Understanding the climate control on landslide distribution in the North-western Himalaya

Pohti, Deki (2022) Understanding the climate control on landslide distribution in the North-western Himalaya. Masters thesis, Indian Institute of Science Education and Research Kolkata.

Text (MS dissertation of Deki Pohti (17MS216)) 17MS216_Thesis_file.pdf - Submitted Version Restricted to Repository staff only Download (3MB)

Abstract

The capacity of climate to affect disaster has been of significant interest to scientists. The Himalayan front is an unusual high landslide hazard zone, particularly during the rainy summer monsoon season. The Indian monsoon also plays a crucial role in creating landslides in the Himalayas. Rising mountain peaks could affect local weather, but local climate also affects the topography. The majority of landslide mapping is done utilizing the Remote sensing method. There is a substantial connection between Slope, Local relief, and Ksn. Since Ksn is an uplift function, a higher elevation shows uplift and high relief with steep topography. This region is charted out, and we see multiple landslides occurring in this region. This Himalayas region exhibits a dense network of extensional fractures and cleavages in the bedrock. We see recordhigh precipitation accumulation in 3000-4000m ASL, which means that throughout the monsoon, rainfall was deposited, and pore pressure increases stress in the fractures.

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