| Estimation of Wind Wave Frequency Spectra by Use of the Arcsine Law |
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| 作者姓名： | 戴德君 乔方利 王伟 袁业立 |
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| 作者单位： | The First Institute of Oceanography State Oceanic Administration，The First Institute of Oceanography，State Oceanic Administration，Physical Oceanography Laboratory，Ocean University of China，The First Institute of Oceanography，State Oceanic Administration，Qingdao 266061，China，Key Laboratory of Marine Science and Numerical Modeling，State Oceanic Administration，Qingdao 266061，China，Qingdao 266061，China，Key Laboratory of Marine Science and Numerical Modeling，State Oceanic Administration，Qingdao 266061，China，Qingdao 266003，China，Qingdao 266061，China，Key Laboratory of Marine Science and Numerical Modeling，State Oceanic Administration，Qingdao 266061，China |
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| 摘 要： | In the present study,the surface elevation of wind waves oberved in laboratory and in the Bohai Sea are adopted for the estimation of the wind wave frequency spectrum by use of the method of the arcsine law(MAL).The traditional method uses the surface elevation to calculate the correlation and then estimate the frequency spectrum while the MAL,presented by Yu and Lan(1979),uses the time sequence of zero-crossing points of surface elevation rather than directly the surface elevation to calculate the correlation.66 sets of wind wave data obtained in laboratory and 420 sets of data observed in the Bohai Sea are adopted for the examination of the method introduced by Yu and Lan.Results show that the MAL can give reliable estimation of wind wave spectra.Correlation and form of spectra estimated by the MAL are similar to those estimated by the traditional method.The peak frequency and the spectral density in peak frequency by the MAL are close to those obtained by the traditional method.
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| 关 键 词： | 风浪 频谱分析 波谱 反正弦定律 |
| 收稿时间： | 2006-02-21 |
| 修稿时间： | 2006-12-22 |
Estimation of Wind Wave Frequency Spectra by Use of the Arcsine Law |
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| DAI De-jun,QIAO Fang-li,WANG Wei,YUAN Ye-li.Estimation of Wind Wave Frequency Spectra by Use of the Arcsine Law[J].China Ocean Engineering,2007,21(1):105-114. |
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| Authors: | DAI De-jun QIAO Fang-li WANG Wei YUAN Ye-li |
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| Abstract: | In the present study,the surface elevation of wind waves oberved in laboratory and in the Bohai Sea are adopted for the estimation of the wind wave frequency spectrum by use of the method of the arcsine law(MAL).The traditional method uses the surface elevation to calculate the correlation and then estimate the frequency spectrum while the MAL,presented by Yu and Lan(1979),uses the time sequence of zero-crossing points of surface elevation rather than directly the surface elevation to calculate the correlation.66 sets of wind wave data obtained in laboratory and 420 sets of data observed in the Bohai Sea are adopted for the examination of the method introduced by Yu and Lan.Results show that the MAL can give reliable estimation of wind wave spectra.Correlation and form of spectra estimated by the MAL are similar to those estimated by the traditional method.The peak frequency and the spectral density in peak frequency by the MAL are close to those obtained by the traditional method. |
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| Keywords: | wind wave frequency spectrum arcsine law zero-crossing point spectral peak peak frequency |
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