Predictive model for Arias intensity in northeastern region of India

This study presents a development of attenuation relationship for Arias intensity for Northeastern region of India. The attenuation relationship for Arias intensity is developed in terms of magnitude of seismic event (M), source distance of the earthquake (R) using two step regression analysis. The strong motion dataset is divided into two categories i.e. training dataset and validation dataset. Training dataset is used to calculate regression coefficients and validation dataset is used to examine the efficiency of predictive equations. The developed attenuation relationship for Arias intensity is compared with previously developed attenuation relationships. The comparison shows that the developed equation is efficient for Northeastern region of India.