Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes

Abstract Although data catalog analyses have confirmed that volcanic eruptions are triggered by large earthquakes, the triggering mechanism has been under discussion for many decades. In the present study, recent earthquake and volcanic data from the past 35–55 years were analyzed, and it was demons...

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Autor principal:	Takeshi Nishimura
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f61bbf82281e4163befb4050a3ed5691
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spelling	oai:doaj.org-article:f61bbf82281e4163befb4050a3ed56912021-12-02T15:09:23ZVolcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes10.1038/s41598-021-96756-z2045-2322https://doaj.org/article/f61bbf82281e4163befb4050a3ed56912021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96756-zhttps://doaj.org/toc/2045-2322Abstract Although data catalog analyses have confirmed that volcanic eruptions are triggered by large earthquakes, the triggering mechanism has been under discussion for many decades. In the present study, recent earthquake and volcanic data from the past 35–55 years were analyzed, and it was demonstrated for the first time that the likelihood of new eruptions increases two to three times in the 5–10 years following large earthquakes for volcanoes where the generated static dilatational strain exceeds 0.5 µ, which may, for example, activate gas bubble growth and thereby generate a buoyant force in the magma. In contrast, the eruption likelihood does not increase for volcanoes that are subjected to strong ground motion alone, which affect the magma system and volcanic edifice. These results indicate that we can evaluate the likelihood of triggered eruptions and prepare for new eruptions when a large earthquake occurs.Takeshi NishimuraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takeshi Nishimura Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
description	Abstract Although data catalog analyses have confirmed that volcanic eruptions are triggered by large earthquakes, the triggering mechanism has been under discussion for many decades. In the present study, recent earthquake and volcanic data from the past 35–55 years were analyzed, and it was demonstrated for the first time that the likelihood of new eruptions increases two to three times in the 5–10 years following large earthquakes for volcanoes where the generated static dilatational strain exceeds 0.5 µ, which may, for example, activate gas bubble growth and thereby generate a buoyant force in the magma. In contrast, the eruption likelihood does not increase for volcanoes that are subjected to strong ground motion alone, which affect the magma system and volcanic edifice. These results indicate that we can evaluate the likelihood of triggered eruptions and prepare for new eruptions when a large earthquake occurs.
format	article
author	Takeshi Nishimura
author_facet	Takeshi Nishimura
author_sort	Takeshi Nishimura
title	Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
title_short	Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
title_full	Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
title_fullStr	Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
title_full_unstemmed	Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
title_sort	volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f61bbf82281e4163befb4050a3ed5691
work_keys_str_mv	AT takeshinishimura volcaniceruptionsaretriggeredinstaticdilatationalstrainfieldsgeneratedbylargeearthquakes
_version_	1718387851984371712

Volcanic eruptions are triggered in static dilatational strain fields generated by large earthquakes

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