Executive Summary : | Seismic hazard is a crucial component in estimating risk in a region, involving the identification of potential seismic sources, path, and site characteristics. Traditional uncertainty in ground motion parameters is estimated using ground motion prediction equations (GMPEs), which are ergodic and do not consider region-specific variability. A suitable alternative is physics-based hazard analysis, which has gained popularity due to advancements in computational facilities and its ability to render non-ergodic realistic estimates. This work proposes categorizing available slip fields based on inversion techniques, event, and other factors. It also aims to develop a novel model for slip-field, including randomness in slip evolution characteristics through temporal scaling relations and random field theories. Critical parameters will be identified through a sensitivity study. The first attempt to formulate physics-based hazard for India will be made by estimating the corresponding value for Delhi. The refined numerical model for the Indo-Gangetic region will be modified to incorporate region-specific medium heterogeneity, and the newly proposed slip field generation algorithm, refined numerical model for the Delhi region, and physics-based seismic hazard algorithm will be combined to fulfill the proposed objectives. The impact and application of this work are vast, as it benefits understanding seismic scenarios in the Indian context and assists in proper hazard preparedness. The results can also form the basis for planning developmental or retrofitting activities. |