A new method for determining threshold in using PGCEVD to calculate return values of typhoon wave height

Autor:	Yao Luo, Jin-peng Hu, Liang-sheng Zhu
Rok vydání:	2012
Předmět:	Hydrology Renewable Energy Sustainability and the Environment Mechanical Engineering Ocean Engineering Oceanography Distribution (mathematics) Typhoon Statistics Wave height Generalized extreme value distribution Point (geometry) Selection (genetic algorithm) Mathematics Extreme wave height
Zdroj:	China Ocean Engineering. 26:251-260
ISSN:	2191-8945 0890-5487
DOI:	10.1007/s13344-012-0019-z
Popis:	In using the PGCEVD (Poisson-Gumbel Compound Extreme Value Distribution) model to calculate return values of typhoon wave height, the quantitative selection of the threshold has blocked its application. By analyzing the principle of the threshold selection of PGCEVD model and in combination of the change point statistical methods, this paper proposes a new method for quantitative calculation of the threshold in PGCEVD model. Eleven samples from five engineering points in several coastal waters of Guangdong and Hainan, China, are calculated and analyzed by using PGCEVD model and the traditional Pearson type III distribution (P-III) model, respectively. By comparing the results of the two models, it is shown that the new method of selecting the optimal threshold is feasible. PGCEVD model has more stable results than that of P-III model and can be used for the return wave height in every direction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67bd436a286b8ccb6b7e1875f0d7c717 https://doi.org/10.1007/s13344-012-0019-z Zobrazit plný text záznamu Full text from SpringerLink