摘要
2017年6月3日内蒙古阿拉善左旗发生5.0级地震,宁夏回族自治区地震局对该地震进行了震前短临跟踪和震后回顾总结。分析认为:测震学资料存在“同心地震窗”开窗、海原震群事件和视应力高值等异常;地球物理场观测资料存在海原地电阻率突跳变化异常、固原地电阻率破年变下降异常和热红外短期显著异常。震前短临跟踪工作体现了地震预测指标体系对震情判定发挥的积极作用。
An MS 5.0 earthquake occurred in Alxa Left Banner,Inner Mongolia,on June 3,2017.The Earthquake Agency of Ningxia Hui Autonomous Region conducted pre-earthquake tracking and post-earthquake review for the earthquake.The seismic records show anomalies of the“Tongxin seismic window”,the Haiyuan earthquake swarm,and abnormal high apparent stress.The anomalies of geophysical field observation include the rising trend of water temperature in the Haiyuan-Ganyanchi,abruptly changing of the resistivity in the Haiyuan,the resistivity decreasing in the Guyuan without an annual change,and the short-term thermal infrared abnormal.The work of short and near tracking before the earthquake shows that the index system of earthquake prediction can play a positive role in earthquake situation determination.
作者
罗恒之
曾宪伟
卫定军
罗国富
司学芸
李新艳
LUO Hengzhi;ZENG Xianwei;WEI Dingjun;LUO Gguofu;SI Xueyun;LI Xinyan(Earthquake Agency of Ningxia Hui Autonomous Region,Yinchuan 750001,China)
出处
《地震地磁观测与研究》
2020年第5期183-191,共9页
Seismological and Geomagnetic Observation and Research
基金
地震科技星火计划(项目编号:XH18053Y)
宁夏地震科研基金课题(项目编号:NX201903)。
关键词
预测指标
地震窗
海原震群
地电阻率
forecasting indicators
Tongxin seismic window
Haiyuan earthquake swarm
ground resistivity