Bhubaneswar's eastern belt faces significant earthquake amplification risk

A comprehensive seismic microzonation study has flagged concerns about earthquake hazard levels in Bhubaneswar's eastern expansion zone, where geological conditions could substantially magnify seismic effects. The research identifies soft soil composition as a primary risk factor, capable of amplifying earthquake-induced ground motion by up to three times compared to bedrock areas.

The study reveals that peak ground acceleration in the affected eastern belt could surpass the limits specified in India's national building code standards. This discrepancy raises questions about the adequacy of current construction guidelines for developments in these vulnerable zones, potentially affecting both ongoing and planned infrastructure projects across the region.

Bhubaneswar, capital of Odisha state, has witnessed rapid urban expansion eastward over the past two decades. The findings underscore the importance of site-specific geotechnical assessments during development planning, as soil characteristics significantly influence how structures respond to seismic forces.

The microzonation study recommends that future construction in the eastern growth belt incorporate enhanced seismic resilience measures. These could include improved foundation design, reinforced structural systems, and stricter adherence to updated building codes that account for local soil amplification effects. Authorities are expected to consider the study's recommendations in reviewing development approvals and infrastructure standards for the region.