摘要: |
采用有限元法建立了一个适用于福建沿岸的天文潮风暴潮耦合预报模式(FETSCM),模式采用三角网格,在福建沿岸平均网格分辨率为1 km,最高500 m.利用福建沿岸6个潮位站的实测资料对模型进行了验证,天文潮模拟结果与实测吻合良好,5个站位平均绝对误差为22 cm;31场历史台风期间6个站位风暴潮后报模拟误差为24 cm;天文潮风暴潮耦合总水位的平均极值误差为20 cm,表明该耦合预报模式对福建沿岸的台风灾害预警有较好实用价值. |
关键词: 物理海洋学 有限元 天文潮 风暴潮耦合模式 数值计算 福建沿岸 |
DOI:10.3969/J.ISSN.2095-4972.2016.02.015 |
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基金项目:国家科技支撑计划资助项目(2013BAB04B01) |
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A tide-storm surge coupled model based on finite element method for Fujian coast |
ZHANG Li,SHANG Shaoping,XIE Yanshuang,ZHANG Feng |
(Key Laboratory of Underwater Acoustic Communication and Marine Information Technology(Xiamen University), Ministry of Education, Xiamen 361005, China;College of Ocean & Earth Sciences, Xiamen University, Xiamen 361005, China;Center for Ocean observation Technologies,Xiamen University, Xiamen 361005, China) |
Abstract: |
A 2 dimension tide-storm surge coupled numerical model based on finite element method (FETSCM) was established for Fujian coast. The mesh resolution along Fujian coast was 1 km by average with the finest mesh resolution of 500 m. The model was used to simulate the tide and storm surge. Comparing to the records at 6 tidal gauges along Fujian coast, the mean absolute error of tide simulation is 22 cm; the root mean square error of storm surge is 24 cm; the absolute error of max water level of tide and storm surge coupled water level was 20 cm. The results indicated that this tide-storm surge coupled model is useful for the storm disaster warning of Fujian coast. |
Key words: physical oceanography finite element method tide-storm surge coupled model numeric simulation Fujian coast |