Relationships Between instrumental Ground Motion Parameters, and Modified Mercalli Intensity in Guerrero, Mexico

Abstract eng:
This paper presents regression relationships between Modified Mercalli Intensity (MMI) and peak ground acceleration (PGA), and between MMI and peak ground velocity (PGV), for ten Mexican Pacific earthquakes. Correlations were developed for the MMI range of III≤ IMM ≤ IX. When these relationships are compared with others correlations of California reported by others investigators, we found significant differences. Thus, PGA relationship are higher than those obtained in this study. But PGV relations are similars in higher intensities. In order to estimate expected response spectra for the July 18, 1957, Guerrero Earthquake, period dependence was associated, using results of regressions of observed response spectra with MMI, from accelerations from ten earthquakes.

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