Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean

Abstract Tsunamis are triggered by sudden seafloor displacements, and usually originate from seismic activity at faults. Nevertheless, strike-slip faults are usually disregarded as major triggers, as they are thought to be capable of generating only moderate seafloor deformation; accordingly, the ts...

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Autores principales:	F. Estrada, J. M. González-Vida, J. A. Peláez, J. Galindo-Zaldívar, S. Ortega, J. Macías, J. T. Vázquez, G. Ercilla
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/70d328e119ca48878710bd9705a76a9c
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spelling	oai:doaj.org-article:70d328e119ca48878710bd9705a76a9c2021-12-02T15:08:10ZTsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean10.1038/s41598-021-95729-62045-2322https://doaj.org/article/70d328e119ca48878710bd9705a76a9c2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95729-6https://doaj.org/toc/2045-2322Abstract Tsunamis are triggered by sudden seafloor displacements, and usually originate from seismic activity at faults. Nevertheless, strike-slip faults are usually disregarded as major triggers, as they are thought to be capable of generating only moderate seafloor deformation; accordingly, the tsunamigenic potential of the vertical throw at the tips of strike-slip faults is not thought to be significant. We found the active dextral NW–SE Averroes Fault in the central Alboran Sea (westernmost Mediterranean) has a historical vertical throw of up to 5.4 m at its northwestern tip corresponding to an earthquake of Mw 7.0. We modelled the tsunamigenic potential of this seafloor deformation by Tsunami-HySEA software using the Coulomb 3.3 code. Waves propagating on two main branches reach highly populated sectors of the Iberian coast with maximum arrival heights of 6 m within 21 and 35 min, which is too quick for current early-warning systems to operate successfully. These findings suggest that the tsunamigenic potential of strike-slip faults is more important than previously thought, and should be taken into account for the re-evaluation of tsunami early-warning systems.F. EstradaJ. M. González-VidaJ. A. PeláezJ. Galindo-ZaldívarS. OrtegaJ. MacíasJ. T. VázquezG. ErcillaNature 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 F. Estrada J. M. González-Vida J. A. Peláez J. Galindo-Zaldívar S. Ortega J. Macías J. T. Vázquez G. Ercilla Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
description	Abstract Tsunamis are triggered by sudden seafloor displacements, and usually originate from seismic activity at faults. Nevertheless, strike-slip faults are usually disregarded as major triggers, as they are thought to be capable of generating only moderate seafloor deformation; accordingly, the tsunamigenic potential of the vertical throw at the tips of strike-slip faults is not thought to be significant. We found the active dextral NW–SE Averroes Fault in the central Alboran Sea (westernmost Mediterranean) has a historical vertical throw of up to 5.4 m at its northwestern tip corresponding to an earthquake of Mw 7.0. We modelled the tsunamigenic potential of this seafloor deformation by Tsunami-HySEA software using the Coulomb 3.3 code. Waves propagating on two main branches reach highly populated sectors of the Iberian coast with maximum arrival heights of 6 m within 21 and 35 min, which is too quick for current early-warning systems to operate successfully. These findings suggest that the tsunamigenic potential of strike-slip faults is more important than previously thought, and should be taken into account for the re-evaluation of tsunami early-warning systems.
format	article
author	F. Estrada J. M. González-Vida J. A. Peláez J. Galindo-Zaldívar S. Ortega J. Macías J. T. Vázquez G. Ercilla
author_facet	F. Estrada J. M. González-Vida J. A. Peláez J. Galindo-Zaldívar S. Ortega J. Macías J. T. Vázquez G. Ercilla
author_sort	F. Estrada
title	Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
title_short	Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
title_full	Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
title_fullStr	Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
title_full_unstemmed	Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean
title_sort	tsunami generation potential of a strike-slip fault tip in the westernmost mediterranean
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/70d328e119ca48878710bd9705a76a9c
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Tsunami generation potential of a strike-slip fault tip in the westernmost Mediterranean

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