FREQUENT LANDSLIDES IN THE LANDSLIDES IN THE HIMALAYAS THAN IN WESTERN GHATS.

UPSC GS MAINS IMPORTANT QUESTIONS

Bring out the causes for more frequent landslides in the Himalayas than in Western Ghats. 


Landslides are mass movement of soil or rocks along the slopes of mountains triggered by various natural and anthropogenic causes.


 The Himalayan mountain system is among the youngest tertiary fold mountains in the world. The Himalayas have been created by interaction of convergent boundary between Indian and Eurasian plate. 



The mountain building process of Himalayas form a highly unstable mountain system which is subjected to tectonic activities. Tectonic movement increases the incidence of earthquake which in turn increases the chances of landslides.



In contrast, Western Ghats are older block mountain forming a stable mountain system much older than the Himalayas. Western Ghats are located on the stable part of the Indian plate i.e  Deccan plateau and the movement of Indian Plate does not affect Western Ghats.




The Himalayas are characterized by high peaks, steep slopes and heavy rainfall and snowfall which increase the vulnerability of landslides. Whereas Western Ghats are eroded and denuded with gentle slope on the eastern side. Also there is no snowfall and very little rainfall on the leeward side of the mountain. Therefore there are very few landslides in the 
Western Ghats. 






Unplanned constructions in the Himalayas, shifting cultivation, growth of industries and tourist influx in the region has also increased the vulnerability of landslides in the Himalayas.


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