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2011年9月10日瑞昌阳新间M4.6地震序列特征分析
The characteristic analysis of the Ruichang-Yangxin M4.6 earthquake sequence of September 10，2011
- DOI:
- 作者:
- 陈俊华1,2) 申学林1,2) 赵凌云1,2) 魏贵春1,2) 乔岳强1,2,3)
- 作者单位:
- 1）中国武汉430071中国地震局地震研究（地震大地测量重点实验室）2）中国武汉430071湖北省地震局3) 中国武汉430071武汉地震工程研究院
- 关键词:
- 瑞昌阳新间M4.6级地震；地震序列；震源机制；精定位；地质构造
Ruichang-Yangxin M4.6 earthquake, Earthquake sequence, Focal mechanism solution, Precise locating, Geological structure
- 摘要:
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2011年9月10日瑞昌阳新间M4.6级地震之后，震中区附近发生一系列余震活动。本文从序列特征、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：M4.6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，ML2.0级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，M4.6级主震可能由NE向的枫林桥断裂所控制。
After the Ruichang-Yangxin M4.6 earthquake occurred in 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 showed: M4.6 earthquake sequence with higher magnitudes mainly distributed along the NE direction Fenglinqiao fault，weak earthquakes below ML2.0 are mainly distributed along NW direction Xiangfan-Guangji fault zone in Wuxue section，M4.6 earthquake may controlled by NE direction Fenglinqiao fault.
