Distribution selection for hydrologic frequency analysis using subsampling method

International Conference on Water Resource and Environment 2016

地球科学;生态环境科学

Das, S.^1

College of Hydrometeorology, Nanjing University of Information Science and Technology (NUIST), Nanjing, China^1

关键词: Frequency Analysis;    Goodness-of-fit test;    Hydrologic frequency analysis;    Original sample;    Potential utility;    Resampling technique;    Sub-sampling methods;    Subsampling techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/39/1/012059/pdf
DOI  :  10.1088/1755-1315/39/1/012059

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper investigates the potential utility of subsampling, a resampling technique with the aid of a goodness of fit test to select the best distribution for frequency analysis. Subsampling draws samples (of smaller size) from the original sample without replacement. The performance of the methodology is assessed by applying the methodology to an observed annual maximum (AM) hydrologic data series. Several AM discharge series of different record lengths are used as case studies to determine the performance. Overall, it is found that the methodology is suitable for a longer data series and a good performance can be obtained when the subsample size is around half of the underlying data sample. The methodology has also outperformed the standard AD test in terms of effectively discriminating between distributions. All results indicate that the subsampling technique can be a promising tool in discriminating between distributions.