Estimation of the finite fault source model for the 2018 Mw7.1 Acari, Peru earthquake using a hybrid simulation prediction approach

Jiang, Wei; Li, Zhao-Yan

doi:10.1016/j.soildyn.2022.107613

Cited by 5 publications

(2 citation statements)

References 50 publications

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“…Combining these two methods, the spatial wavenumber spectrum of source slip is obtained, and the spatial distribution of slip on the fracture surface is generated. The local source parameters from the source slip distribution data of 211 global earthquakes collected by SRCMOD [18] was also extracted, and the total amount is 6 times more than that of Jiang et al [19]. A new local parameter scaling law is obtained by distinguishing two different types of seism-tectonic areas, namely interpolate zone and seduction zone [20].…”

Section: Parameter Scaling Law Of Finite Fault Source Modelmentioning

confidence: 99%

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

Jiang¹,

Cao²

2023

Structural Durability &Amp; Health Monitoring

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The attenuation relationship of ground motion based on seismology has always been a front subject of engineering earthquake. Among them, the regional finite-fault source model is very important. In view of this point, the general characteristics of regional seism-tectonics, including the dip and depth of the fault plane, are emphasized. According to the statistics of regional seism-tectonics and focal mechanisms in Sichuan, China, and the sensitivity of estimated peak ground acceleration (PGA) attenuation is analyzed, and the dip angle is taken as an average of 70°. Based the statistics of the upper crustal structure and the focal depth of regional earthquakes, the bottom boundary of the sedimentary cover can be used as the upper limit for estimating the depth of upper-edge. The analysis shows that this value is sensitive to PGA. Based on the analysis of geometric relations, the corresponding calculation formula is used, and a set of concepts and steps for building the regional finite-fault source model is proposed. The estimation of source parameters takes into account the uncertainty, the geometric relationship among parameters and the total energy conservation. Meanwhile, a set of reasonable models is developed, which lay a foundation for the further study of regional ground motion attenuation based on seismology.

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Section: Parameter Scaling Law Of Finite Fault Source Modelmentioning

confidence: 99%

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

Jiang¹,

Cao²

2023

Structural Durability &Amp; Health Monitoring

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“…To incorporate inhomogeneity and roughness of slip distribution on the rupture plane, a single asperity is used to estimate the local source parameters. By using the empirical scaling laws from the work by Jiang et al (2021), the local source parameters are determined in terms of the global source parameters. Although empirical scaling law for asperity average slip exists, it is important to calibrate the slip distribution with latest source inversion studies of Yangbi earthquake.…”

Section: Establishment Of the Hybrid Kinematic Fault Modelmentioning

confidence: 99%

City-scale buildings damage estimation based on broadband physics-based ground motion simulation of 2021 M_s 6.4 Yangbi, China, earthquake

Wang,

Zhang,

Lin

et al. 2023

Earthquake Spectra

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This article proposed a computational workflow for city-scale building damage estimation based on broadband physics-based ground motion simulation. The dynamic stiffness matrix method in frequency-wavenumber domain is employed for broadband physics-based ground motion simulation of finite fault along with site response correction using equivalent-linear site response analysis approach. With simulated ground motion, seismic response of buildings, using multi-degree of freedom model, is simulated using nonlinear time history analysis, and building damage is evaluated based on a trilinear backbone curve of story’s nonlinear force-drift model. Main advantage of the framework lies in the employed dynamic stiffness matrix method for ground motion simulation, which can efficiently generate broadband ground motions in perfect parallel and naturally capture the physics of finite fault source, propagation path, and spatial variability characteristics of ground motion. To demonstrate the salient features of proposed workflow, the 2021 Ms 6.4 Yangbi earthquake is simulated with frequency resolution up to 20 Hz, and seismic damage of buildings in Yangbi county are estimated. Results show that most traditional wood-adobe structures suffer moderate to severe damage, and engineered seismic buildings (mostly RC frame) in Yangbi county suffer minor damage, which agrees with field investigation results.

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Influence of source uncertainty on stochastic ground motion simulation: a case study of the 2022 Mw 6.6 Luding, China, earthquake

Dang

Cui

Liu

et al. 2023

Stoch Environ Res Risk Assess

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Estimation of the finite fault source model for the 2018 Mw7.1 Acari, Peru earthquake using a hybrid simulation prediction approach

Cited by 5 publications

References 50 publications

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

City-scale buildings damage estimation based on broadband physics-based ground motion simulation of 2021 M_s 6.4 Yangbi, China, earthquake

Influence of source uncertainty on stochastic ground motion simulation: a case study of the 2022 Mw 6.6 Luding, China, earthquake

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Estimation of the finite fault source model for the 2018 Mw7.1 Acari, Peru earthquake using a hybrid simulation prediction approach

Cited by 5 publications

References 50 publications

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

Regional Finite-Fault Source Model for Development of Ground Motion Attenuation Relationship in Sichuan, China

City-scale buildings damage estimation based on broadband physics-based ground motion simulation of 2021 Ms 6.4 Yangbi, China, earthquake

Influence of source uncertainty on stochastic ground motion simulation: a case study of the 2022 Mw 6.6 Luding, China, earthquake

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City-scale buildings damage estimation based on broadband physics-based ground motion simulation of 2021 M_s 6.4 Yangbi, China, earthquake