Abstract
Abstract The characteristics of seismic energy attenuation in central and south-central Alaska are described. The data analyzed are short-period seismograms of local earthquakes recorded digitally in 12 bit at 120-Hz sampling rate by permanent stations of the regional network in the study area. First, the coda amplitude decay rate was compared for two depth ranges, 0–22 km and 63–133 km, using the single-scattering model. The results show dependence of Qc−1 on earthquake focal depth in the frequency (f) interval of 1
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