Title

Optimal Smoothing of the Wind–Wave Spectrum Based on the Confidence-Interval Trade-Off.

Authors

Lee, Uk-Jae; Ko, Dong-Hui; Cho, Hong-Yeon

Abstract

In this study, a smoothing method was applied to improve the accuracy of peak wave period estimation using water surface elevation data collected from two oceanographic and meteorological observation towers situated on the western coast of the Korean Peninsula. The effectiveness of the smoothing method was validated by assessing the surface elevation variance and total wave energy. Subsequently, we examined the impact of the smoothing application. The results of our analysis revealed a reduction of approximately 27% in comparison to the confidence interval of the initially estimated spectrum upon applying the smoothing method. Furthermore, a slight variation of approximately 1–2 s was observed between the peak wave period calculated from the estimated spectrum and that obtained through the smoothing process. Utilizing statistical methods to determine the optimal smoothing parameter count, we observed an increasing trend as the range of significant wave heights decreased.

Subjects

KOREA; WIND waves; OCEANOGRAPHIC observations; METEOROLOGICAL observations; WAVE energy; CONFIDENCE intervals

Publication

Journal of Marine Science & Engineering, 2023, Vol 11, Issue 11, p2062

ISSN

2077-1312

Publication type

Academic Journal

DOI

10.3390/jmse11112062