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題名 | A Study of the Characteristics of Wave Spectra Over the Seas Around Korea by Using a Parametric Spectrum Method=以參數能譜法研究韓國海域的波譜特徵 |
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作者姓名(外文) | Moon,Il-ju; Oh,Im Sang; | 書刊名 | 臺灣海洋學刊 |
卷期 | 37:1 1998.06[民87.06] |
頁次 | 頁31-46 |
分類號 | 351.94 |
關鍵詞 | 波譜; 參數能譜; 雙峰能譜; Wave spectrum; Parametric spectrum; Double-peaked wave spectrum; |
語文 | 英文(English) |
中文摘要 | 參數能譜法(parametric spectrum method)是以解析函數,表示觀測所得的能譜 。本文以其研究韓國海域的波譜特徵,並提出〞雙峰〞TMA能譜,它包含低頻及高頻的能量 。此項新的雙峰能譜應用於韓國海域的17,750個能譜時,較從前的TMA能譜(Bouws et al., 1985a)改進了20%。 由統計分析雙峰TMA能譜的參數可得,25%的能譜有雙峰的型態,且其出現率隨指示波高 的增加而降低。又,58%的雙峰能譜都有以長湧為主的低頻值。本文也提出在韓國海域的任 一海況下預報,有95%可信度的波浪能譜。 |
英文摘要 | The characteristics of wave spectra over the seas around Korea have been studied by suing a parametric spectrum method that expresses observed spectra in an analytic function. This paper presents a newly developed TMA spectrum called the 'double-peaked TMA spectrum', which is deconstructed into two parts: the low and high frequency components of the energy. The proposed spectrum was applied for the observed 17,750 spectra over the seas around Korea. As a result, this method showed a 20% better fitness than the previous TMA spectrum (Bouws et al., 1985a) for double-peaked spectra. A statistical analysis on the parameters of the double-peaked TMA spectrum was carried out. From these results, 25% of the total analyzed spectra were found to be the double-peaked type, and the occurrence of this type decreased with increasing significant wave height; also, 58% of the double-peaked spectra were found to be the swell-dominated spectra that are dominated by the low frequency peak. This paper also presents the probable spectra which are expected to occur with 95% confidence limits for a given sea severity around Korea. |
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