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http://dx.doi.org/10.9765/KSCOE.2022.34.6.266

Optimal Estimation of the Peak Wave Period using Smoothing Method  

Uk-Jae, Lee (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science & Technology)
Byeong Wook, Lee (Rural Research Institute, Korea Rural Community Corporation)
Dong-Hui, Ko (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science & Technology)
Hong-Yeon, Cho ( Marine Big-data Center, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.34, no.6, 2022 , pp. 266-274 More about this Journal
Abstract
In this study, a smoothing method was applied to improve the accuracy of peak wave period estimation using the water surface elevation observed from the Oceanographic and Meteorological Observation Tower located on the west coast of the Korean Peninsula. Validation of the application of the smoothing method was per- formed using variance of the surface elevation and total amount wave energy, and then the effect on the application of smoothing was analyzed. As a result of the analysis, the correlation coefficient between variance of the surface elevation and total amount wave energy was 0.9994, confirming that there was no problem in applying the method. Thereafter, as a result of reviewing the effect of smoothing, it was found to be reduced by about 4 times compared to the confidence interval of the existing estimated spectrum, confirming that the accuracy of the estimated peak wave period was improved. It was found that there was a statistically significant difference in proba- bility density between 4 and 6 seconds due to the smoothing application. In addition, for optimal smoothing, the appropriate number of smoothings according to the significant wave height range was calculated using a statistical technique, and the number of smoothings was found to increase due to the unstable spectral shape as the significant wave height decreased.
Keywords
oceanographic and meteorological observation tower; water surface elevation; peak wave period; optimal smoothing; confidence interval;
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Times Cited By KSCI : 4  (Citation Analysis)
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