合成风场作用下的近海重现期波要素分析-海洋预报

合成风场作用下的近海重现期波要素分析

单位：河海大学港口海岸及近海工程学院海岸灾害与防护教育部重点实验室, 江苏南京 210098

分类号：P731.22

出版年·卷·期（页码）：2016·33·第五期（41-47）

摘要：

运用第三代海浪模式SWAN，分别将台风模型风场、美国NCEP风场、合成风场作为其驱动风场，与实测值比较发现：合成风场优于另外两种风场，在台风中心和远离台风中心地带模拟效果都较好。故选用合成风场作为驱动风场，对1982-2015年间影响东南沿海的210个台风过程进行数值模拟推算，进行P-Ⅲ曲线拟合分析，与测站实测资料符合良好。在此基础上，分方向绘制出东南沿海的百年一遇的波高分布图，可为近海工程环境评估和设计提供参考。

Driven by typhoon model wind field, American NCEP (National Centers for Environmental Prediction) wind field and combined wind field, respectively, the wave simulation results based on the third-generation wave model SWAN (Simulating Waves Nearshore) are compared with field data. The results show that combined wind field is better than the other two wind fields, which has good simulation both in and away from the typhoon center. The combined wind field is chosen to drive the model, which stimulates 210 typhoons in southeast coast from 1982 to 2015. The numerical simulation results are used to plot P-Ⅲ curves, and they are in good agreement with field data. On this basis, once-in-100-year wave height distribution maps are plotted in different directions, which could provide a reference for offshore project environmental assessment and design.

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