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

Title
Parameter Estimation and Fitting Error Analysis of the Representative Spectrums using the Wave Spectrum off the Namhangjin, East Sea
Author(s)
Cho, Hong Yeon; Jeong, Weon Mu; Oh, Sang Ho; Baek, Won Dae
KIOST Author(s)
Cho, Hong Yeon(조홍연)Jeong, Weon Mu(정원무)Baek, Won Dae(백원대)
Publication Year
2020-10
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.
ISSN
1976-8192
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/37572
DOI
10.9765/kscoe.2020.32.5.363
Bibliographic Citation
한국해안·해양공학회논문집, v.32, no.5, pp.363 - 371, 2020
Publisher
한국해안,해양공학회
Keywords
modified BM spectrum; JONSWAP spectrum; parameter estimation; peak enhancement factor; wave measurement
Type
Article
Language
Korean
Publisher
한국해안,해양공학회
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