NGA Ground Motion Model for the Geometric Mean Horizontal Component of PGA, PGV, PGD and 5% Damped Linear Elastic Response Spectra for Periods Ranging from 0.01 to 10s

Abstract

We present a new empirical ground motion model for PGA, PGV, PGD and 5% damped linear elastic response spectra for periods ranging from 0.01–10 s. The model was developed as part of the PEER Next Generation Attenuation (NGA) project. We used a subset of the PEER NGA database for which we excluded recordings and earthquakes that were believed to be inappropriate for estimating free-field ground motions from shallow earthquake mainshocks in active tectonic regimes. We developed relations for both the median and standard deviation of the geometric mean horizontal component of ground motion that we consider to be valid for magnitudes ranging from 4.0 up to 7.5–8.5 (depending on fault mechanism) and distances ranging from 0–200 km. The model explicitly includes the effects of magnitude saturation, magnitude-dependent attenuation, style of faulting, rupture depth, hanging-wall geometry, linear and nonlinear site response, 3-D basin response, and inter-event and intra-event variability. Soil nonlinearity causes the intra-event standard deviation to depend on the amplitude of PGA on reference rock rather than on magnitude, which leads to a decrease in aleatory uncertainty at high levels of ground shaking for sites located on soil.

Post-Earthquake Recovery of a Community and Its Electrical Power Supply System

“…The intensity of shaking at the location of each component is measured using peak ground acceleration and peak ground velocity computed using the NGA ground motion model proposed in [19]. The temporal distribution of earthquake recurrence is determined using a Gutenberg-Richter recurrence law, with a=4.4 and b=1 [21].…”

Record-to-Record Variability in the Seismic Response of Rc Walls Buildings Subjected to Ground Motions Matched to the Conditional Spectrum

“…A limitation of this is that the GMPE used for constructing the conditional spectra [20] is inconsistent with those used in the probabilistic seismic hazard analyses (PSHA). Furthermore, hazard is defined in terms of envelope spectral acceleration, whereas it is herein assumed to correspond to a random component of spectral acceleration.…”

Seismic hazard disaggregation in performance‐based earthquake engineering: occurrence or exceedance?

“…The consideration of all causal earthquakes is carried out as per Lin et al [3]. All parameters are set to be consistent with the PSHA, including the use of the Campbell and Bozorgnia-2008 GMPE [16].…”

“…A uniform depth distribution of shallow crustal seismicity is assumed and earthquake ruptures are generated according to [15]. The ground motions for the site are computed using the model of Campbell and Bozorgnia [16], and the default sediment depths are assumed to be appropriate in this model.…”