PEER Arizona Strong-Motion Database and GMPEs Evaluation, PEER Report 2014-09


This report summarizes the products and results of a study on the collection, processing, and analysis of earthquake ground-motions recorded in Arizona at several recording stations within 200 km from the Palo Verde Nuclear Generating Station in central Arizona. The recorded ground motion in Arizona were compiled and processed according to the Pacific Earthquake Engineering Research Center’s (PEER) record-processing standards. Shear-wave velocity profiles at ten recording stations were measured through the spectral analysis of surface wave dispersion technique. Additionally, “kappa” a measure of energy dissipation in the top 1 to 2 km of the crust, was estimated by three methodologies. The average κ0 (kappa at zero-kilometer distance) was estimated from all sites as 0.033 sec. Finally, response spectra of the recorded ground motions in Arizona were compared with those predicted by the NGA-West2 ground motion prediction equations at large distances in Arizona. The comparison showed that overall the recorded 5% damped response spectral ordinates were over predicted by the NGA-West2 models by a range of 0—0.35 natural log units for events occurring in Central California, and by a range of 0.20—0.7 natural log units for events occurring in Southern California and the Gulf of California.

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Tadahiro Kishida
Robert E. Kayen
Olga-Joan Ktenidou
Walter J. Silva
Robert B. Darragh
Jennie Watson-Lamprey
Publication date: 
June 2, 2014
Publication type: 
Technical Report
Kishida, T., Kayen, R. E., Ktenidou, O., Silva, W. J., Darragh, R. B., & Watson-Lamprey, J. (2014). PEER Arizona Strong-Motion Database and GMPEs Evaluation, PEER Report 2014-09. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA.