Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)

Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)

4th Fault2SHA Workshop, Fault Complex Interaction: Characterization and Integration into Seismic Hazard Assessment (SHA), 3-5 June 2019, Barcelona

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Main Authors: Estrada, Ferran, González-Vida, José Manuel, Peláez Montilla, José A., Galindo Zaldívar, Jesús, Ercilla, Gemma, Vázquez, Juan Tomás
Format: comunicación de congreso biblioteca
Published: 2019-06
Online Access:http://hdl.handle.net/10261/188525
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spelling dig-icm-es-10261-1885252022-12-12T12:04:33Z Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea) Estrada, Ferran González-Vida, José Manuel Peláez Montilla, José A. Galindo Zaldívar, Jesús Ercilla, Gemma Vázquez, Juan Tomás 4th Fault2SHA Workshop, Fault Complex Interaction: Characterization and Integration into Seismic Hazard Assessment (SHA), 3-5 June 2019, Barcelona Traditionally, transcurrent faults in marine areas have not been considered as potential triggers of tsunamis due to their kinematics that do not displace the sea bottom. However, they may present significant vertical offsets at their terminations and therefore, be potentially tsunamigenic. With this scope, we analyze the active Averroes fault (AvF), a NW-SE dextral transcurrent structure with vertical offset at its northern termination. The AvF develops in an active context of tectonic indentation in the central Alboran Sea (Westernmost Mediterranean Sea), consequence of the Nubia-Eurasia plate’s convergence. This fault is located in the southwestward prolongation of the Eastern Betic Shear Zone. The bathymetric and seismic analysis point to the AvF has a maximum vertical offset of 5.4 m for an earthquake of Mw =7.0. The crustal deformation at the sea bottom surface generated by this earthquake has been modeled using the Coulomb 3.3 code using the Okada’s 1992 approach, assuming an elastic halfspace with uniform elastic properties. The deformation pattern is characterized by uplifting (footwall block) and subsiding (hanging wall block) lobes. The tsunami wave propagation generated by the seafloor deformation has been modeled with the Tsunami-HySEA (HySEA stands for Hyperbolic Systems and Efficient Algorithms). The tsunami model shows the influence of the seafloor morphology in the wave propagation, the Spanish coast being the most affected margin by wave heights up to 2.5 m Peer Reviewed 2019-08-20T06:52:41Z 2019-08-20T06:52:41Z 2019-06 2019-08-20T06:52:41Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 4th Fault2SHA Workshop (2019) http://hdl.handle.net/10261/188525 Sí open
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description 4th Fault2SHA Workshop, Fault Complex Interaction: Characterization and Integration into Seismic Hazard Assessment (SHA), 3-5 June 2019, Barcelona
format comunicación de congreso
author Estrada, Ferran
González-Vida, José Manuel
Peláez Montilla, José A.
Galindo Zaldívar, Jesús
Ercilla, Gemma
Vázquez, Juan Tomás
spellingShingle Estrada, Ferran
González-Vida, José Manuel
Peláez Montilla, José A.
Galindo Zaldívar, Jesús
Ercilla, Gemma
Vázquez, Juan Tomás
Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
author_facet Estrada, Ferran
González-Vida, José Manuel
Peláez Montilla, José A.
Galindo Zaldívar, Jesús
Ercilla, Gemma
Vázquez, Juan Tomás
author_sort Estrada, Ferran
title Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
title_short Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
title_full Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
title_fullStr Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
title_full_unstemmed Tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the Averroes Fault (Alboran Sea)
title_sort tsunamigenic risk associated to vertical offset in transcurrent fault termination: the case of the averroes fault (alboran sea)
publishDate 2019-06
url http://hdl.handle.net/10261/188525
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