| Fluctuations of peak energy and peak frequency of local wavelet energy spectrum for wind waves |
| |
| 作者姓名： | Wu Kejianl Lou Shunli |
| |
| 作者单位： | Institute of Physical Oceanography, Ocean University of Qingdao, Qingdao 266003, China;Laboratory of Physical Oceanography, Ocean University of Qingdao, Qingdao 266003, China |
| |
| 基金项目： | This study is jointly supported by the National Natural Science Foundation of China and the Laboratory of Physical Oceanography of Ocean University of Qingdao. |
| |
| 摘 要： | Ｆｌｕｃｔｕａｔｉｏｎｓ ｏｆ ｐｅａｋ ｅｎｅｒｇｙ ａｎｄ ｐｅａｋ ｆｒｅｑｕｅｎｃｙ ｏ ｌｏｃａｌ ｗａｖｅｌｅｔ ｅｎｅｒｇｙ ｓｐｅｃｔｒｕｍ ｆｏｒ ｗｉｎｄ ｗａｖｅｓTXＦｌｕｃｔｕａｔｉｏｎｓｏｆｐｅａｋｅｎｅｒｇｙａｎｄｐｅａｋ...
|
| 关 键 词： | wavelet energy spectrum local spectral peak peak frequency |
| 收稿时间： | 6/2/1996 12:00:00 AM |
| 修稿时间： | 1996/11/8 0:00:00 |
Fluctuations of peak energy and peak frequency of local wavelet energy spectrum for wind waves |
| |
| Wu Kejianl,Lou Shunli.Fluctuations of peak energy and peak frequency of local wavelet energy spectrum for wind waves[J].Acta Oceanologica Sinica,1997,16(4):429-439. |
| |
| Authors: | Wu Kejianl and Lou Shunli |
| |
| Institution: | 1.Institute of Physical Oceanography, Ocean University of Qingdao, Qingdao 266003, China2.Laboratory of Physical Oceanography, Ocean University of Qingdao, Qingdao 266003, China |
| |
| Abstract: | This paper is concerned with the physical interpretations for the statistical uncertainty of the spectral peak energy and peak frequency of the Fourier frequency spectrum.The local wavelet energy spectrum, based on the wavelet transform, is introduced to analyze the wind wave data obtained in a wind wave channel.It is shown that wave energy exhibits localizations both in scale (frequency) and in physical space (time), which implies energy intermittency——the energy at a given frequency may not be evenly distributed in the whole time.Especially, the peak energy and the corre-sponding peak frequency of a local wavelet energy spectrum have significant fluctuations as time evolves.Such intermittency and fluctuations give appropriate interpretations for the above mentioned statistical uncertainty. |
| |
| Keywords: | wavelet energy spectrum local spectral peak peak frequency |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
