气候变化领域集成服务门户(CCPortal): Imbricated Aseismic Slip and Fluid Diffusion Drive a Seismic Swarm in the Corinth Gulf; Greece

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DOI	10.1029/2020GL087142
	Imbricated Aseismic Slip and Fluid Diffusion Drive a Seismic Swarm in the Corinth Gulf; Greece
	De Barros L.; Cappa F.; Deschamps A.; Dublanchet P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	The primary processes driving seismic swarms are still under debate. Here, we study the temporal evolution of a seismic swarm that occurred over a 10-day period in October 2015 in the extensional rift of the Corinth Gulf (Greece) using high-resolution earthquakes relocations. The seismicity radially migrates on a normal fault at a fluid diffusion velocity (~125 m/day). However, this migration occurs intermittently, with periods of fast expansion (2 to 10 km/day) during short seismic bursts alternating with quiescent periods. Moreover, the growing phases of the swarm illuminate a high number of repeaters. The swarm migration is likely the results of a combination of multiple driving processes. Fluid upflow in the fault may induce aseismic slip episodes, separated by phases of fluid pressure build-up. The stress perturbation due to aseismic slip may activate small asperities that produce bursts of seismicity during the most intense phases of the swarm. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Diffusion in liquids; Earthquakes; Fluid diffusion; Fluid pressures; High resolution; Normal faults; Quiescent period; Seismic swarm; Stress perturbations; Temporal evolution; Fault slips; earthquake swarm; episodic event; extensional tectonics; fault slip; fluid pressure; induced seismicity; normal fault; perturbation; rift zone; seismicity; temporal evolution; Corinth [Peloponnisos]; Greece; Peloponnisos
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170387
作者单位	Université Côte d'Azur, CNRS, Observatoire de la Côte d'Azur, IRD, Géoazur, Sophia Antipolis, France; Institut Universitaire de France, Paris, France; MINES ParisTech, PSL ResearchUniversity, Paris, France
推荐引用方式 GB/T 7714	De Barros L.,Cappa F.,Deschamps A.,et al. Imbricated Aseismic Slip and Fluid Diffusion Drive a Seismic Swarm in the Corinth Gulf; Greece[J],2020,47(9).
APA	De Barros L.,Cappa F.,Deschamps A.,&Dublanchet P..(2020).Imbricated Aseismic Slip and Fluid Diffusion Drive a Seismic Swarm in the Corinth Gulf; Greece.Geophysical Research Letters,47(9).
MLA	De Barros L.,et al."Imbricated Aseismic Slip and Fluid Diffusion Drive a Seismic Swarm in the Corinth Gulf; Greece".Geophysical Research Letters 47.9(2020).