Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence

Abstract Faults communicate with each other. Strong earthquakes perturb stress over large volumes modifying the load on nearby faults and their resistance to slip. The causative fault induces permanent or transient perturbations that can change the time to the next seismic rupture with respect to th...

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Autores principales:	Nicola Alessandro Pino, Vincenzo Convertito, Raul Madariaga
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/88f1e6a4ab5d47508b5877f398e17e15
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spelling	oai:doaj.org-article:88f1e6a4ab5d47508b5877f398e17e152021-12-02T16:08:28ZClock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence10.1038/s41598-019-41453-12045-2322https://doaj.org/article/88f1e6a4ab5d47508b5877f398e17e152019-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-41453-1https://doaj.org/toc/2045-2322Abstract Faults communicate with each other. Strong earthquakes perturb stress over large volumes modifying the load on nearby faults and their resistance to slip. The causative fault induces permanent or transient perturbations that can change the time to the next seismic rupture with respect to that expected for a steadily accumulating stress. For a given fault, an increase of stress or a strength decrease would drive it closer to - or maybe even trigger - an earthquake. This is usually perceived as an undesired circumstance. However, with respect to the potential damage, a time advance might not necessarily be a bad thing. Here we show that the central Italy seismic sequence starting with the Amatrice earthquake on 24 August 2016 advanced the 30 October Norcia earthquake (MW = 6.5), but limited its magnitude by inhibiting the rupture on large portions of the fault plane. The preceding events hastened the mainshock and determined its features by shaping a patch of concentrated stress. During the Norcia earthquake, the coseismic slip remained substantially confined to this patch. Our results demonstrate that monitoring the seismicity with very dense networks and timely analyses can make it feasible to map rupture prone areas.Nicola Alessandro PinoVincenzo ConvertitoRaul MadariagaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicola Alessandro Pino Vincenzo Convertito Raul Madariaga Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
description	Abstract Faults communicate with each other. Strong earthquakes perturb stress over large volumes modifying the load on nearby faults and their resistance to slip. The causative fault induces permanent or transient perturbations that can change the time to the next seismic rupture with respect to that expected for a steadily accumulating stress. For a given fault, an increase of stress or a strength decrease would drive it closer to - or maybe even trigger - an earthquake. This is usually perceived as an undesired circumstance. However, with respect to the potential damage, a time advance might not necessarily be a bad thing. Here we show that the central Italy seismic sequence starting with the Amatrice earthquake on 24 August 2016 advanced the 30 October Norcia earthquake (MW = 6.5), but limited its magnitude by inhibiting the rupture on large portions of the fault plane. The preceding events hastened the mainshock and determined its features by shaping a patch of concentrated stress. During the Norcia earthquake, the coseismic slip remained substantially confined to this patch. Our results demonstrate that monitoring the seismicity with very dense networks and timely analyses can make it feasible to map rupture prone areas.
format	article
author	Nicola Alessandro Pino Vincenzo Convertito Raul Madariaga
author_facet	Nicola Alessandro Pino Vincenzo Convertito Raul Madariaga
author_sort	Nicola Alessandro Pino
title	Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
title_short	Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
title_full	Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
title_fullStr	Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
title_full_unstemmed	Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence
title_sort	clock advance and magnitude limitation through fault interaction: the case of the 2016 central italy earthquake sequence
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/88f1e6a4ab5d47508b5877f398e17e15
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_version_	1718384483246276608

Clock advance and magnitude limitation through fault interaction: the case of the 2016 central Italy earthquake sequence

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