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An improved empirical equation for storm surge hydrographs in the Gulf of Mexico, U.S.A

机译：美国墨西哥湾风暴潮水文图的改进经验公式

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摘要

Traditional storm surge hydrograph equations are practically unable to fit well with the falling limb of the observed storm surge hydrograph. This study has investigated storm surge hydrographs induced by Categories 3 and 4 hurricanes at several NOAA coastal stations in the Gulf of Mexico. Five observed storm surge hydrographs for Category-3 hurricanes and four observed hydrographs for Category 4 hurricanes are chosen accordingly in the investigation. The observed storm surge hydrographs are obtained by subtracting tidal harmonic signals from the observed water level hydrographs. Comparisons of the average observations and the existing synthetic hydrograph show that the Categories 3 and 4 storm surge hydrographs do not follow the same trend. Existing synthetic empirical equations are found unable to fit well with the observed storm surge hydrographs. Due to the simple parameterization of the existing synthetic hydrograph equations, an improved empirical equation for general storm surge hydrograph is proposed in this study. Based on the observed data, a full set of parameters of the proposed equation for Categories 3 and 4 hurricanes is estimated. The improved empirical equation fits well with the observations of the storm surge hydrographs on both rising and falling limbs.
机译：传统的风暴潮水文图方程实际上无法很好地与观测到的风暴潮水文图的下降边缘拟合。这项研究调查了墨西哥湾多个NOAA沿海站点由3级和4级飓风引起的风暴潮水位图。在调查中，相应地选择了5个类别3飓风的观测浪涌水位图和4个类别4飓风的观测水位图。观测到的风暴潮水位图是通过从观测到的水位水位图中减去潮汐谐波信号而获得的。平均观测值与现有合成水文图的比较表明，类别3和4风暴潮水文图没有遵循相同的趋势。发现现有的综合经验方程无法很好地与观测到的风暴潮水文图拟合。由于现有合成水文方程的简单参数化，提出了一种改进的一般风暴潮水文经验公式。基于观察到的数据，估计了针对第3类和第4类飓风的拟议方程式的全套参数。改进的经验方程与上升和下降两边的风暴潮水文图的观测值非常吻合。

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  • 来源
    《Ocean Engineering》 |2014年第1期|174-179|共6页
  • 作者

    Sudong Xu; Wenrui Huang;

  • 作者单位

    Department of Harbor, Waterway and Coastal Engineering, School of Transportation, Southeast University, Nanjing 210096, China;

    Key Lab of Yangtze River Water Environment of Ministry of Education, Department of Hydraulic Engineering, Tongji University, Shanghai, China,Department of Civil and Environmental Engineering, Florida State University, Tallahassee, FL 32310, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Storm surge; Hydrograph; Harmonic analysis; Gulf of Mexico; Hurricane;

    机译：风暴潮;水文谐波分析;墨西哥湾;飓风;

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