Comparisons of Recent Prediction Models of Ground-Motion and Seismic Duration for Mexican Interplate and Intraslab Earthquakes Including the Vertical Component and V/H Ratios
Description:
Ground motion prediction equations (GMPEs) are a key part of seismic engineering, since the peak ground accelerations (PGA), peak ground velocities (PGV) and spectral pseudoaccelerations (SA) are used to determine seismic intensities that engineering structures are expected to be subjected to under certain seismic scenarios. They are also employed for the so-called probabilistic seismic hazard assessment (PSHA) and are the basis of some provisions contained within seismic design codes. Predictive ground-motion duration models are not as common, although seismic duration is also a very relevant parameter to designing structural systems under seismic excitations. GMPEs and ground-motion duration models can be developed for the horizontal component, traditionally considered the most critical one in terms of seismic demands imposed to buildings, infrastructure and other engineering structures. However, recent literature points out the need for seismic prediction models for the vertical component, including the relation between seismic intensities from the vertical component and the horizontal component (V/H ratios). Recent GMPEs and duration models of the horizontal and vertical components of ground-motion for Mexico, based on updated databases which include great earthquakes as the date coincidental 19 September 1985 and 2017 seismic events, are compiled and compared in this study. It is concluded that GMPEs and ground-motion duration models should be region-, mechanism-, site- and component-specific to be adequate for seismic engineering purposes. Salient findings of all the considered models are highlighted.
Session: From Earthquake Recordings to Empirical Ground-Motion Modelling - III
Type: Oral
Date: 5/2/2024
Presentation Time: 02:15 PM (local time)
Presenting Author: Adrián David
Student Presenter: No
Invited Presentation:
Authors
Adrián David García-Soto Presenting Author Corresponding Author adgarcia@ugto.mx Universidad de Guanajuato |
Miguel A Jaimes mjaimest@iingen.unam.mx National Autonomous University of Mexico, UNAM |
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Comparisons of Recent Prediction Models of Ground-Motion and Seismic Duration for Mexican Interplate and Intraslab Earthquakes Including the Vertical Component and V/H Ratios
Category
From Earthquake Recordings to Empirical Ground-Motion Modelling