Automatic analysis of the Gorkha earthquake aftershock sequence: evidences of structurally segmented seismicity

International audience; We present the first 3 months of aftershock activity following the 2015 April 25 Gorkha earthquake M w 7.8 recorded on the Nepalese Seismic network. We deployed an automatic procedure composed of three main stages: (1) coarse determination of the P and S onsets; (2) phase association to declare events and (3) iterative addition and refinement of onsets using the Kurtosis characteristic function. In total 9188 events could be located in the Kathmandu region with the majority having small location errors (