Title
Intraslab versus interplate earthquakes as recorded in Mexico City: implications for seismic hazard
Author
Shri Krishna Singh
Access level
Embargoed Access
Subjects
TERREMOTOS DE PROFUNDIDAD INTERMEDIA - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) ZONAS DE SUBDUCCIÓN ACOPLADAS - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) TERREMOTOS INSLAB - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) VARIACIÓN TEMPORAL - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) TRANSFERENCIA DE ESTRÉS - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) SPECTRA - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) CICLO - ([https://journals.sagepub.com/doi/full/10.1193/110612EQS324M]) TEMPORARY VARIATION - (LCC) COUPLED SUBDUCTION ZONES - (LCC) INTERMEDIATE DEPTH EARTHQUAKES - (LCC) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) CIENCIAS DE LA TIERRA Y DEL ESPACIO - (CTI) GEOFÍSICA - (CTI) SISMOLOGÍA Y PROSPECCIÓN SÍSMICA - (CTI) concept8601 - (UNESCO) Seismology - (GEOREF)
Summary or description
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.
Publisher
EARTHQUAKE ENGINEERING RESEARCH INST
Publish date
October 17, 2013
Publication type
Article
Publication version
Published Version
Information Resource
Format
Source
https://journals.sagepub.com/doi/full/10.1193/110612EQS324M
Language
English
Relation
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.
Source repository
Repositorio de Literatura del Servicio Sismológico Nacional
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