首页 | 期刊简介 | 编委会 | 投稿指南 | 常用下载 | 联系我们 | 期刊订阅 | In English
引用本文:孙孚,张书文.随机海浪的列率谱分析研究.海洋与湖沼,2001,32(5):547-550.
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1475次   下载 1817 本文二维码信息
码上扫一扫!
分享到: 微信 更多
随机海浪的列率谱分析研究
孙孚,张书文
1.青岛海洋大学物理海洋实验室 青岛266003;2.青岛大学 青岛266071 海洋环境科学和数值模拟国家海洋局重点实验室青岛266061
摘要:
首次将列率谱分析的方法引入到随机海浪的研究。根据不同环境条件下实验室资料,对列率谱与频率谱进行了比较。结果表明,列率频对频率谱高频部分有明显改善,特别对二倍频含能段的分辨具有明显的优越性。另外,列率谱具有计算速度快、简单易行、分辨率高等优点。
关键词:  非线性随机海浪  列率谱  频率谱
DOI:
分类号:
基金项目:国家自然科学基金资助项目49776285号 ;山东省教委资助项目
附件
STUDY OF SEQUENCY SPECTRAL ANALYSIS OF RANDOM SEA WAVES
SUN Fu1, ZHANG Shu-Wen2,3
1.Physical Oceanography Laboratory, University of Qingdao, Qingdao, 266003;2.Qingdao University, Qingdao, 266071;3.Key laboratory of Marine Environment Science and Modelling, State Ocean Ad ministration, Qingdao, 266061
Abstract:
Up to now, a large number of sea wave spectra, especially the wind generated sea wave spectra, have been obtained. Several were derived form the observed wave factors based upon some assumptions, but most were obtained though the correlation function by means of the discrete Fourier transform using wave records. The latter, as the main method to obtain the sea wave spectrum, does well in describing the main part of the spectral energy, whereas some drawbacks exist when dealing with nonlinear random sea wave. In our study, the sequency spectral method for nonlinear random wave is introduced to describe the high frequency nonlinear effect. Experiment was conducted in the wind-wave fume laboratory of Ocean University of Qingdao. Using two kinds of different wind speeds and two fetches in the wind-wave experiment, and a kind of wave essential factor, a group of slope and an array of wave gauge were also used in the bottom slope experimental arrangement. Calculated frequency spectra are compared with the sequency spectra to the basis of different observation data sets. The difference between these two spectra is less significant over the band of the predominant wave energy, but rather significant within higher frequencies, especially near the twice peak frequency. Furthermore, compared with frequency spectral analysis, the sequency spectrum method has many advantages including faster calculating speed, convenient use and high distinguishability.
Key words:  Nonlinear random sea wave, Sequency spectra, Frequency spectra
版权所有 海洋与湖沼 Oceanologia et Limnlolgia Sinica Copyright©2008 All Rights Reserved
主管单位:中国科协技术协会 主办单位:中国海洋湖沼学会
地址:青岛市海军路88号  邮编:266400  电话:0532-82898753  E-mail:ols@qdio.ac.cn
技术支持:北京勤云科技发展有限公司