| Issue |
E3S Web Conf.
Volume 314, 2021
The 6th edition of the International Conference on GIS and Applied Computing for Water Resources (WMAD21)
|
|
|---|---|---|
| Article Number | 04002 | |
| Number of page(s) | 6 | |
| Section | Geomatics, Remote Sensing and Modelling | |
| DOI | https://doi.org/10.1051/e3sconf/202131404002 | |
| Published online | 26 October 2021 | |
The problem of determining the threshold for statistical analysis by the POT method: Application to wave data on the Moroccan Atlantic coast
Er-SHEMSS, Laboratory of Civil Engineering, Hydraulics, Environment and Climate, Hassania School of Public Works, Morocco
* Corresponding author: albakalihosny@gmail.com
In a study of extreme waves by the Peak Over Threshold (POT) method, the determination of the threshold of data censoring is an essential step. A wrong choice of the threshold can lead to erroneous results of the wave height design and consequently a bad design of maritime structures such as breakwaters for deep sea ports. In this study, we analyzed the influence of the threshold variation on the results of the hundred-year return period waves, generally considered for the design of maritime structures. The sensitivity study allowed us to confirm that the exponential model is the best probability distribution to describe wave data in two points on the Moroccan Atlantic coast for the wave data period from 1958 to 2019. This study also confirmed that a wrong choice of the statistical distribution and a wrong choice of the threshold lead to significant errors in the estimation of design wave height.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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