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本文首先利用高精度海面风场,基于潍坊近岸的水深地形数据,运行SWAN海浪模式得到了-15m等深线3个特征点的波浪参数,利用P-Ⅲ型极值分布推算得到了潍坊外海点不同方位波浪要素的重现期;分析了潍坊近海平均的4个季节的有效波高、波向及平均周期的分布特征。基于ADCIRC水动力模式,对1994-2013年连续20年的风暴过程进行模拟分析,得到每个风暴过程最大水位以及最大风暴增水,并分别用GUMBEL方法和P-III方法推算了不同重现期的水位和风暴增水。本文可以为潍坊沿海波浪和风暴潮特征研究提供参考,为海洋工程建设以及海岸建筑设计等提供科学依据。
In this paper, the wave parameters of three characteristic points -15m isobath are obtained by using the SWAN ocean wave model based on the data of deep-sea topography in the coastal area of Weifang at high accuracy. Based on P-Ⅲ extreme value distribution, The recurrence period of wave elements in different directions was analyzed. The distribution characteristics of effective wave height, wave direction and average period in the four seasons of Weifang offshore were analyzed. Based on the ADCIRC hydrodynamic model, the storms of 20 consecutive years from 1994 to 2013 were simulated and analyzed. The maximum water level and the maximum storm water surge during each storms were obtained. The different recovery periods were estimated by GUMBEL method and P-III method respectively The water level and storm water. This paper can provide a reference for the study of waves and storm surges along the coast of Weifang, and provide a scientific basis for the construction of marine engineering and the design of coastal structures.