Seismic hazard scenarios through different modeling of the Carboneras fault and its impact on the expected ground motion in the city of Almeria

Benito Oterino, Maria Belen and Rivas Medina, Alicia and Gaspar Escribano, Jorge Miguel and Staller Vazquez, Alejandra and Martinez Cuevas, Sandra (2019). Seismic hazard scenarios through different modeling of the Carboneras fault and its impact on the expected ground motion in the city of Almeria. In: "4thworkshop of the Fault2SHA ESC Working Group", 03/06/2019 - 05/06/2019, Barcelona, España.

Description

Title: Seismic hazard scenarios through different modeling of the Carboneras fault and its impact on the expected ground motion in the city of Almeria
Author/s:
  • Benito Oterino, Maria Belen
  • Rivas Medina, Alicia
  • Gaspar Escribano, Jorge Miguel
  • Staller Vazquez, Alejandra
  • Martinez Cuevas, Sandra
Item Type: Presentation at Congress or Conference (Poster)
Event Title: 4thworkshop of the Fault2SHA ESC Working Group
Event Dates: 03/06/2019 - 05/06/2019
Event Location: Barcelona, España
Title of Book: Proceedings - Fault2SHA ESC
Date: 2019
Subjects:
Freetext Keywords: Movimientos sísmicos
Faculty: E.T.S.I. en Topografía, Geodesia y Cartografía (UPM)
Department: Ingeniería Cartográfica y Topografía
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The Carboneras Fault, located in the Southeast Iberian Peninsula, is one of those with the highest slip rate (a), among the active faults in Spain, and is also one of the longest (L), which also makes it one of the highest potential seismic, in terms of the scalar seismic moment that could be released (Mo). According to QAFI v3 (IGME, 2015), a = 1.1 mm / year and L = 110.5 km, which would make possible an earthquake of magnitude Mw = 7.4, (using the of W & C'94 empirical relationship) with a recurrence interval of TR = 1150 years . The fault is strike slip and pleosysmic studies in it point to minimum of 6 events since the Mid Pleistocene observed in trenches along La Serrata (Moreno, 2010, Moreno et al., 2008) and an elapsed time for Mw 7.4 of 1178 years. On the other hand, the last major event reported historically in the fault is the one that occurred in 1522, with I (EMS) = IX and M = 6.5, which allows estimating an elapsed time of about 500 years for that magnitude. With the available data, hazard estimates have been developed from different fault modeling: 1) TC characteristic earthquake, 2) Brownian model of temporal dependence, 3) Renewal model and 4) Poisson model. The sensitivity of the results to the different source modeling is analyzed, and these are compared in turn with the PGA values of the latest seismic hazard map of Spain (UPM-IGN, 2013). Finally, we analize the impact of the results in the city of Almeria, which is one of the most vulnerable in southern Spain, which makes the impact spread to the seismic risk scenarios that can be expected due to future earthquakes.

More information

Item ID: 64914
DC Identifier: http://oa.upm.es/64914/
OAI Identifier: oai:oa.upm.es:64914
Official URL: https://fault2sha.net/4th-workshop/
Deposited by: Memoria Investigacion
Deposited on: 09 Feb 2021 10:07
Last Modified: 09 Feb 2021 10:07
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