Characteristics of a new regional seismic-intensity prediction equation for Spain

Mézcua, J.; Rueda, Juan; Blanco, Rosa M. García

doi:10.1007/s11069-020-03897-x

Cited by 4 publications

(5 citation statements)

References 31 publications

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“…A similar trend was observed by Howell and Schultz (1975). The magnitude coefficient (Mw) was found to remain constant (d=1.4) in the first approximation for both models and had values close to those obtained for the calibrated models of post-900 events by Mezcua et al, (2020), Gomez-Capera et al, (2008a, Bakun (2005) and Mezcua et al, (2004) (Table A1; Table A2). The uncertainty of the Mw coefficient was lower than those estimated for the geometric and anelastic attenuation coefficients, as well as for the independent term of all the calibrated models.…”

Section: Discussion Of Coefficients Trendsupporting

confidence: 82%

“…The classical functional form of macroseismic intensity attenuation, described by equation ( 4), is widely observed in literature from Kovesligethy (1906) to the most recent models calibrated in Mw (Atkinson et al, 2014;Baumont et al, 2018;Gomez-Capera et al 2020;Mezcua et al, 2020; Table A2). This form is similar to the one used by GMPEs, taking into account geometric spreading and anelastic attenuation.…”

Section: Methodsmentioning

confidence: 99%

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Macroseismic intensity attenuation models calibrated in Mw for Italy

Capera

Santulin

D'Amico

et al. 2023

Preprint

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This study aims at developing new macroseismic intensity attenuation models valid for Italy by exploiting the most updated macroseismic dataset and earthquakes catalogue, as well as the information obtained from a critical analysis of the most recent models in the literature. Several different attenuation models have been calibrated as a function of the moment magnitude (Mw) and epicentral distance from 16.260 intensity data points, that are related to 119 earthquakes occurred after 1900. According to trends and residuals analysis, the preferred calibrated intensity (I) attenuation function is a Log-Linear model for epicentral distance (r in km) and a linear model for Mw as: I = 1.81 - 2.61 LogR - 0.0039R + 1.42Mw with R=(r2+(9.87)2)0.5; the estimated standard deviation is σ=0.75. Also noteworthy is an unusual multiplicative model for macroseismic intensity attenuation which performs as well as the best model and shows higher sensitivity to physical parameters, such as focal depth and magnitude, especially in the epicentral area. Performance of all calibrated models was also checked on an independent set of 15 post-1900 Italian earthquakes.

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Section: Discussion Of Coefficients Trendsupporting

confidence: 82%

Section: Methodsmentioning

confidence: 99%

Macroseismic intensity attenuation models calibrated in Mw for Italy

Capera

Santulin

D'Amico

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…where 𝜆(𝐼) is the annual frequency of exceedance of the macroseismic intensity 𝐼, 𝐼 𝑚𝑖𝑛 is the minimum epicentral intensity considered, 𝐼 𝑚𝑎𝑥 is the maximum epicentral intensity for each zone, α is the annual frequency of exceedance of intensities greater or equal to 𝐼 𝑚𝑖𝑛 , and β is the slope related to the Gutenberg-Richter law (Goula et al, 1997;. Ground Motion Prediction Equation Mezcua et al (2020) recently developed new GMPEs for Spain. These GMPEs were developed considering more than 3700 intensities data.…”

Section: Seismic Sourcesmentioning

confidence: 99%

“…The GMPEs developed allows computing values of macroseismic intensities for Spain. In this work, we applied two of the four GMPEs determined by Mezcua et al (2020), the Pyrenees and the SCR (Stable Continental Region), because these two GMPEs (Mezcua et al, 2020) are enough to cover the regions of the seismic sources that were considered in the present work.…”

Section: Seismic Sourcesmentioning

confidence: 99%

“…* σ(α) is the estándar deviation of α; σ(β) is the standard deviation of β; h is the depth in km; Imin is the minimum epicentral intensity assigned to the seismic source; Imax is the maximum epicentral intensity assigned to the seismic source; Imax observed is the maximum epicentral intensity observed in the seismic source.Table 4. Ground Motion Predictions Equations determined byMezcua et al (2020) …”

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confidence: 99%

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Comparative analysis of a new assessment of the seismic risk of residential buildings of two districts of Barcelona

et al. 2021

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There are personal and institutional decisions that can increase the seismic resilience of the buildings in a city. However, some of these decisions are possible if we have basic knowledge of buildings' seismic risk. The present document describes the main results of a detailed study of seismic vulnerability and seismic risk of residential buildings of Ciutat Vella (the ancient district of Barcelona) and Nou Barris (one of the newest districts of Barcelona). In this study, we assessed seismic risk according to the Vulnerability Index Method-Probabilistic named as VIM_P. Moreover, we analyzed the influence of basic buildings' features in the final vulnerability and seismic risk values. For instance, we assessed the seismic vulnerability and the seismic risk of groups of buildings defined according to the number of stories of the buildings. Findings of this research reveal that the annual frequency of exceedance of the collapse damage state in Ciutat Vella buildings is, on average, 4.7 times higher than for the buildings in Nou Barris. Moreover, according to the Best vulnerability curve, 70.31% and 2.81% of Ciutat Vella and Nou Barris buildings, respectively, have an annual frequency of exceedance of the collapse damage state greater than 1x10 -5 .

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A local magnitude scale for a volcanic region: the Canary Islands, Spain

Rueda

Mézcua

2022

Bull Volcanol

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In this study, we define a local magnitude scale for earthquakes occurring in the Canary Islands during the 2003–2020 period. We used data corresponding to 696 earthquakes (excluding those associated with the 2011–2015 El Hierro eruption), which consisted of 9267 observations in a hypocentral distance in the range of 10–500 km. Amplitudes were obtained by deconvolving the original recordings with the instrument response and then convolving the recording with the Wood-Anderson response. The amplitudes were inverted simultaneously to obtain the distance correction terms and station corrections. We found that the amplitude for this set of data is linearly attenuated. However, this is not the case for the seismicity recorded during the 2011 El Hierro eruption, which is the reason for excluding data for that case. We obtain a local magnitude of ML = log A + 0.967 log (R/40) + 0.00142 (R − 40) + 2.445 + S, where A is the maximum amplitude in millimeters of the S wave for the horizontal components of the simulated Wood-Anderson instrument (WA), R is the hypocentral distance in kilometers, and S is the station correction for each component at every station. This relationship indicates that seismic waves at this island volcano setting are less attenuated than those in crustal continental settings, such as across the Iberian Peninsula or in California.

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Characteristics of a new regional seismic-intensity prediction equation for Spain

Cited by 4 publications

References 31 publications

Macroseismic intensity attenuation models calibrated in Mw for Italy

Macroseismic intensity attenuation models calibrated in Mw for Italy

Comparative analysis of a new assessment of the seismic risk of residential buildings of two districts of Barcelona

A local magnitude scale for a volcanic region: the Canary Islands, Spain

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