Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Analysis on Variation of Ocean Wave Statistics

해양파랑의 통계적 변동성 해석

  • RYU Cheong-Ro (Department af ocean Engineering, National Fisheries university of Pusan) ;
  • KIM Hyeon-Ju (Department af ocean Engineering, National Fisheries university of Pusan) ;
  • KIM Jong-Wook (Department af ocean Engineering, National Fisheries university of Pusan)
  • 유정로 (부산수산대학 해양공학과) ;
  • 김현주 (부산수산대학 해양공학과) ;
  • 김종욱 (부산수산대학 해양공학과)
  • Published : 1989.02.01
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Abstract

Using computer simulated irregular waves, variations of ocean wave statistics according to sea state are analyzed, and the reasonable conditions that transform the energy spectrum to individual wave statistics are discussed. Ocean wave statistics varying with sea state are found to respond linearly to the spectral peakedness parameter $Q_p$ and spectrum moments $m_n$ (n = 0, 1, 2${\cdots}{\cdots}\;\infty$ ). It is clarified that the 2nd-order spectrum moment is a reasonable parameter which represents the wave statistics including wave periods, and that the spectrum analysis should be carried out under the conditions of minimum data length of 10 times of peak period $T_p$ with time lag of $7T_p$ to satisfy the stable condition of wave statistics.

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