Landslide Susceptibility mapping of Himalayas

The scientists from the Wadia Institute of Himalayan Geology operating under the Department of Science and Technology carried out a study covering 84 square kilometres in the Lesser Himalayas. According to the study, 15% of the region is highly susceptible to landslides.

Highlights

Mussoorie in Uttarakhand witnessed several landslides recently. The increase in the disaster hazard has led the scientists to map the landslide susceptibility in the region. The study has found that the very high and high landslide susceptible zone lies in areas that are covered by highly fractured Krol limestone.

Around 29% of the region falls under moderate landslide susceptible zone and 56% of the region fall under very low landslide susceptible zone.

Key findings of the study

The study says that the possible causative factors of the landslides are land use, road cut drainage, curvature, elevation.

What are the Lesser Himalayas?

There are three major ranges in the Himalayas. They are the Himadri, Himachal and the Shiwalik. The Himachal is called the lesser Himalayas. Himadri is the Greater Himalayas and the Shiwalik is the outer Himalayas.

What is Landslide Susceptibility Mapping?

It is a map that identifies areas that are subject to landslides. It also says what creates the landslides in that particular area.

International Conference on Landslides Risk Reduction and resilience

The National Institute of Disaster Management organized the fist International Conference on Landslides Risk Reduction and resilience in November 2019. The main aim of the conference was to bring the stakeholders and experts together.

Landslides in India

The regions that are highly susceptible to landslides in India are Western Ghats, Easten Ghats, Nilgris, Himalayas, North Eastern hills and the Vindhyas.

National Institute of Disaster Management

It operates under Ministry of Home Affairs and is located in New Delhi. The Institute has been assigned the responsibilities of capacity building, human resource development, documentation, research and policy advocacy in disaster management under Disaster Management Act, 2005.

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