【摘要】 2011年9月10日瑞昌、阳新间M 4.6地震之后,震中区附近发生一系列余震活动。从序列特征、小震震源机制解、余震活动的时空分布特征以及震区地质构造情况等方面,对该地震序列进行初步研究,结果显示:M 4.6地震序列中较强的地震活动主要沿NE走向的枫林桥断裂分布,M_L 2.0以下的微弱地震活动主要沿NW向的襄樊—广济断裂带武穴段分布,M 4.6主震可能由NE向的枫林桥断裂所控制。更多还原

【Abstract】 After the Ruichang-Yangxin M 4.6 earthquake occurred on September 10,2011,a series of aftershocks have occurred near the epicenter area.Based on the sequence features,focal mechanism solutions of small earthquakes,spatial and temporal characteristics of the aftershock activity and the geological structure factors in this area,we studied the general characteristics of earthquake sequence.The results show that M 4.6 earthquake sequence with higher magnitudes mainly distributed along the NE direction Fenglinqiao fault;weak earthquakes below M_L 2.0 are mainly distributed along NW direction Xiangfan-Guangji fault zone in Wuxue section;M 4.6 earthquake may controlled by NE direction Fenglinqiao fault.更多还原