| 摘要: |
| 为研究江苏近海海域风暴潮的特性以及为该海域风暴潮增水变化机理及后报做铺垫, 本文基于FVCOM(Finite Volume Coast and Ocean Model)海洋模式和Jelesnianski圆形台风风场模型, 建立了江苏近海风暴潮数值模型, 并对江苏近海的天文潮以及1109号台风和1210号台风引起的风暴潮进行模拟。结合验潮站水位观测, 研究了连云港站和吕泗站的天文潮和风暴潮增水过程。我们将风暴潮与天文潮非线性作用下的风暴潮增水和纯风暴潮增水过程进行对比, 讨论了天文潮与1109号和1210号台风风暴潮之间的非线性作用引起的增水特征。结果均表明, 在天文潮高潮时, 天文潮和风暴潮之间的非线性作用可以抑制增水, 在天文潮低潮时, 天文潮和风暴潮之间的非线性作用有利于增水。除了气象因子以及天文潮和风暴潮之间的非线性作用外, 该海区的地理环境也对台风风暴潮增水产生影响。因此对江苏近海的海岸线变化和浅滩地形变化进行敏感性试验, 结果表明, 本文所设计的海岸线变化对该海域的风暴潮增水影响较小, 江苏沿海岸线的向外推移使得江苏海域风暴潮的增水略微上涨, 而本文所设计的地形的变化对风暴潮增水影响较大。 |
| 关键词: 江苏近海 非线性作用 风暴潮增水 浅滩地形 |
| DOI：10.11759/hykx20171013001 |
| 分类号: |
| 基金项目:国家重点研发计划(2016YFC1402404, 2017YFC1404201);国家自然科学基金项目委员会-山东省人民政府联合资助海洋科学研究中心项目(U1606405) |
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| Numerical simulation and analysis of storm surge in the nearshore of Jiangsu Province |
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HE Shun-zhi,WANG Xin-yi,XU Teng-fei,WANG Yi-hang,WANG Yong-gang
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| Abstract: |
| This study establishes a numerical model of storm surge by using the FVCOM and the Jelesnianski circular typhoon wind field model. The storm surge processes of Lianyungang station and Lvsi station were obtained and this research discusses the characteristics of storm surge. The results show that the nonlinear interaction between astronomical tide and storm tide can suppress the storm surge and help the growth of the storm surge at the climax of the astronomical tide and the ebb of astronomical tide, respectively. The geographical environment of the sea area was also an important influence factor of the storm surge. Therefore, sensitivity experiments were performed to determine the coastal change of Jiangsu Province and the topography change of the shoal area of Jiangsu Province. The results also showed that the coastal change of Jiangsu Province had a small effect on the storm surge. When the coastline went toward open sea, the typhoon storm surge slightly increased, and the results showed that the topography change of the sea area of Jiangsu Province had a great effect on storm surge. |
| Key words: the coast of Jiangsu Province nonlinear interaction storm surge shoal area |
