Statistical analysis on extreme wave height
Statistical analysis on extreme wave height
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极端波高统计分析
作者：
N. V. Teena;V. Sanil Kumar;K. Sudheesh;R. Sajeev
基于广义极值（GEV）分布和广义帕累托分布（GPD）的经典极值理论，应用于阿拉伯海东部一个地点31年的波浪后报资料的波高估计。讨论了阈值选择和模型验证等实际问题。具有不同重现期的波高估计值与从不同分布获得的估计值进行了比较。在比较GEV与年最大值方法和GPD与峰值超过阈值方法拟合的分布时，表明GEV和GPD模型在研究区域给出了相似或可比的波高，因为一年中没有多个风暴事件。还研究了季节性对不同重现期波高的影响。
The classical extreme value theory based on generalized extreme value (GEV) distribution and generalized Pareto distribution (GPD) is applied to the wave height estimate based on wave hindcast data covering a period of 31 years for a location in the eastern Arabian Sea. Practical concern such as the threshold selection and model validation is discussed. Estimates of wave height having different return periods are compared with estimates obtained from different distributions. On comparing the distributions fitted to the GEV with annual maximum approach and GPD with peaks over threshold approach have indicated that both GEV and GPD models gave similar or comparable wave height for the study area since there is no multiple storm event in a year. Influence of seasonality on wave height having different return period is also studied.