Time-predictable model applicability for earthquake occurrence in

Abstract. Northeast India and its vicinity is one of the seis-mically most active regions in the world, where a few large and several moderate earthquakes have occurred in the past. In this study the region of northeast India has been consid-ered for an earthquake generation model using earthquake data as reported by earthquake catalogues National Geophys-ical Data Centre, National Earthquake Information Centre, United States Geological Survey and from book prepared by Gupta et al. (1986) for the period 1906–2008. The events having a surface wave magnitude of Ms ≥ 5.5 were consid-ered for statistical analysis. In this region, nineteen seis-mogenic sources were identified by the observation of clus-tering of earthquakes. It is observed that the time interval between the two consecutive mainshocks depends upon the preceding mainshock magnitude (Mp) and not on the fol