GS 1 · 2016Physical Geography12 Marks

Q7.“The Himalayas are highly prone to landslides.”Discuss the causes and suggest suitable measures of mitigation.

Directive: Discuss12 marks

Introduction

The Himalayas, as young, tectonically active fold mountains, exhibit fragile geology, steep slopes, and high seismicity, rendering them highly prone to landslides.

Causes of Landslides

Natural Factors
  • Heavy rainfall, cloudbursts, and glacial lake outburst floods (GLOFs) saturate slopes.
  • River erosion, especially toe cutting, destabilizes mountain bases.
Anthropogenic Factors
  • Unscientific road construction, tunneling, and quarrying disrupt slope stability.
  • Deforestation, unplanned urbanization, and hydropower projects remove natural anchors and increase geological stress.

Measures for Mitigation

Structural/Engineering
  • Constructing retaining walls, gabion walls, and wire mesh for slope stabilization.
  • Implementing proper drainage systems and bio-engineering techniques.
Non-structural/Policy
  • Developing early warning systems and strict land-use planning.
  • Promoting afforestation, public awareness, and stringent building codes.

Conclusion

An integrated, multi-stakeholder approach, combining scientific research, policy implementation, and community participation, is crucial for sustainable development and effective landslide risk reduction in the Himalayas.

128 words · target ~150