| AbstractWe fit an -2 model to response
spectra from eight recent Greek earthquakes ranging in size from
M = 5.8 to M = 6.9. The diminution parameter 0 was determined for each
site, with a value near 0.06 for a typical soil site. The stress
parameter () showed little variation from
earthquake to earthquake and had a mean value of 56 bars over all
earthquakes. Predictions of peak velocity, peak acceleration, rupture
duration, and fault length using the derived stress parameters are
consistent with observations. Frequency-dependent site amplifications
were included in all estimates; the combined effect of amplification and
attenuation had a maximum value close to a factor of 2.5 for a typical
soil site, relative to the motions at the surface of a perfectly elastic
uniform half-space composed of materials near the source. The results
form the foundation for predictions of strong motions in Greece for
distances and magnitudes other than those for which data are
available.Return to Table of
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