摘要
计算2016年3月12日运城盐湖M_L 4.8地震序列谱振幅相关系数,并与2006年代县震群相关系数进行对比分析。结果显示,2016年运城盐湖序列与2006年代县震群谱振幅相关系数总体呈下降趋势,但存在起伏变化,在转折上升过程中发生最大余震或震群的主震;2个地震序列的相关系数平均值均不高,可能是因为震源机制一致性较弱,区域应力水平较低。
In the paper,the correlation coefficient of spectral amplitude of Yanhu ML4.8earthquake sequence in Yuncheng on March12,2016is analyzed and compared with the correlation coefficient of Daixian earthquake swarm in2006.The results show that the correlation coefficient of spectral amplitude of Yuncheng Yanhu earthquake sequence in2016and Daixian earthquake swarm in2006both appear downward trends,existing up and down change,and the largest aftershocks or the mainshock of earthquake swarm occurs in the rising process of correlation coefficient.However,the correlation coefficient of spectral amplitude of two sequence are both not high,probably implying the weaker consistency of focal mechanism and the lower regional stress.
作者
李宏伟
王霞
宋美琴
吴昊昱
Li Hongwei;Wang Xia;Song Meiqin;Wu Haoyu(Shanxi Earthquake Agency, Taiyuan 030021, China)
出处
《地震地磁观测与研究》
2017年第3期35-40,共6页
Seismological and Geomagnetic Observation and Research
基金
山西省地震局科研项目(项目编号:SBK-1401)
关键词
运城盐湖地震序列
谱振幅相关系数
代县震群
Yuncheng Yanhu earthquake sequence
correlation coefficient of spectral amplitude
Daixian earthquake swarm
