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by G.T. Lindley and R.J. Archuleta
Lindley, G.T., and R.J. Archuleta (1993). Variation of Response Spectrum with Tectonic Environment and Focal Depth. SMIP93
Seminar on Seismological and Engineering Implications of Recent Strong-Motion Data, p. 1 - 12.
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Abstract
The variation of response spectral shapes is examined for the 1980 Mammoth Lakes, 1983 Coalinga,
and 1992 Southern California earthquake sequences. Significant variations of the response spectra
are found between earthquakes of the Southern California earthquake sequence and earthquakes of the
Mammoth Lakes and Coalinga sequences. These variations do not correspond simply to variations with
tectonic environment, Variation of response spectral shape with focal depth is found for
microearthquakes, but not for large, potentially damaging earthquakes (M > 6). Response spectral
shapes vary with magnitude and the variation is significant when the difference in magnitude is
approximately 2 or larger.
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