靖宇——抚松Ms4.6级地震序列特征
|
摘要
2008年8月5日靖宇-抚松发生Ms4.6级地震。本文对这次地震的区域地质构造、震源机制、地震序列特征等进行了分析。结果表明,此次地震的发震构造是浑江断裂带;震前地震活动呈现"稀疏—密集—平静"特征,余震衰减正常;序列空间位置变化不大,相对集中在北东向条状分布,走向与浑江断裂带一致。
The Ms4.6 earthquake was occurred between Jingyu and Fusong on Aug.5,2009.The regional geological structure,the focal mechanism,seismic Sequence Characteristics and so on were analylsed in this paper.The results show that the Hunjiang fault zone was the seismotectionnics of this event.Seismic activity emerged'sparsity-intensiveness-equilibrium'characteristics.The aftershocks attenuated normally and variation in space of theseearthquakes was not large.The zone fomed by the whole sequence was mainly distributed in NE direction and itsdirectoin was the same as the Hunjiang fault.
The Ms4.6 earthquake was occurred between Jingyu and Fusong on Aug.5,2009.The regional geological structure,the focal mechanism,seismic Sequence Characteristics and so on were analylsed in this paper.The results show that the Hunjiang fault zone was the seismotectionnics of this event.Seismic activity emerged'sparsity-intensiveness-equilibrium'characteristics.The aftershocks attenuated normally and variation in space of theseearthquakes was not large.The zone fomed by the whole sequence was mainly distributed in NE direction and itsdirectoin was the same as the Hunjiang fault.
引文
[1]吉林省地矿局.吉林省区域地质志M.北京:地质出版社,1982.
[2]胡博等.内蒙古地区中强地震序列特征研究[J],华北地震科学,2006
[3]盘晓东等.抚松M4.4地震极其发生构造背景分析[J],东北地震研究,2005.
[4]罗灼礼等.地震活动“密集-平静”现象的混沌特性探讨[J],地震,2007.
[2]胡博等.内蒙古地区中强地震序列特征研究[J],华北地震科学,2006
[3]盘晓东等.抚松M4.4地震极其发生构造背景分析[J],东北地震研究,2005.
[4]罗灼礼等.地震活动“密集-平静”现象的混沌特性探讨[J],地震,2007.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心