论文部分内容阅读
为使超定量洪水的应用更方便有效,将适线法应用于洪水超定量系列频率分析中。以长江宜昌站日平均流量为例,利用独立性判别标准以确保超定量系列的独立性,选取合适的门限值形成洪水超定量系列。采用GP分布描述洪水超定量系列,利用适线法进行频率分析。结果表明,超定量洪水可扩大已有观测资料的信息使用量,且传统的适线法在基于GP分布的洪水超定量系列中应用效果良好。
In order to make the application of overdimension flood more convenient and effective, the method of suitable line is applied to the over-quantification series of frequency analysis of flood. Taking the daily average flow in Yichang station of Yangtze River as an example, the criterion of independence is used to ensure the independence of over-quantified series. A suitable threshold value is selected to form a series of flood quantification. The GP distribution is used to describe the over-quantitative series of floods and the frequency analysis is performed using the method of fitting line. The results show that the over-quantitative flood can expand the information usage of the existing observation data, and the traditional fit-in method works well in the over-quantitative flood series based on GP distribution.