Source parameters of the Orizaba earthquake of august 28, 1973
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Se resume la teoría y la metodología con las cuales se pueden estimar parámetros focales de un temblor a partir de señales sísmicas. Se promedian 11 espectros de onda P (usando registros de corto y largos periodos por cada estación) y se combina con 11 espectros de onda G2 para definir el espectro promedio de la fuente entre periodos de 200 seg y 0.5 seg del temblor de Orizaba. El momento sísmico de este temblor de (Mb≈6.7) se estima como 4.8 10₂₆ dina cm. La frecuencia de la esquina es 0.1 cps, a partir del cual se estima el radio de la fuente como 13 km con una caída de esfuerzo de 95 bar.
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