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.
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)
关键词
海洋环境噪声
风速
相关性
统计特性
降雨
ocean ambient noise
wind speed
correlation
statistical analysis
rainfall
