Vikrant Shekhawat : Jun 12, 2021, 06:49 AM
On February 7, 2021, about 200 people were killed or missing due to the accident in Dhouliganga of Chamoli district of Uttarakhand. There was a flood in a very large area. Along with 20 feet deep mud was accumulated. Now, scientists have discovered why this incident happened? How sudden floods in Dhouliganga, Rishiganga and Alaknanda How to avoid Because of the falling glacier on a broken glacier, there was an avalanche and it came to the rivers while breaking the natural lake made from glacier deposited below.The beginning of the accident from Ronti Peak. Here's about half a kilometer wide stone, which was huge ice frozen, it dropped down. In the satellite picture taken on January 1, 2021, there is a small crack in the upper part of the rotty peak. By 5 February 2021, this crack becomes bigger. Due to this crack on February 7, a 500 meter wide stone which was broken in large amounts, it broke. On February 10, you can see the big Tikon stone and the thick sheet of ice in the upper part of the Rotty Peak.Scientists told in their studies that the stones broken above the Rotty Peak, there was a huge amount of snow. Whose weight was not able to co. During this time, there was a crack in stone due to small earthquakes coming to the Himalayan Range. This crack brought a lot of pain. On the Himalayas, the peaks, deep sources, seismic activities etc. are very dangerous. So far the largest incident in the world was in 1970 in Peru. Here Haaskar was avoided. It was the world's largest, dangerous and deadly accident. About 6 thousand people were killed.After this, 4000 people were killed in the accident in Kedarnath in 2013. From 1894 to 2021, there have been 16 major accidents in the Himalayan present in Uttarakhand. It includes flash flood, landslide i.e. landslide, avalanche and earthquake. The terrain of cryosphere ie ice sheets are becoming dangerous by continuously increasing human activities on the Himalayas. Hydropower projects on the Himalayas are suffering from efforts to continuously move towards increasing energy demand, economic development and lo-carbon societies.Large stone broken by 6063 meters high rotting peak on 7 February 2021. This stone collides with the branch of Rotty Gad i.e. a small river located at 5500 meters. This branch is present at an altitude of 1800 meters from the ground. The collision was so emphasized that it felt asleep twice. The first 4 o'clock 51 minutes at 13 seconds and second 4 and 51 minutes at 21 seconds. After that there was a lot of snow because there was a lot of snow. When all this came down, there was a sudden flood in Rishiganga and Dhouliganga. Hydropower projects located in these two rivers were completely ruined.The stones falling below the height of the rotty peak and the speed of avalanche was 205 to 216 kilometers. Because there is an angle of rotty peak 35 degrees. Scientists made digital elevation model (DEM) to understand it. It turns out that the stones broken due to the crack on the rotty peak. It was about 80 meters high ice deposited. The width of this piece of stone was about 550 meters. Now you think that a half kilometer wide stone and above the 80 meter high ice layer falls from a height of 5500 meters, then what will they do?Scientists detected optical feature tracking that eventually this stone will not be so easily broken. So it was revealed that this stone was cracked since 2016. It had started moving from its roots. In the summer of 2017 and 18, there was more movie. Because of this, 80 meters wide crack on the glacier deposited above the stone. It was 80 percent of the stones and 20 per cent snow in the debris. When it gets in the rivers, it broke. Many stones were 20 feet wide. There were also large pieces of snow with them.Because of the water in the rivers, their speed was found and the promotion. On the confluence of Rotti Gad and Rishiganga, 40 meters thickened debris came to meet. It was a turn on which due to the fallen stone and snow wrecked in the water of the river to come down at a fast pace. But due to the deposits of a 700 meter diameter, a 700 meter diameter has become a 700 meter diameter because of the rights of Rotty Gad and Rishiganga River. Which is continuously increasing its size. One kilometer below this confluence was more drift of debris. Here the thickness of the debris is about 100 meters.Scientists of Wadia Institute of Himalayan Geology said that the debris (finely mud, water, snow, stone, wood and tree) came in the accident suddenly, stopped the drift on the confluence of Rishganga and Dhouliganga river. There became a bottle. From this, there was a 150 to 200 meters higher debris. But it did not stay too long. Due to the pressure of the debris coming from above, it broke and demolished the temple located on the northern edge of Dhouliganga.Due to the accident in Chamoli, the dirt came to the rivers, its effect has been seen up to 900 km away. That is to see dirt in the river Ganga till Kanpur. An official of the Delhi Water Quality Board said that after this accident, the water of the Ganga was dirty for 8 days. Because of this, 13.2 MW Rishganga Project and 530 MW of Tapovan Project stalled.The stone which was broken from the rotten peak was 1 kilometer above regional parmefrost. But in the case of temperature below it was less than 0 degree Celsius. While its disorder