Compare the characteristics of Himalayan and Peninsular earthquakes. What explains the greater destructiveness of the former?
Kartavya Desk Staff
Topic: Earthquakes
Topic: Earthquakes
Q1. Compare the characteristics of Himalayan and Peninsular earthquakes. What explains the greater destructiveness of the former? (10 M)
Difficulty Level: Medium
Reference: InsightsIAS
Why the question India’s seismicity spans two contrasting tectonic regimes, and understanding their differences is vital for disaster risk assessment. The question seeks to test conceptual clarity and applied reasoning. Key Demand of the question The demand is to compare the geological and seismic features of Himalayan and Peninsular earthquakes and to explain, with reasoning, why Himalayan ones are more destructive. It requires linking physical geography with vulnerability dimensions. Structure of the Answer: Introduction Note India’s seismic diversity shaped by both plate boundary and intraplate settings. Body Himalayan earthquakes – Active plate collision, shallow focus, frequent high-magnitude quakes. Peninsular earthquakes – Intraplate origin, moderate magnitude, long recurrence intervals, localised effects. Greater destructiveness in Himalayas – Strain accumulation from plate convergence, fragile mountain ecology, secondary hazards like landslides/avalanches, high population density and weak infrastructure, rapid urbanisation in seismic zones. Conclusion Emphasise proactive seismic safety, resilient infrastructure, and preparedness as essential to mitigate inevitable Himalayan megaquakes.
Why the question India’s seismicity spans two contrasting tectonic regimes, and understanding their differences is vital for disaster risk assessment. The question seeks to test conceptual clarity and applied reasoning.
Key Demand of the question The demand is to compare the geological and seismic features of Himalayan and Peninsular earthquakes and to explain, with reasoning, why Himalayan ones are more destructive. It requires linking physical geography with vulnerability dimensions.
Structure of the Answer:
Introduction
Note India’s seismic diversity shaped by both plate boundary and intraplate settings.
• Himalayan earthquakes – Active plate collision, shallow focus, frequent high-magnitude quakes.
• Peninsular earthquakes – Intraplate origin, moderate magnitude, long recurrence intervals, localised effects.
• Greater destructiveness in Himalayas – Strain accumulation from plate convergence, fragile mountain ecology, secondary hazards like landslides/avalanches, high population density and weak infrastructure, rapid urbanisation in seismic zones.
Conclusion
Emphasise proactive seismic safety, resilient infrastructure, and preparedness as essential to mitigate inevitable Himalayan megaquakes.