溧阳测震台观测环境影响因素定量分析及抗干扰措施  

QUANTITATIVE ANALYSIS AND ANTI-INTERFERENCE MEASURES OF THE INFLUENCE FACTORS OF LIYANG SEISMIC STATION OBSERVATION ENVIRONMENT

作　　者：胡米东 毛华锋[1] 陈启林[1] 王皓[1] 张杰[1] 霍雨佳[1] 黄群[1] HU Midong;MAO Huafeng;CHENG Qilin;WANG Hao;ZHANG Jie;HUO Yujia;HUANG Qun(Jiangsu Liyang seismic station,Liyang 213332,China)

机构地区：[1]江苏省溧阳地震台,江苏滦阳213332

出　　处：《高原地震》2022年第1期33-40,共8页Plateau Earthquake Research

基　　金：中国地震局三结合项目(项目编号:3JH-2021019)资助。

摘　　要：通过计算溧阳测震台背景噪声水平、功率谱密度和台站地震监测能力变化情况,定量分析了长山路施工前和通车后对溧阳台观测环境的影响,同时提出了抗干扰措施。分析认为长山路通车后台站背景噪声水平增大;功率谱密度曲线高频段值增大,功率谱密度曲线高频段形态离散;震中距250 km范围内1.0~1.9级地震监测能力降低。In 2016,Changshan Road(provincial first-class highway)near Liyang Seismostation was constructed and opened to traffic in 2018.Based on the background noise level,power spectral density curve and the change of seismic monitoring capacity of Liyang station,the change of observation environment of Changshan road before construction and background station after opening to traffic is quantitatively analyzed,the impact of Changshan Road on the observation environment of Liyang station is studied,and anti-interference measures are put forward.It is found that the background noise level of the backstage station is increases.The high-frequency value of power spectral density curves is increases,and the power spectral density curve is discrete in high frequency.The monitoring ability of M 1.0-1.9 earthquake within 250 km from the epicenter is reduced.

关 键 词：测震台 观测环境 定量分析 功率谱密度 抗干扰措施 

分 类 号：P315.63[天文地球—地震学]