气候变化领域集成服务门户(CCPortal): Reactivating and Calming Volcanoes: The 2015 MW 8.3 Illapel Megathrust Strike

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DOI	10.1029/2020GL087738
	Reactivating and Calming Volcanoes: The 2015 MW 8.3 Illapel Megathrust Strike
	Farías C.; Basualto D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	The 2015 MW 8.3 Illapel earthquake was followed in a time frame of weeks to months by very different responses from Nevados de Chillán, Copahue, and Villarrica volcanoes, all located more than 580 km from the rupture zone. Here we show how Nevados de Chillán and Copahue started new eruptive phases, and Villarrica entered in a period of relative calm. Using seismic, geodetic, and geochemical observations, in combination with numerical wave propagation simulations, we also show that the geometry of the fault system controlled the impact of the earthquake on each volcano. We argue that the sensitivity of a volcano toward an earthquake depends on both its critical state before the mainshock and the geometry of its fault system. This is a case where the same earthquake generates very different responses at the same time, at large distances, rendering volcanoes as very sensitive systems. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Critical current density (superconductivity); Faulting; Volcanoes; Wave propagation; Critical state; Fault system; Mainshock; Megathrust; Numerical wave propagation; Rupture zone; Sensitive systems; Time frame; Earthquakes; critical state; earthquake rupture; geometry; shock wave; thrust; volcanic earthquake; volcano; wave propagation; Chile; Copahue; Coquimbo; Illapel; Neuquen; Southern Volcanic Zone; Villarrica Volcano
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/169877
作者单位	Departamento de Geología y Obras Civiles, Universidad Católica de Temuco, Temuco, Chile; Departamento de Ingeniería en Obras Civiles, Facultad de Ingeniería y Ciencias, Universidad de la Frontera, Temuco, Chile; Escuela de Geología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
推荐引用方式 GB/T 7714	Farías C.,Basualto D.. Reactivating and Calming Volcanoes: The 2015 MW 8.3 Illapel Megathrust Strike[J],2020,47(16).
APA	Farías C.,&Basualto D..(2020).Reactivating and Calming Volcanoes: The 2015 MW 8.3 Illapel Megathrust Strike.Geophysical Research Letters,47(16).
MLA	Farías C.,et al."Reactivating and Calming Volcanoes: The 2015 MW 8.3 Illapel Megathrust Strike".Geophysical Research Letters 47.16(2020).