1999 Volume 1 Pages 51-56
The correlation of the new J.M.A. instrumental seismic intensity with the former J.M.A･Seismic intensity and ground motion parameters is examined. The 215 strong-motion records with the intensity of 0 to 7 are used for the analysis. The instrumental seismic intensity computed from the records agrees well with the former seismic intensity determined from human response or observation of damage. The instrumental intensity shows slightly higher correlation with peak ground velocity than peak ground acceleration, and shows highest correlation with the parameters such as the product of the peak velocity and the peak acceleration.
