NGA‐West2 Ground Motion Model for the Average Horizontal Components of PGA, PGV, and 5% Damped Linear Acceleration Response Spectra

We used an expanded PEER NGA‐West2 database to develop a new ground motion prediction equation (GMPE) for the average horizontal components of PGA, PGV, and 5% damped linear pseudo‐absolute acceleration response spectra at 21 periods ranging from 0.01 s to 10 s. In addition to those terms included in our now superseded 2008 GMPE, we include a more‐detailed hanging wall model, scaling with hypocentral depth and fault dip, regionally independent geometric attenuation, regionally dependent anelastic attenuation and site conditions, and magnitude‐dependent aleatory variability. The NGA‐West2 database provides better constraints on magnitude scaling and attenuation of small‐magnitude earthquakes, where our 2008…

• CD
  California Department of Transportation
• CE
  California Earthquake Authority