A study on the optimal equation of the continuous wave spectrum

Waves can be expressed in terms of a spectrum; that is, the energy density distribution of a representative wave can be determined using statistical analysis. The JONSWAP, PM and BM spectra have been widely used for the specific target wave data set during storms. In this case, the extracted wave da...

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Bibliographic Details
Published in:International journal of naval architecture and ocean engineering 2015, 7(6), , pp.1056-1063
Main Authors: Cho, Hong-Yeon, Kweon, Hyuck-Min, Jeong, Weon-Mu
Format: Article
Language:English
Subjects:
Continuous wave spectrum
Deep water
GEV function
JONSWAP spectrum
Shallow water
Storm
조선공학
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Summary:Waves can be expressed in terms of a spectrum; that is, the energy density distribution of a representative wave can be determined using statistical analysis. The JONSWAP, PM and BM spectra have been widely used for the specific target wave data set during storms. In this case, the extracted wave data are usually discontinuous and independent and cover a very short period of the total data-recording period. Previous studies on the continuous wave spectrum have focused on wave deformation in shallow water conditions and cannot be generalized for deep water conditions. In this study, the Generalized Extreme Value (GEV) function is proposed as a more-optimal function for the fitting of the con-tinuous wave spectral shape based on long-term monitored point wave data in deep waters. The GEV function was found to be able to accurately reproduce the wave spectral shape, except for discontinuous waves of greater than 4m in height.
ISSN:2092-6782
2092-6790
DOI:10.1515/ijnaoe-2015-0074