Empirical Green's Functions Modified by Attenuation for Sources Located at Intermediate and Far Distances from the Original Source |
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Authors: | Miguel A. Jaimes Mario Ordaz |
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Affiliation: | Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria , Delegación, Coyoacán, México |
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Abstract: | We present a scheme to modify empirical Green's functions by attenuation considering: (1) geometrical spreading; (2) decay in high frequency; (3) regional attenuation; and (4) phase of the signal. The accelerograms computed with the proposed simulation method are compared, in time and frequency domains, with strong ground motions from subduction and intermediate-depth earthquakes recorded in Mexico. It is shown that this simple empirical Green's functions technique can synthesize both the shape and amplitude of the response spectra in the site, considering a postulated seismic source located at different distances from the original one. |
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Keywords: | Subduction Intermediate Depth Mexico City Strong Ground Motion Attenuation Empirical Green's Functions |
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