摘要
为了能够支撑在城市开展地质活动性的实时监测,克服现有技术不能开展无破坏、精细化和实时的探测和检测的困难,本文提出一种基于多分量地震监测系统AETA电磁扰动观测数据的断裂带监测和分析方法。断裂带活动会影响AETA系统电磁信号幅值和波动程度。根据各测点电磁扰动信号原始数据提取特征值,采用主成分分析方法降维处理,并基于分类算法进行活跃度分类,最后对强信号台站进行拟合,得到断裂带影响区域。在北京、丽江、青川等区域已探明的断裂带开展监测实验,实验结果表明:基于本方法得到的断裂带拟合结果与实际断裂带延伸方向一致,该方法可作为一种新的城市断裂带监测手段。
In order to support real-time monitoring of geological activity in cities and overcome the difficulties of non-destructive,fine and real-time detection in existing technologies,a fault zone monitoring and analysis method based on multi-component seismic monitoring system AETA electromagnetic disturbance observation data is proposed in this paper.The activity degree of the fault zone will affect the amplitudes and fluctuation degrees of the electromagnetic deisturbance signal.The corresponding eigenvalues are extracted,the dimension is reduced by the principal component analysis method,and the activity is classified based on the classification algorithm.Finally,the strong signal station is fitted to get the influence area of the fault zone.Monitoring experiments have been carried out in Beijing,Lijiang,Qingchuan and other areas.The experimental results show that the fitting result of fault zone based on AETA electromagnetic disturbance signal is consistent with the extension direction of actual fault zone,and this method can be used as a new method for urban fault zone monitoring.
作者
何春舅
雍珊珊
郭琴梦
王新安
王培
He Chunjiu;Yong Shanshan;Guo Qinmeng;Wang Xin’an;Wang Pei(The Research Center of Earthquake Monitoring and Forecasting Technology, Peking University Shenzhen Graduate School, Shenzhen Guangdong 518055, China;Shenzhen MSU-BIT University,Shenzhen Guangdong 518100, China)
出处
《工程地球物理学报》
2022年第1期51-56,共6页
Chinese Journal of Engineering Geophysics
基金
深圳市科技创新项目(编号:KJYY20170721151955849,JCYJ20190808161401653)。
关键词
电磁扰动
断裂带监测
城市安全
electromagnetic disturbance
fault zone monitoring
city safety
