Modeling Peaks Over A Threshold Using R (Case Wadis Soubella, Algeria)

Abstract

Floods are complex, natural hazards that, to varying degree, affect some parts of the world every year. The objective of this study is to Modeling Peaks Over a Threshold of El-Ham Basin River Using R. The free software environment for statistical computing and graphics has been developed and it is maintained by statistical programmers, with the support of an increasing community of users with many different backgrounds, which allows access to both well-established and experimental techniques. In This work R and some of its packages are presented powerful tools to explore and extract patterns from raw information, to pre-process input data of hydrological models, and post-processing its results. The Generalized Pareto Distribution (GPD) is the limiting distribution of normalized excesses over a threshold, as the threshold approaches the endpoint of the variable. The POT package contains useful tools to perform statistical analysis for peaks over a threshold using the GPD approximation.