A recent scientific study has raised concerns about the earthquake vulnerability of thousands of residential and commercial structures in Chandigarh and its surrounding areas. The research indicates that local ground conditions, particularly the presence of soft soil, could significantly amplify seismic waves during a major Himalayan earthquake, increasing the risk of damage.
The study, conducted by researchers from the Indian Institute of Technology (IIT) Roorkee and published in a peer-reviewed journal, used microtremor measurements to analyze the seismic hazard in the Chandigarh region. It found that the natural frequency of the soil in many parts of the city matches the resonant frequency of typical multi-story buildings, a phenomenon that can lead to severe shaking during an earthquake.
Chandigarh, located in Seismic Zone IV (High Risk) as per the Indian seismic zoning map, is near the Himalayan frontal thrust, a region known for its potential to generate large earthquakes. The study emphasizes the need for a comprehensive seismic risk assessment and retrofitting of vulnerable structures to mitigate potential losses.
Local authorities have been urged to update building codes and enforce stricter regulations for new constructions. The findings highlight the importance of site-specific soil analysis in urban planning to reduce earthquake risk.
