Estimation of JONSWAP spectral parameters by using dependent-variables analysis

Li Hung Tsai, I. Fan Tseng, Hwa Chien, Chia Chuen Kao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Accurate estimation of JONSWAP parameters provides essential information for initial planning and design of coastal and ocean structure, as well as for later design modification or alternatives that could bear on either mitigation or environmental changes or enhancement of other aspects of the environment. Based on the demand of reliable field wave measurement, an oceanography observation network, which consists of 6 buoy stations around Taiwan. In present study, it is the purpose to obtain the JONSWAP parameters from the observation stations. It is found that different parameter sets might give similar spectral shapes due to the fact that there is high dependency between parameters α and γ. On the other hand, various values of the parameters will be obtained depending on different data fitting procedures. The differences of the parameter values range up to 15%, which should not be neglected. At last, the γ of the winter monsoon waves is from 1.44 to 1.69 in the western coast, and 2.09 to 2.66 in the eastern coast.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Ocean Wave Measurement and Analysis
PublisherASCE - American Society of Civil Engineers
Pages328-337
Number of pages10
ISBN (Print)0784406049, 9780784406045
StatePublished - 2001
EventProceedings of the Fourth International Symposium Waves 2001 - San Francisco, CA, United States
Duration: 2 Sep 20016 Sep 2001

Publication series

NameProceedings of the International Symposium on Ocean Wave Measurement and Analysis
Volume1

Conference

ConferenceProceedings of the Fourth International Symposium Waves 2001
Country/TerritoryUnited States
CitySan Francisco, CA
Period2/09/016/09/01

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