SPATIAL ASSESSMENT OF EXTREME SIGNIFICANT WAVES HEIGHTS IN THE GULF OF LIONS

Proceedings of the International Conference on Coastal Engineering

Anne Laurent⁵  Frederic Bouchette⁶  Romain Chailan¹  Gwladys Toulemonde⁴  Florence Sevault²  Heloïse Michaud³ 

[1] University Montpellier 2;CNRM-GAME, Meteo France / CNRS;SHOM;I3M - University Montpellier 2 / CNRS;LIRMM - University Montpellier 2 / CNRS;Geosciences - University Montpellier 2

关键词: extreme waves hazards;    extreme value analysis;    max-stable processes;    spatial extreme modelling;    spatial dependence;    wave hindcast;    Gulf of Lions;   

DOI  :  10.9753/icce.v34.management.17

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

In the analysis of coastal hazards, the features of extreme waves are determining information to question the impact of storms to the coast. The spatial behaviour of extreme waves is even more valuable especially since it is sparsely provided. Regarding recent applications in other contexts, a kind of statistical models called max-stable processes is relevant for modelling spatial extreme events. Max-stable processes are extensions of the well-known Generalised Extreme Value (GEV) distribution. Unlike univariate approaches, max-stable processes consider spatial dependence of a phenomenon. Such a modelling also overtakes a standard multivariate approach by providing information continuously over the area studied, even where no observation is available. Relying on such a stochastic modelling, the aim of this study is to discuss the extreme waves hazards in the Gulf of Lions, focusing on their spatial behaviour.

【 授权许可】

Unknown