利用背景噪声的分形方法监控台站观测系统运行状态  

Discussion on Monitoring the Operating State of Seismic Station Observation System by Using Fractal Method of Background Noise

作　　者：丁莉莎 马洁美[2] 齐军伟 谢剑波[1] 廖一帆 卢子晋[1] 叶世山[1] 劳谦[1] 吕仲杭 DING Lisha;MA Jiemei;QI Junwei;XIE Jianbo;LIAO Yifan;LU Zijin;YE Shishan;LAO Qian(L Zhonghang 11Guangdong Earthquake Agency,81 Mid-Xianlie Road,Guangzhou 510070,China;Institute of Geophysics,CEA,5 South-Minzudaxue Road,Beijing 100081,China;Hubei Earthquake Agency,40 Hongshance Road,Wuhan 430071,China)

机构地区：[1]广东省地震局,广州市510070 [2]中国地震局地球物理研究所,北京市100081 [3]湖北省地震局,武汉市430071

出　　处：《大地测量与地球动力学》2021年第4期436-440,共5页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震科技星火计划(XH17025)。

摘　　要：使用全国23个国家测震台站和17个实验台站地震计记录的背景噪声数据,研究特定尺度(限定频带内)的背景噪声特性,分析利用分形方法监测台站观测系统运行状态的可行性。结果表明,分形方法具有较强的时域性,定量化程度高、抗干扰能力强,基本不受观测系统参数约束,可用于台站观测系统运行状态检测,减少正常记录瞬间中断和引入人为干扰的情况。In this paper,we use the data recorded by 23 national seismic stations and 17 experimental seismographs to analyze the characteristics of background noise and the possibility of monitoring the operating state of seismographs by the fractal method.The results show that the fractal method has strong time domain,a high degree of quantification,strong anti-interference ability,and is unrestrained by the observation system parameters.It can test the operation state of the observation system and decrease the situation of interruption of normal records and non-natural interference.

关 键 词：背景噪声 地震仪 分形 运行状态 

分 类 号：P315[天文地球—地震学]