We present a set of new regionally-calibrated equations for the prediction of the geometric mean of the horizontal components of 10 amplitude-, frequency response-, and duration-based parameters for shallow crustal earthquakes

2018

We present a set of new regionally-calibrated equations for the prediction of the geometric mean of the horizontal components of 10 amplitude-, frequency response-, and duration-based parameters for shallow crustal earthquakes

2018

- All of the main properties of a ground motion cannot be captured through a single parameter, a number of different engineering parameters has been proposed that are able to reflect either one or more ground-motion characteristics concurrently
- We present a set of new regionally-calibrated equations for the prediction of the geometric mean of the horizontal components of 10 amplitude, frequency response, and duration-based parameters for shallow crustal earthquakes
- These equations supersede previous empirical relationships for Greece since their applicability range for magnitude, and epicentral distance has been extended down to Mw 4 and up to 200 km, respectively, the incorporation of a term accounting for anelastic attenuation has been investigated, while their development was based on a ground-motion dataset spanning from 1973 to 2014
- In all velocity-based and contrary to the acceleration-based parameters, the anelastic attenuation coefficient was found statistically insignificant when it was combined with the geometric decay and the coefficient accounting for saturation with distance
- In the regressions where the geometric decay coefficient simultaneously incorporated the contribution of anelastic attenuation, its increase was found to be much less considerable in the velocity-based than in the acceleration-based parameters, implying a stronger effect of anelastic attenuation on the parameters that are defined via the acceleration time history
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