地震地磁观测与研究2016，Vol.37Issue(2)：35-40,6.DOI:10.3969/j.issn.1003-3246.2016.02.006
濮阳小震集中区应力场跟踪分析
Stress field tracking analysis for Puyang clustered micro earthquakes
摘要
Abstract
Using the method of maximum amplitude ratio of vertical component of Pg and Sg waves, focal mechanism solution for 45 medium-small earthquakes withML≥ 2.0 is calculated in Puyang small earthquake concentrated district since 2002 to September 2014. The results show that earthquake source type is dominated by strike-slip, fault structures with incidence of earthquakes are mainly strike-slip and similar strike-slip movement. The patterns of earthquake stress effect are thrust and twist produced by horizontal and nearly horizontal force. Meanwhile, changing characters of the maximum principal stress axis of the small seismic source stress ifeld, as will as the relationship between earthquakes and focal parameters consistency spatial and temporal distribution have been further analyzed, which providing strong support for the routine analysis of earthquake prediction. In order to ifnd the information of stress ifeld temporal and spatial changes related to the earthquake area.关键词
震源机制解/区域应力场/震源机制一致性参数Key words
focal mechanism solution/regional stress ifeld/focal parameters consistency引用本文复制引用
陈亚红,郑建常,张军,申茂正,李铂,邵李娜..濮阳小震集中区应力场跟踪分析[J].地震地磁观测与研究,2016,37(2):35-40,6.基金项目
山东省地震局重点科研基金项目(JJ1202Y) （JJ1202Y）
