实测海洋环境噪声数据谱级特性研究  

Analysis on the Characteristics of Measured Ocean Ambient Noise Spectrum

作　　者：魏永星[1] 于金花[1] 李琦[1] 周莹[1] 常哲[1] 牛志华[1] 高超[1] 

机构地区：[1]国家海洋技术中心,天津300112

出　　处：《海洋技术学报》2016年第3期36-39,共4页Journal of Ocean Technology

基　　金：国家海洋公益性行业科研专项资助项目(201005004)

摘　　要：通过对噪声测量潜标系统测得的94 d海洋环境噪声数据及相应的气象数据进行联合时频、相关性、统计特性分析,得到试验海区风速、降雨等自然现象与噪声谱级之间的关系。分析结果表明,海洋环境噪声谱级与风速变化在低频段相关性较低,高频段相关性较高,同时1 k Hz以上频段谱级值分布接近呈正态分布;降雨对环境噪声的影响主要分布在500 Hz以上频段。Through 94 d ocean ambient noise data and corresponding meteorological data collected from a submersible buoy system, joint time-frequency, correlation and statistical analyses are conducted to derive the relations between the noise spectrum and natural phenomena such as wind speed and rainfall. The analysis results show a lower correlation between noise spectrum and wind speed change in the lower frequency band and a higher correlation in the upper frequency bands. The distribution of noise spectrum level is close to the normal distribution above 1 k Hz frequency and the effects of rainfall on ambient noise spectrum mainly appear in the band above 500 Hz.

关 键 词：海洋环境噪声 风速 相关性 统计特性 降雨 

分 类 号：TB566[交通运输工程—水声工程]