气候变化领域集成服务门户(CCPortal): Geometrically controlled slow slip enhanced by seismic waves: A mechanism for delayed triggering

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DOI	10.1016/j.epsl.2020.116695
	Geometrically controlled slow slip enhanced by seismic waves: A mechanism for delayed triggering
	Blank D.; Morgan J.; Caniven Y.
发表日期	2021
ISSN	0012821X
卷号	554
英文摘要	Seismic waves generated during earthquakes induce transient stress changes in the crust. These ephemeral perturbations can trigger critically stressed asperities at remote distances, often with significant time delays. The physical mechanism that governs this phenomenon is not completely resolved. Numerical simulations of dynamic perturbations passing along a heterogeneous pre-stressed fault, demonstrate that weak portions of the fault that host ongoing slow slip can transfer stress in response to the perturbations, loading asperities poised for failure. We find that the magnitude of perturbation, the state of the asperity, as well as deformation of the surrounding material, jointly control the delay time between perturbation and triggered event. The slow-slip modulated delayed triggering model that we propose can account for the wide range of observed delay times in nature, including the two end-member cases of no delay and no triggering. Triggered slow slip events in nature might provide warning signs of impending earthquakes, underscoring the importance of high-resolution monitoring of active fault zones. © 2020 Elsevier B.V.
关键词	delayed dynamic triggering earthquakes numerical modeling slow slip
英文关键词	Earthquakes; Seismic waves; Active fault; High-resolution monitoring; Physical mechanism; Slow slip events; Surrounding materials; Transient stress; Triggering model; Warning signs; Fault slips; active fault; computer simulation; crustal structure; deformation mechanism; earthquake mechanism; fault slip; fault zone; numerical model; seismic wave; slip rate; stress change; structural control; trigger mechanism; wave generation
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203036
作者单位	Rice University, 6100 Main Street, Houston, TX 77005, United States; University of Montpellier, CNRS France, 641 Av. Du Doyen Gaston Giraud, Montpellier, 34000, France
推荐引用方式 GB/T 7714	Blank D.,Morgan J.,Caniven Y.. Geometrically controlled slow slip enhanced by seismic waves: A mechanism for delayed triggering[J],2021,554.
APA	Blank D.,Morgan J.,&Caniven Y..(2021).Geometrically controlled slow slip enhanced by seismic waves: A mechanism for delayed triggering.Earth and Planetary Science Letters,554.
MLA	Blank D.,et al."Geometrically controlled slow slip enhanced by seismic waves: A mechanism for delayed triggering".Earth and Planetary Science Letters 554(2021).