高频波浪的测量与谱分析  

Measurement and Spectrum Analysis of the High-frequency Waves

作　　者：孙龙[1] 王树乐[2] 吕红民[3] 闻斌[1] 

机构地区：[1]总参气象水文中心,北京100081 [2]91439部队,辽宁大连116041 [3]中国海洋大学,山东青岛266100

出　　处：《海洋通报》2008年第6期9-14,共6页Marine Science Bulletin

摘　　要：为了解高频海浪的特征,通过在实验室风浪水槽中进行实验测量,获取了风浪高频部分的数据。实验采用直径为0.2mm的细钽丝作传感器,采样间隔为0.005s,每组采集30000个数据,以获得对波浪高频部分的更多的信息。通过分析,得到了高频风浪谱参数及其平衡域的特性,并提出次峰现象可能是采样速率过低、因计算方法造成的假象,并不是海浪特有的高频现象。In order to find out the character of the high-frequency waves, an experiment measure was held in the wind-wave-current flume. Data of the high-frequency wind waves were obtained. This experiment adopts thin tantalum silk whose diameter is 0.2 mm as sensor to measure data every 0.005 seconds. In order to obtain more information about the high frequency waves, each group collects 30 000 data. According to the analysis of the data, some wave characters of the parameter of the spectrum equilibrium range were found. Compared to the low sampling rate of the experiment before, this paper has advanced that the smaller top is not the particular high frequency phenomenon of the wave, probably because of the feint of the low sampling speed or calculation method.

关 键 词：风浪水槽 高频波浪 谱分析 谱平衡域 

分 类 号：P731.22[天文地球—海洋科学]