DEVELOPMENT OF GROUND MOTION PREDICTION EQUATION FOR HIMALAYAN REGION

Abstract

For the Indian Himalayan region, an attenuation relationship for peak horizontal ground acceleration has been established. 424 peak ground horizontal accelerations from 68 earthquakes (3.1 ≤ Mw ≤7.8) that were detected by strong-motion arrays in India make up the database. A stratified regression model with two steps is used in this analysis. The attenuation relationship proposed is. Log (PGA) = 0.843 + 0.4136M – 1.009(X + e^0.1655M) ± 0.902 Where PGA is the peak ground acceleration (g), M is the magnitude, and X is the hypocentral distance from the source. The residual sum of squares is 53.480, standard error of proposed relationship is 0.90.