Probabilistic Seismic Hazard Assessment at Bedrock Level Using a Logic Tree Approach: A Case Study for Odisha, an Eastern State of India

The Indian peninsular region has witnessed moderate to large earthquakes in the recent past. The present work demonstrates probabilistic seismic hazard assessment at the bedrock level using six ground-motion prediction equations with a logic tree approach considering Odisha state as a case study. Regional rupture characteristics are established for the tectonic features of the study region. Uniform hazard response spectra are computed for district places. Seismic hazard results are disaggregated for Bhubaneswar, the capital city of Odisha. The results have shown the distribution of seismicity in the state is not in sync with the seismic zone map provided by the Indian code.