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http://dx.doi.org/10.9765/KSCOE.2020.32.5.363

Parameter Estimation and Fitting Error Analysis of the Representative Spectrums using the Wave Spectrum off the Namhangjin, East Sea  

Cho, Hong Yeon (Marine Bigdata Center, Korea Institute of Ocean Science and Technology, University of Science and Technology)
Jeong, Weon Mu (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
Oh, Sang-Ho (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology)
Baek, Won Dae (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.32, no.5, 2020 , pp. 363-371 More about this Journal
Abstract
The parameters of the modified BM and JONSWAP spectra are estimated using spectral data set off Namhangjin, located in the east coast of Korea, collected during high wave events. The parameters of the modified BM spectrum were estimated to be 1.04 and 0.27, which were similar to the conventional values of 1.098 and 0.30, but showed significant differences in statistical terms. On the other hand, the peak enhancement factor of JONSWAP spectrum was estimated to be 1.4, which was substantially small compared to the conventional value of 3.3. The RMSE differences from the fitted results of the two spectra were small, approximately 0.2. In the frequency range greater than the peak frequency, however, the spectral energy density showed relatively mild decrease with increase of the frequency, compared to the standard forms of the modified BM and JONSWAP spectra.
Keywords
modified BM spectrum; JONSWAP spectrum; parameter estimation; peak enhancement factor; wave measurement;
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Times Cited By KSCI : 9  (Citation Analysis)
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