得到定海站可能最大风暴潮增水为243.9 cm。最后,在S1路径下模拟可能最大风暴潮增水分别遭遇天文高、中、低潮位时的风暴潮高潮位,结果表明天文潮高潮时可得到可能最大风暴潮高潮位约为400 cm,天文中潮时次之,而天文低潮时风暴潮高潮位最低。

关键词: 风暴潮, 斜压, 非线性耦合, 可能最大风暴潮增水, 数值模型, 舟山

Abstract: Twenty historical typhoons which had a great impact on the Zhoushan sea area, were selected to perform analyses and inductions of the measured tidal level data at Dinghai station. It was found that in these twenty typhoons, the maximum storm surge was 207.1 cm under the Typhoon 5612, and the maximum storm high tidal level was 283.7 cm under the Typhoon 9711. Further, a 3D baroclinic hydrodynamics model, SELFE, was used to establish an unstructured triangular grid astronomical tide-storm surge coupled model, through adding the typhoon pressure field and wind field modules. The numerical results show that the baroclinic effect is more obvious while the nonlinear coupling is relatively weaker. But the two-tides-coupled storm surge data are still better than the single-factor data and closer to the measured data. On this basis, in the north and south of the original path of the Typhoon 5612, two parallel paths at certain intervals were designed respectively. The corresponding results show that the supposed typhoon which adopts the parameters of the Typhoon 5612 and moves along the S1 parallel path in the south of the original typhoon path at a distance interval of a maximum wind radius, can induce the probable maximum storm surge of approximately 243.9 cm. Finally, supposing that the probable maximum storm surge separately encounters the astronomical high, middle or low tidal level, it is found that there appears a probable maximum storm high tidal level of about 400 cm when encountering the astronomical high tide.

Key words: storm surge, baroclinic, nonlinear coupling, probable maximum storm surge, numerical model, Zhoushan Island

中图分类号:

P731.23

杨昀, 王惠群, 管卫兵, 曹振轶, 陈琪. 舟山海域风暴潮特征及数值模拟研究[J]. 海洋学研究, 2015, 33(3): 7-16.

YANG Yun, WANG Hui-qun, GUAN Wei-bing, CAO Zhen-yi, CHEN Qi. Study on characteristics and numerical simulation of storm surge around the Zhoushan Island[J]. Journal of Marine Sciences, 2015, 33(3): 7-16.

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舟山海域风暴潮特征及数值模拟研究

Study on characteristics and numerical simulation of storm surge around the Zhoushan Island

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