This report summarizes the results of a study of cumulative absolute velocity (CAV) and Japan Meteorological Agency instrumental seismic intensity (IJMA ) with the objectives of (1) analyzing the relationship between IJMA and the standardized version of CAV (standardized CAV) and our variant of this parameter (CAVS ) that includes the operating basis earthquake (OBE) exceedance criteria proposed by the U.S. Nuclear Regulatory Commission for shutting down a nuclear power plant after an earthquake; (2) developing a ground motion prediction equation (GMPE) for CAV S and the geometric mean horizontal component of CAV (CAVGM), and (3) developing a GMPE for IJMA . All of these analyses used the Pacific Earthquake Engineering Research Center Next Generation Attenuation (PEER-NGA) strong moti on database. We explored the relationship between CAVS and I JMA using both the full PEER-NGA database and a subset of that database (the CB08 subset) that we previously used to develop GMPEs for peak ground motion and linear-elastic and inelastic response spectra. We used only the CB08 subset of the PEER-NGA database to develop GMPEs for CAVGM, CAVS and I JMA in order to limit the analysis to those recordings that were considered to be most reliable. Thus far, we have found that CAVGM has less aleatory uncertainty than any of the peak ground motion and response-spectral parameters we have studied and that the aleatory uncertainty associated with CAVS is among the smallest.
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