The 2011 Mw 5.2 Lorca earthquake as a case study to investigate the ground motion variability related to the source model

Moratto, Luca; Saraò, Angela; Vuan, Alessandro; Mucciarelli, Marco; Jiménez, M. J.; Garcı́a-Fernández, Mariano

doi:10.1007/s10518-017-0110-1

Cited by 7 publications

(10 citation statements)

References 28 publications

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“…A widely utilized physics-based program is the COMPSYN software package (Spudich and Xu, 2002), which is an established tool for research (Douglas and Aochi, 2008). The earthquakes investigated using COMPSYN include simulating the low-frequency ground-motions (≤1 Hz) of the 2011 Lorca Mw5.2 event in Spain (Moratto et al, 2017), the 2009 L'Aquila Mw6.1 event in Italy (Cirella et al, 2012), the 2003 Bam Mw6.3 event in Iran (Nickman and Eslamian, 2010), and the 2000 Western Tottori Mw6.7 event in Japan (Monelli and Mai, 2008). Roumelioti et al (2017) and Ameri et al (2008) used COMPSYN to simulate the low-frequency content of ground motions of the potentially dangerous faults near Xanthi and Thessaloniki in northern Greece, respectively.…”

Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

“…The immediate question is how to provide rupture parameters for the kinematic fault model. Moratto et al (2017) and Cirella et al (2012) determined rupture parameters from InSAR, DInSAR (Differential Synthetic Aperture Radar Interferometry), strong motion and seismological data, and GPS. Rupture parameters have also been determined by genetic algorithms (Nickman and Eslamian, 2010), the Bayesian infere nce approach (Monelli andMai, 2008), trial-and-error (Ameri et al, 2008), or by assuming a physical rupture process (Fälth et al, 2015).…”

Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

“…The COMPSYN program has mainly been limited to the simulation of low frequencies. The highfrequency content of synthetic ground motions was computed with stochastic models (Ameri et al , 2008;Nickman and Eslamian, 2010;Roumelioti et al, 2017), or with Empirical Green Functions (Moratto et al, 2017). The arguments for not using COMPSYN for the high-frequency content of synthetic ground motions were its inefficiency above 3 Hz (Nickman and Eslamian, 2010) and the computational cost of the Green's functions (Mai and Beroza, 2003).…”

Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

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Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe

Jussila

Fälth

Mäntyniemi

et al. 2021

Bulletin of the Seismological Society of America

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We present a modeling technique for generating synthetic ground motions, aimed at earthquakes of design significance for critical structures and ground motions at distances corresponding to the engineering near field, in which real data are often missing. We use dynamic modeling based on the finite-difference approach to simulate the rupture process within a fault, followed by kinematic modeling to generate the ground motions. The earthquake source ruptures were modeled using the 3D distinct element code (Itasca, 2013). We then used the complete synthetic program by Spudich and Xu (2002) to simulate the propagation of seismic waves and to obtain synthetic ground motions. In this work, we demonstrate the method covering the frequency ranges of engineering interests up to 25 Hz and quantify the differences in ground motion generated. We compare the synthetic ground motions for distances up to 30 km with a ground-motion prediction equation, which synthesizes the expected ground motion and its randomness based on observations. The synthetic ground motions can be used to supplement observations in the near field for seismic hazard analysis. We demonstrate the hybrid approach to one critical site in the Fennoscandian Shield, northern Europe.

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Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

Section: Background To Synthetic Ground Motion Modellingmentioning

confidence: 99%

See 1 more Smart Citation

Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe

Jussila

Fälth

Mäntyniemi

et al. 2021

Bulletin of the Seismological Society of America

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“…We modelled different rupture nucleation points and seismic moment distributions since these parameters affect the rise time and rupture velocity in the pseudodynamic model (Guattieri et al 2004) and thus the simulated ground motion (e.g., Moratto et al 2017;Cultrera et al 2010). The PGM mean values (with their related standard deviation) are then extracted, and the related uncertainties are estimated.…”

Section: Methodsmentioning

confidence: 99%

“…Seismic waveforms are computed for a grid of receivers to reproduce and oversample the ground motion spatial variability in the near field (Lin et al 2005;Douglas 2007;Moratto et al 2017). Multiple receivers allow us to account for uncertainties due to source mislocation that affects the source-receiver distance, evidencing possible azimuthal variations due to the source radiation pattern, directivity, and other parameters that could influence ground motion.…”

Section: Methodsmentioning

confidence: 99%

Seismic hazard for the Trans Adriatic Pipeline (TAP). Part 2: broadband scenarios at the Fier Compressor Station (Albania)

Moratto

Vuan

Saraò

et al. 2021

Bull Earthquake Eng

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To ensure environmental and public safety, critical facilities require rigorous seismic hazard analysis to define seismic input for their design. We consider the case of the Trans Adriatic Pipeline (TAP), which is a pipeline that transports natural gas from the Caspian Sea to southern Italy, crossing active faults and areas characterized by high seismicity levels. For this pipeline, we develop a Probabilistic Seismic Hazard Assessment (PSHA) for the broader area, and, for the selected critical sites, we perform deterministic seismic hazard assessment (DSHA), by calculating shaking scenarios that account for the physics of the source, propagation, and site effects. This paper presents a DSHA for a compressor station located at Fier, along the Albanian coastal region. Considering the location of the most hazardous faults in the study site, revealed by the PSHA disaggregation, we model the ground motion for two different scenarios to simulate the worst-case scenario for this compressor station. We compute broadband waveforms for receivers on soft soils by applying specific transfer functions estimated from the available geotechnical data for the Fier area. The simulations reproduce the variability observed in the ground motion recorded in the near-earthquake source. The vertical ground motion is strong for receivers placed above the rupture areas and should not be ignored in seismic designs; furthermore, our vertical simulations reproduce the displacement and the static offset of the ground motion highlighted in recent studies. This observation confirms the importance of the DSHA analysis in defining the expected pipeline damage functions and permanent soil deformations.

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Significance of directivity effects during the 2011 Lorca earthquake in Spain

Gordo-Monsó

Miranda

2018

Bull Earthquake Eng

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The 2011 Mw 5.2 Lorca earthquake as a case study to investigate the ground motion variability related to the source model

Cited by 7 publications

References 28 publications

Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe

Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe

Seismic hazard for the Trans Adriatic Pipeline (TAP). Part 2: broadband scenarios at the Fier Compressor Station (Albania)

Significance of directivity effects during the 2011 Lorca earthquake in Spain

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