【摘要】 文章主要针对2013年山西及其邻区3次M L3.0以上震群,从地震活动特征、序列参数、震源机制解等方面进行分析研究,经计算得出,震群参数均具有前兆特性。同时,结合1981年至2013年,山西震群震例对应地震情况以及目前山西地震活动图像异常等,认为山西中北部的地震危险性有所增强。更多还原

【Abstract】 3 Earthquake swarms with M L larger than 3.0 in Shanxi and its adjacent areas in 2013 are studied from aspects of characteristics of seismic activity,sequence parameters and focal mechanism solutions etc.in this paper.The result indicate that earthquake swarm parameters calculated are of precursor significance.Meanwhile,by analyzing the cases of correspondence of earthquake swarms to earthquake occurrences from 1981 to 2013 as well as the current abnormal seismic activity image in Shanxi,it is concluded that seismic risk of northern and central part of Shanxi has increased.更多还原