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At every Kilometer there was landslide on Rishikesh-Joshimath highway: Study

10:52 AM Jan 16, 2023 IST | Ground Report
at every kilometer there was landslide on rishikesh joshimath highway  study

In Joshimath, a shocking report has come in amid reports of sinking land and collapsing houses. A study has found that landslides have occurred at 309 locations between Rishikesh and Joshimath.

Landslide on Rishikesh-Joshimath highway

According to a research report submitted for discussion at the European Geosciences Union on January 10, as many as 309 ‘landslides totally or partially blocking the road’ were discovered along the 247-kilometre highway between Rishikesh and Joshimath, an average of 1.25 landslides per km.


During the discussion at the European Geosciences Union on January 10 and the team of Indian and foreign scientists, explaining the study said that apart from natural reasons like rain, road construction and widening could also be the reason behind these landslides. These are often small but cause extensive damage to infrastructure and traffic. The landslides were measured in October last year.

The study by Jürgen Mey, Ravi Kumar Guntu, Alexander Plakias, Igo Silva de Almeida, and Wolfgang Schwanghart was published in Natural Hazards and Earth System Sciences, a peer-reviewed journal.


GPS-based study of landslides

The authors also stated in their study report on the subject: ‘We conducted a systematic study of landslides and derived a statistical model that aims to quantify landslide susceptibility along NH-7 with a high spatial resolution. Our analysis was based on a GPS-based study of landslides while travelling from Rishikesh to Joshimath shortly after anomalously high rainfall.’


The study report also indicated that the construction of roads in the Himalayas was on the rise. In the past five years, 11,000 kilometres of roads have been developed in the Himalayan states. According to data from the National Crime Records Bureau, approximately 160 people have been killed in landslide accidents in Uttarakhand in the past four years.


Google Earth image

The study demonstrated through the images from Google Earth that 21% of the landslides that obstructed the road had already occurred. At the same time, 17.8% of the landslides were expected to be reactivated due to rain, while 60.8% of the landslides could not be detected on Google Earth images.

It has also been said in the study that the construction of roads has increased rapidly in the Himalayan region. In the past five years, 11,000 km of roads have been built in the Himalayan states. According to the study, ‘poor soil conditions in the region, as well as poor grade-cutting practices, have made maintenance of these roads challenging.

The study also cited data from the National Crime Records Bureau. According to this, around 160 people have been killed in Uttarakhand in landslide incidents in the past four years.


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