摘要
利用背景噪声的功率谱密度的统计特征,对宾川主动源周边接收台站1~10 Hz有效频带的噪声水平进行了分析。结果表明:较好的台站观测条件和观测环境可以大大提高气枪信号的记录质量,通过建立和维护高质量的观测台站,可以减少获取高信噪比的气枪信号的叠加次数,也可以在同等叠加次数下获取更远的传播距离。
We analysis the noise level of stations by using the statistical characteristics of background noise power spectral densities when the effective frequency is in the range of1~10Hz at Binchuan region The results show that the quality of records can be improved greatly with better observation condition and environment,the superposition of air-gun signals with high signal-to-noise ratio can be reduced,and the farther propagation distance also can be achieved with the same superposition by building and maintaining the stations with high quality
作者
李孝宾
陈佳
高琼
叶泵
龙志强
张云鹏
杨军
LI Xiaobin;CHEN Jia;GAO Qiong;YE Beng;LONG Zhiqiang;ZHANG Yunpeng;YANG Jun(Western Yunnan Earthquake Prediction Study Area,China Earthquake Administration,Dali 671000,Yunnan,China;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)
出处
《地震研究》
CSCD
北大核心
2017年第4期572-580,共9页
Journal of Seismological Research
基金
国家自然科学基金资助项目(41474048)
云南省地震局青年基金(201608)
云南省陈颙院士工作站(2014IC007)共同资助
关键词
概率谱密度
噪声评估
台基处理
对比观测
气枪震源
probabilistic power spectral density
noise level assssment
comparative observation
air-gun source
