Título

Intraslab versus interplate earthquakes as recorded in Mexico City: implications for seismic hazard

Autor

Shri Krishna Singh

Nivel de Acceso

En Embargo

Resumen o descripción

We study the relative importance of interplate and intraslab earthquakes in the seismic hazard of Mexico City by analyzing accelerograms recorded at the hill-zone site of CU (1964-2012) and the lake-bed site of SCT (1985-2012). A(max) exceeded 6 gal during 20 earthquakes at CU during this period. Of these, eight were intraslab events so that the exceedance rate of A(max) >= 6 gal from both types of earthquakes is roughly about the same. The estimated return period of A(max) of 30 gal from the two types of earthquakes is similar to 100 yrs. If we consider high-frequency (2.5-8.5 Hz) acceleration (A(max)(HF)) at CU, then the top 7 out of the 20 events are all intraslab earthquakes. Even at the lake-bed site of SCT, the A(max)(HF) values are, generally, associated with intraslab earthquakes. It follows that the risk from both types of earthquakes to low-rise construction in the city needs careful assessment.

Editor

EARTHQUAKE ENGINEERING RESEARCH INST

Fecha de publicación

17 de octubre de 2013

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Formato

pdf

Fuente

https://journals.sagepub.com/doi/full/10.1193/110612EQS324M

Idioma

Inglés

Relación

EARTHQUAKE SPECTRA

1944-8201

Singh, S. K.; M. Ordaz; X. Perez-Campos and A. Iglesias. 2015. "Intraslab Versus Interplate Earthquakes as Recorded in Mexico City: Implications for Seismic Hazard." Earthquake Spectra, 31(2), 795-812.

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Repositorio de Literatura del Servicio Sismológico Nacional

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