The frequency of earthquakes appears to have increased in the Indian subcontinent. However, India’s preparedness for mitigating their impact has significant gaps. Discuss various aspects.
Subtopic: Disaster Management · Seismic risk & structural mitigation
How to structure your answer
Introduction: Frame India's seismic exposure (~59% landmass in zones III–V) and the Himalayan plate-collision driver.
Body: (1) why exposure feels higher — tectonics plus rising built-up density, (2) preparedness gaps — code non-compliance, soft-storey buildings, weak retrofitting, last-mile warning, (3) existing framework — NDMA guidelines, IS 1893, NCSeP.
Conclusion: Earthquakes don't kill, buildings do — enforce codes and retrofit.
Written within the word limit
225 words · target 250 words · 11 min
Introduction: Around 59% of India's landmass lies in moderate-to-severe seismic zones III to V — roughly 11% in the highest Zone V — a consequence of the Indian plate pushing beneath the Eurasian plate along the Himalaya. Rising population and unregulated construction make every tremor costlier, even where the underlying frequency is debated.
Why impact appears to be rising: dense, poorly built urban growth in high-risk zones — Guwahati and Srinagar in Zone V, Delhi in Zone IV, and the megacities of Mumbai, Kolkata and Chennai in Zone III — sharply raises exposure, while reservoir-induced seismicity and unplanned hillside cutting add local stress.
Gaps in preparedness:
- Construction: weak enforcement of the IS 1893 seismic code; soft-storey buildings, illegal vertical additions, and almost no retrofitting of older schools and hospitals built before the code matured.
- Systems: limited earthquake early-warning coverage, a thin pool of trained masons and engineers, and patchy seismic microzonation beyond a handful of cities.
- Response: uneven State Disaster Response Force strength and a shortage of search-and-rescue equipment at the district level.
Existing framework: NDMA's earthquake guidelines, the National Building Code, IS 1893 and the National Earthquake Risk Mitigation Project provide clear direction that implementation under-delivers.
Conclusion: Earthquakes don't kill people — unsafe buildings do. Mandatory code compliance, retrofitting of lifeline structures, city-scale microzonation and large-scale mason training would close most of the gap and turn a recurring tragedy into a managed risk.
What an examiner expects to see
- About 59% of India's landmass falls in seismic zones III–V (11% in Zone V, 18% in Zone IV, 30% in Zone III)
- Indian plate subducting beneath the Eurasian plate along the Himalaya drives high seismicity
- High-risk cities: Guwahati and Srinagar (Zone V), Delhi (Zone IV); Mumbai, Kolkata, Chennai (Zone III)
- IS 1893 (Criteria for Earthquake Resistant Design) and the National Building Code are core standards
- Key gap: weak enforcement of seismic codes, soft-storey buildings and illegal vertical additions
- Near-absent retrofitting of pre-code lifeline buildings — schools, hospitals, public structures
- Limited seismic microzonation beyond select cities and patchy earthquake early-warning systems
- NDMA Earthquake Management Guidelines and National Earthquake Risk Mitigation Project as the framework
- Uneven State Disaster Response Force capacity and trained-mason shortage at district level
Concrete cases, schemes and judgments
- 2001 Bhuj (Gujarat) earthquake, magnitude 7.7, with massive building collapse
- 2015 Nepal earthquake felt across north India, exposing Delhi's high-rise vulnerability
- IS 1893 Bureau of Indian Standards seismic design code
- National Earthquake Risk Mitigation Project under NDMA
- Seismic microzonation of Delhi and Guwahati