Seismically active structures of the Main Himalayan Thrust revealed before, during and after the 2015 <i>M</i>w 7.9 Gorkha earthquake in Nepal

SUMMARY The Mw 7.9 2015 April 25 Gorkha earthquake is the latest of a millenary-long series large devastating Himalayan earthquakes. It also first time and its aftershocks were recorded by local network seismic stations. In 5 yr following main shock, more than 31 000 located this permanent within ruptured area, including 14 362 events with ML greater 2.5, 7 &amp;gt; 6, one aftershock 7.2 on May 12. 2020, after seismicity rate along fault segments was still about times higher background before earthquake. Several bursts earthquakes, sometimes organized in clusters, have been observed from few days to several years shock. Some these clusters at same place as that happened during decades interseismic stress build-up preceded They vicinity high frequency occurred These heterogeneities contribute persistent segmentation strike, possibly controlled geological structural complexities Main Thrust fault. We suggest pre-2015 revealed seismo-geological influences both coseismic rupture post-seismic relaxation.