Empirical Ground-Motion Relations in Northeastern México from intraplate moderate earthquakes

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:30:10Z
Fecha de publicación2022-01-01
ResumenWe present attenuation relations for peak ground velocity (PGV) and acceleration (PGA) for northeastern Mexico, where seismic activity has been underestimated over the years. We tested four models derived from a parametrical form previously proposed for intraplate earthquakes in Central Mexico but using regional data recorded by the Mexican National Seismological Service (Servicio Sismológico Nacional de Mexico, SSN). For comparison and as a selection criteria, we used the decaying trend of the models, the ratio between the observed and the predicted data (logarithmic) as a function of the distance and its standard deviation, and we determined the following attenuation relations: logPGV=−4.36+0.8Mw−0.00015R−0.97logR−0.0041H+σA+σE logPGA=0.31+0.23Mw+0.0011R−1.48logR−0.0022H+σA+σEWhere MW is the moment magnitude, R the hypocentral distance, and H the focal depth (both in km). σA and σE correspond to the intra-event and inter-event standard deviations. For PGV σAandσE are 0.18 and 0.004, while for PGA σA and σE are 0.25 and 0.30, respectively. We found that by using the original distance definition R, (dependent on the hypocentral distance and on the magnitude altogether), the results are basically the same as when using the hypocentral distance directly. We also tried to incorporate an independent variable to characterize the local soil conditions of the recording stations. Despite the fact of finding a good residual behavior with that incorporation, the empirical functions of acceleration (PGA) stopped decaying around 250 km, implying a physical impasse and making the models inadequate for greater distances, situation that did not occur with velocities (PGV). The obtained constants found for the local site conditions on both PGA and PGV were similar between stations, showing no strong impact on the site effects on the predictive equations. The proposed models fulfill the purposes of having small residual fitting and simple attenuation relations that depend only on magnitude, hypocentral distance and focal depth, making them practical and easy to apply for engineering or seismic risk assessment purposes with the available data from local or regional networks.es_ES
Doihttps://doi.org/10.1080/13632469.2022.2033363es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/2133
Idiomaeses_ES
EditorialInforma UK Limitedes_ES
RelaciónJournal of Earthquake Engineeringes_ES
URL relacionadohttps://doi.org/10.1080/13632469.2022.2033363es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteJournal of Earthquake Engineering
TítuloEmpirical Ground-Motion Relations in Northeastern México from intraplate moderate earthquakeses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorVillalobos-Escobar, Gina P.
AutorMárquez-Ramírez, Víctor H.
AutorCastro, Raúl R.
AutorPeña-Alonso, Tomás A.
AutorVillalobos-Escobar, Gina P.es_ES
AutorMárquez-Ramírez, Víctor H.es_ES
AutorCastro, Raúl R.es_ES
AutorPeña-Alonso, Tomás A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3es_ES
Rango de páginas769-786es_ES
URL relacionadahttps://doi.org/10.1080/13632469.2022.2033363
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen27es_ES

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