Aftershocks due to property variations in the fault zone: A mechanical   model

doi:10.1016/j.tecto.2012.12.013

CORC > 北京大学 > 地球与空间科学学院

	Aftershocks due to property variations in the fault zone: A mechanical model
	Hu, Caibo ; Cai, Yongen ; Liu, Mian ; Wang, Zhenming
刊名	tectonophysics
	2013
关键词	Aftershocks Material damage Initial stress field Finite element model SAN-ANDREAS FAULT LANDERS EARTHQUAKE SEQUENCE STRIKE-SLIP FAULTS 7.1 HECTOR MINE SOUTHERN CALIFORNIA STRESS TRANSFER CAJON PASS DEFORMATION FIELD INSIGHTS
DOI	10.1016/j.tecto.2012.12.013
英文摘要	Studies of many large strike-slip earthquakes have shown that the seismicity rate increases in quadrants in which the Coulomb stress is increased by the earthquake rupture. This mechanism explains the concentration of aftershocks near the tips of the fault rupture, but cannot explain the aftershocks on the sides of the rupture zone, where the aftershocks are commonly abundant. We suggest that these aftershocks may be induced by variations of fault-zone properties not included in the previous models. In a finite-element model that treats the rupture plane as a zone with heterogeneous physical properties, as suggested by field observations and laboratory experiments, the Coulomb-stress changes triggered by the mainshock no longer uniformly decrease on the sides of the rupture zone, but show complex patterns of negative and positive changes. These results may explain some of the aftershocks on the sides of the mainshock rupture. (C) 2012 Elsevier B.V. All rights reserved.; Geochemistry & Geophysics; SCI(E); EI; 1; ARTICLE; 179-188; 588
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155657]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Hu, Caibo,Cai, Yongen,Liu, Mian,et al. Aftershocks due to property variations in the fault zone: A mechanical model[J]. tectonophysics,2013.
APA	Hu, Caibo,Cai, Yongen,Liu, Mian,&Wang, Zhenming.(2013).Aftershocks due to property variations in the fault zone: A mechanical model.tectonophysics.
MLA	Hu, Caibo,et al."Aftershocks due to property variations in the fault zone: A mechanical model".tectonophysics (2013).