Ciencias,UNAM

Browsing by Author "Pacheco, JF"

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Browsing by Author "Pacheco, JF"

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  • An estimate of shear-wave Q of the mantle wedge in Mexico
    Singh, SK; Pacheco, JF; Iglesias, A; García, D (2006)
    We utilize earthquake recordings at two broadband seismographs located on the coast of the Gulf of Mexico to estimate Q of the mantle wedge. From the data at a station situated in the Laguna Verde nuclear power plant (LVIG), ...
  • Influence of subduction zone structure on coastal and inland attenuation in Mexico
    Singh, SK; Herraiz, M; Ordaz, M; Pacheco, JF; Cruz-Jimenez, H; García, D (2009)
    Although it has been suggested in the past that the attenuation of seismic waves along the Pacific coast of Mexico and towards the continent differs, the subject has been controversial and, as yet, unresolved. Here we ...
  • Inslab earthquakes of Central Mexico: Peak ground-motion parameters and response spectra
    Singh, SK; Herraiz, M; Ordaz, M; Pacheco, JF; García, D (2005)
    We developed equations to predict pseudoacceleration response spectra (5% damping), peak ground acceleration, and peak ground velocity at free-field rock sites for intermediate-depth, normal-faulting inslab earthquakes of ...
  • Inslab earthquakes of Central Mexico: Q, source spectra, and stress drop
    Singh, SK; Herraiz, M; Pacheco, JF; Ordaz, M; García, D (2004)
    We analyze 17 intermediate-depth, normal-faulting, inslab earthquakes of Mexico (4.1 less than or equal to M-w less than or equal to 7.4
  • Q of Lg waves in the central Mexican Volcanic Belt
    Singh, SK; Iglesias, A; Pacheco, JF; Ordaz, M; García, D (2007)
    From seismograms of nine shallow, coastal earthquakes recorded at a pair of broadband stations, we estimate Q of Lg waves in the part of central Mexican Volcanic Belt (MVB) that includes the Valley of Mexico. The two ...
  • Q of the Indian shield
    Singh, SK; Pacheco, JF; Valenzuela, R; Bansal, BK; Dattatrayam, RS; García, D (2004)
    We analyze spectral attenuation of Lg waves to determine Q of the Indian shield. The dataset consists of four earthquakes recorded in the distance range of 240-2400 km. The new estimate, Q(f) = 800f(0.42) (0.1 Hz less than ...