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). Amax exceeded 6 gal during 20 earthquakes at CU during this period. Of these, eight were intraslab events so that the exceedance rate of Amax ≥ 6 gal from both types of earthquakes is roughly about the same. The estimated return period of Amax of 30 gal from the two types of earthquakes is ∼100 yrs. If we consider high-frequency (2.5–8.5 Hz) acceleration (AmaxHF) at CU, then the top 7 out of the 20 events are all intraslab earthquakes. Even at the lake-bed site of SCT, the AmaxHF 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.
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May 01, 2015
Intraslab versus Interplate Earthquakes as Recorded in Mexico City: Implications for Seismic Hazard Available to Purchase
Shri K. Singh;
Shri K. Singh
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
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Mario Ordaz;
Mario Ordaz
b
Instituto de Ingeniería, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
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Xyoli Pérez-Campos;
Xyoli Pérez-Campos
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
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Arturo Iglesias
Arturo Iglesias
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
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Shri K. Singh
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
Mario Ordaz
b
Instituto de Ingeniería, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
Xyoli Pérez-Campos
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
Arturo Iglesias
a
Instituto de Geofísica, Universidad Nacional Autónoma de México; México, D.F. 04510, Mexico
Publisher: Earthquake Engineering Research Institute
Received:
06 Nov 2012
Accepted:
17 Oct 2013
First Online:
01 Jun 2020
Online ISSN: 1944-8201
Print ISSN: 8755-2930
© 2015 Earthquake Engineering Research Institute
Earthquake Engineering Research Institute
Earthquake Spectra (2015) 31 (2): 795–812.
Article history
Received:
06 Nov 2012
Accepted:
17 Oct 2013
First Online:
01 Jun 2020
Citation
Shri K. Singh, Mario Ordaz, Xyoli Pérez-Campos, Arturo Iglesias; Intraslab versus Interplate Earthquakes as Recorded in Mexico City: Implications for Seismic Hazard. Earthquake Spectra 2015;; 31 (2): 795–812. doi: https://doi.org/10.1193/110612EQS324M
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Index Terms/Descriptors
- acceleration
- accelerograms
- attenuation
- body waves
- buildings
- Cocos Plate
- earthquakes
- elastic waves
- elasticity
- engineering properties
- Federal District Mexico
- focus
- Fourier analysis
- frequency
- geologic hazards
- ground motion
- guided waves
- igneous rocks
- lacustrine environment
- lake sediments
- lakes
- lava flows
- Mexico
- Mexico City earthquake 1985
- Mexico City Mexico
- Mexico state
- natural hazards
- North American Plate
- plate tectonics
- pyroclastics
- recurrence interval
- risk assessment
- S-waves
- sediments
- seismic waves
- seismicity
- slabs
- soils
- spectral analysis
- subduction
- surface waves
- Trans-Mexican volcanic belt
- tuff
- volcanic rocks
- wave amplification
- Zumpango earthquake 2011
Latitude & Longitude
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