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India News: Team used computer model to recreate deluge for report in 'Science'; confirms avalanche, not glacial lake outburst, caused disaster
The region experienced a humanitarian tragedy on February 7 this year, when a wall of debris and water barrelled down the Ronti Gad, Rishiganga and Dhauliganga river valleys.
Study highlights risks to life in the Himalayas due to climate crisis and ever-increasing development projects in a fragile environment
On 7 Feb 2021, a catastrophic mass flow descended the Ronti Gad, Rishiganga, and Dhauliganga valleys in Chamoli, Uttarakhand, India, causing widespread devastation and severely damaging two hydropower projects. Over 200 people were killed or are missing. Our analysis of satellite imagery, seismic records, numerical model results, and eyewitness videos reveals that ~27x106 m3 of rock and glacier ice collapsed from the steep north face of Ronti Peak. The rock and ice avalanche rapidly transformed into an extraordinarily large and mobile debris flow that transported boulders >20 m in diameter,...
A landslide of rock and ice caused the deadly flood that washed out two hydroelectric power plants in an Indian Himalayan state in February.