摘要
2016年1月9日河北省怀来县发生ML 3.4震群,据历史记载,该区曾发生多次MS 5以上地震,地震活动强烈。为了进一步判断该区后续地震活动趋势,采取地震序列、视应力及波速比方法,对此次震群进行精细分析,结果表明,此次震群为非前兆震群,应力水平较低。
On January 9th, 2016, an ML 3.1 earthquake occurred on Huailai County of Hebei Province. The area is an active area for earthquakes, where many earthquakes of magnitude greater than MS 5 have been recorded in history, to further judge earthquake activity trend in the future, the earthquake swarm is precise analyzed on earthquake sequence, seismic activity, apparent stress and velocity ratio. The result shows that, the earthquake swarm was not a precursory one, the stress level was low.
出处
《地震地磁观测与研究》
2016年第6期9-15,共7页
Seismological and Geomagnetic Observation and Research
基金
北京市地震局科技项目青年专项
关键词
怀来震群
精细分析
活动趋势
Huailai earthquake swarm
precise analysis
activity trend
