摘要
针对2015年10月29日内蒙古自治区和林格尔出现的小震丛集,以和林格尔地区2010年3月至2015年12月M_L 2.0以上地震为研究对象,利用该时段数字地震波形反演震源参数,采用Brune模式,呈现该地区视应力时空变化特征。结果显示:(1)和林格尔视应力值相对较低;(2)和林格尔小震频发区视应力时序变化无明显映震规律;(3)和林格尔小震丛集视应力与震级出现不同步变化规律。
Acccording to the earthquake cluster,which appeared in Helingeer,Inner Mongolia autonomous region on October29,2015,the earthquakes of ML2.0occurred in Helingeer area during March2010to December2015are studied.Using the inversion of digital seismic waveform data for source parameters of the time frame,adopting the nearby Brune mode,the spatial and temporal variations of stress in the region are rendered.The results show:①Apparent stress value is relatively low in the studying area;②The temporal variation of apparent stress in region of small earthquakes occurred frequently has no obvious relationship with earthquake occurrence;③There is an asynchronous variation rule between the temporal distributions of apparent stress and magnitude of small earthquake cluster in Helingeer.
作者
梁沙沙
韩晓明
Liang Shasha;HAN Xiaoming(Earthquake Agency of Inner Mongolia Autonomous Region,Hohhot 010010,China)
出处
《地震地磁观测与研究》
2018年第1期26-30,共5页
Seismological and Geomagnetic Observation and Research
基金
监测
预测
科研三结合(项目编号:CEA-JC/3JH-160507)
内蒙古自治区科技重大专项
关键词
小震丛集
Brune模式
视应力
时空变化特征
不同步变化
small earthquakes cluster
nearby brune mode
the apparent stress
temporal variation characteristics
asynchronous change
