Ground Motion Parameters For the 2015 Nepal Earthquake

Abstract

The 25th April 2015 Nepal earthquake is the first major event in the Himalayan orogeny that provides a relatively well recorded dataset. This paper presents a comprehensive analysis of the mainshock and its five major aftershocks through 21 well established ground motion parameters. The analysis is presented for near field stations of the Kathmandu basin and far field stations of the Indo-Ganga basin, including the site response behavior with varying sediment thickness. In addition, a new ground motion model is derived for all the 21 parameters using moment magnitude, rupture distance, site class and sediment depth as predictor variables.