Gurjar, NarsiramNarsiramGurjarBasu, DhimanDhimanBasu2025-08-312025-08-312022-12-0110.1007/s00024-022-03148-z2-s2.0-85139128814https://d8.irins.org/handle/IITG2025/25821Probabilistic seismic hazard assessment of North-East India is carried out considering the GMPE rule and framework developed in the companion paper to account for the propagation of epistemic uncertainty. Seismic hazard is characterized in terms of weighted mean and fractile representation using a logic tree approach. Target conditional spectra with different conditional time periods are estimated by two methods: considering GMPE-specific generalized causal rupture and all contributing causal rupture scenarios. Results are reported with 2475- and 475-year return periods. The ratio of fractile to weighted mean representation of hazard is proposed as an alternative viewpoint of the importance factor used in seismic design.falseconditional spectra | epistemic uncertainty and logic tree | importance factor | North-East India | PSHA | weighted mean and fractile hazardsArticle142091364341-4370December 20226arJournal7WOS:000865672800001