摘要
以2018年2月内蒙古自治区赤峰敖汉旗震群为研究对象,通过对震群序列特征、震群与周边中强地震的对应关系及当前赤峰地区的应力状态分析,对敖汉旗震群的性质和活动特征进行了判定。结果表明,赤峰地区具备发生中强地震的地震地质条件,较易发生震群事件,且对周边中强地震具有统计意义上的预测指向性关系;赤峰地区Q值较高、低b值以及单台P波初动极性一致性较好,表明该区应力场呈增强状态。
We take the Aohan earthquake swarm on February 2018 in Chifeng as the object of this study, and determine its property and seismicity characteristics through systematical analysis of the characteristic analysis of the sequence of earthquake swarm, the relationship between the earthquake swarm activity and the surrounding moderate-strong earthquake and the stress state in Chifeng area . The results show that Chifeng area has seismological and geological conditions for moderate and strong earthquakes, and it is easy to produce earthquake swarm events which has a statistical predictive directivity relation to the strong earthquakes around. There are high Q value, low b value and good consistency of the sequence of the earthquake swarm which indicate that the stress field in this area is enhancing .
作者
浩必斯哈拉图
李娟
张帆
刘继伟
包莹
韩晓明
HAOBISIHALATU;LI Juan;ZHANG Fan;LIU Ji-wei;BAO Ying;HAN Xiao-ming(Chifeng Central Seismic Station,Chifeng 024000,China;Earthquake Agency of Autonomous of Inner Mongolia Region,Hohhot 010051,China)
出处
《华北地震科学》
2018年第4期73-78,共6页
North China Earthquake Sciences
基金
2018年度震情跟踪定向工作任务(2018010124)
关键词
震群活动
震源机制解
重新定位
赤峰地区
earthquake swarm activity
focal mechanism solution
relocation
Chifeng area
