Earthquake hazard in Mexico City: Observations versus computations

Ordaz, Mario; Reyes, Carlos

doi:10.1785/bssa0890051379

Cited by 67 publications

(8 citation statements)

References 4 publications

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“…For moderate intensities, the differences between both hazard curves are not so large and seem t for the observed data. Similar observations were made by (Ordaz and Reyes 1999).…”

Section: Comparison With Previous Modelssupporting

confidence: 89%

A far-field ground motion prediction model for interface earthquakes at the hill zone of Mexico City

2023

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This study presents an updated attenuation model to predict the peak ground acceleration (PGA), peak ground velocity (PGV), 5% damped pseudo-spectral acceleration (SA), and the average spectral acceleration (AvgSA) at the hill zone of Mexico City for interface earthquakes. The strong-motion dataset comprises 33 earthquakes recorded at CU station, covering a moment magnitude (M w ) range from 6.0 to 8.1 and a source-to-site distance (R rup ) range from 240 to 490 km. Given the small number of available observations, a Bayesian regression scheme is used to obtain the coe cients of the ground-motion prediction model (GMPM). In addition, the epistemic uncertainty in the estimation of the regression coe cients is evaluated, showing its impact on the framework of a probabilistic seismic hazard analysis (PSHA). The results are compared with models previously developed for the CU station, discussing the differences observed between the median predictions and their standard deviations. Likewise, seismic hazard curves are computed and compared with empirical curves obtained by counting the number of times per year that a given value of ground-motion intensity is exceeded. The results show that the dispersion of the GMPM proposed is lower than the previous models for PGA and SA, which means better predictability and more reliable estimates of the seismic hazard at the site.

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“…For moderate intensities, the differences between both hazard curves are not so large and seem t for the observed data. Similar observations were made by (Ordaz and Reyes 1999).…”

Section: Comparison With Previous Modelssupporting

confidence: 89%

A far-field ground motion prediction model for interface earthquakes at the hill zone of Mexico City

2023

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“…Düzce is affected by two of the fourteen seismic sources (zones 1 and 2) for Turkey, as described by Erdik et al (1985), Yaltirak et al (1998) and Kayabali and Akin (2002). Seismic hazard analysis of Düzce has been conducted applying a poissonian probabilistic approach, using CRISIS 99 code (Ordaz 1999), for mean return periods of 100, 475 and 1000 years in a grid of 1 km × 1 km for the city of Düzce (Alexoudi 2005). The main assumption for the seismic source used is that earthquakes occur only along faults (Kayabali and Akin 2002).…”

Section: Düzcementioning

confidence: 99%

Development of comprehensive earthquake loss scenarios for a Greek and a Turkish city: seismic hazard, geotechnical and lifeline aspects

Pitilakis¹,

Anastasiadis²,

Kakderi³

et al. 2011

Earthquakes and Structures

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The development of reliable earthquake mitigation plans and seismic risk management procedures can only be based on the establishment of comprehensive earthquake hazard and loss scenarios. Two cities, Grevena (Greece) and Düzce (Turkey), were used as case studies in order to apply a comprehensive methodology for the vulnerability and loss assessment of lifelines. The methodology has the following distinctive phases: detailed inventory, identification of the typology of each component and system, evaluation of the probabilistic seismic hazard, geotechnical zonation, ground response analysis and estimation of the spatial distribution of seismic motion for different seismic scenarios, vulnerability analysis of the exposed elements at risk. Estimating adequate earthquake scenarios for different mean return periods, and selecting appropriate vulnerability functions, expected damages of the water and waste water systems in Düzce and of the roadway network and waste water system of Grevena are estimated and discussed; comparisons with observed earthquake damages are also made in the case of Düzce, proving the reliability and the efficiency of the proposed methodology. The results of the present study constitute a sound basis for the development of efficient loss scenarios for lifelines and infrastructure facilities in seismic prone areas. The first part of this paper, concerning the estimation of the seismic ground motions, has been utilized in the companion paper by Kappos et al. (2010) in the same journal.

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“…This model includes the earthquake occurrence modeling, magnitude-recurrence relation, seismic source zones, and ground motion prediction equations (GMPEs). The model considers the seismic sources presented in Figure 3, where the seismic sources are separated into three groups (Ordaz and Reyes, 1999;Jaimes and Reinoso, 2006;Reinoso and Jaimes 2009;Nishenko and Singh 1987), depending on the type of earthquake and magnitude considered. The magnitude-recurrence relation and parameters defining the source zones are given by Ordaz and Reyes (1999) for interplate events, and by Jaimes and Reinoso (2006) for intraslab events.…”

Section: Simulation Of the Peak Ground Accelerations And Scaling Of T...mentioning

confidence: 99%

“…The model considers the seismic sources presented in Figure 3, where the seismic sources are separated into three groups (Ordaz and Reyes, 1999;Jaimes and Reinoso, 2006;Reinoso and Jaimes 2009;Nishenko and Singh 1987), depending on the type of earthquake and magnitude considered. The magnitude-recurrence relation and parameters defining the source zones are given by Ordaz and Reyes (1999) for interplate events, and by Jaimes and Reinoso (2006) for intraslab events. The GMPEs employed were those developed by Hong et al (2009) for interplate and intraslab events for places outside Mexico City.…”

Section: Simulation Of the Peak Ground Accelerations And Scaling Of T...mentioning

confidence: 99%

Comparative study of the damage cost of reinforced concrete buildings with and without nonlinear viscous dampers subjected to seismic loading

Flores-Mendoza

Pozos‐Estrada

Gómez

2022

Front. Built Environ.

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In an optimal seismic design context, the seismic demand is characterized by hazard curves that can be obtained by simulation techniques, and the capacity of the structure is established by the designer following a predefined seismic code. The capacity of structures is generally characterized by the seismic design coefficient. Furthermore, the structure damage is evaluated based on certain well-defined damage indicators (e.g., displacement ductility). Thus based on the damage indicator, it is possible to estimate the cost of the associated losses. Furthermore, it is noted that the quantification of the damage costs associated with reinforced concrete (RC) structures with and without nonlinear viscous dampers under seismic loading is very scarce in the relevant literature. In this study, damage cost expressions, similar to those employed in the optimal seismic design criterion, were used to quantify and compare the damage cost on RC buildings with and without viscous dampers located in seismic-prone areas of Mexico. For the analysis, three RC buildings were designed according to Mexican seismic design regulations. The buildings under study were subjected to seismic actions characterized by actual seismic records, scaled according to simulated maximum ground motion accelerations. The damage to the structures caused by seismic action is calculated by means of a damage factor that is a function of displacement ductility demand. The cost of damage to the considered structures was estimated based on cost expressions that are a function of the damage factor. The analyses results indicate that the use of viscous dampers in concrete buildings subjected to seismic action can considerably reduce the associated damage costs with respect to buildings without such a damping system.

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Earthquake hazard in Mexico City: Observations versus computations

Cited by 67 publications

References 4 publications

A far-field ground motion prediction model for interface earthquakes at the hill zone of Mexico City

A far-field ground motion prediction model for interface earthquakes at the hill zone of Mexico City

Development of comprehensive earthquake loss scenarios for a Greek and a Turkish city: seismic hazard, geotechnical and lifeline aspects

Comparative study of the damage cost of reinforced concrete buildings with and without nonlinear viscous dampers subjected to seismic loading

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