Another gigantic misfortune struck Uttarakhand on February 7, 2021 when an ice sheet burst occurred in Chamoli locale of the state. An enormous piece of Nanda Devi glacial mass severed on a cold winter morning of February and fell into a stream, setting off a torrential “Glacial lake outburst flood” (GLOF) in Dhauli Ganga, Rishi Ganga and Alaknanda waterways. More than 150 individuals were dreaded missing after the blaze flood. This is a second huge blow for the Himalayan state after the Kedarnath Tragedy in the year 2013.
NTPC’s Tapovan-Vishnugad hydel venture and Rishi Ganga Hydel Project are the two hydro electric projects that were completely moved & totally washed away alongside five bridges and scores of houses after the waters came gushing in.
What is GLOF? “When glaciers break off, the space underneath them develops into a glacial lake filled with water. The breaking off of the glacial lake is termed as Glacial Lake Outburst Flood (GLOF) or glacial outburst. The glacial outburst occur when the water level of lake rises or when the glacier retreats.” The occurrence of GLOF is very uncommon. Quakes, erosion, volcanic ejections, work of water pressure, or a torrential slide of hefty snow can make the ice sheets or glaciers burst. The glacial mass upheaval can likewise occur after the removal of an enormous water pocket in an icy lake when a nearby icy mass retreats into it.
The reason behind the debacle is as yet being found out, even as a few specialists and analysts have pointed towards the formative activities, asserting that they are hurting the ecology of Uttarakhand. A few specialists additionally link this misfortune to climate change and an earth-wide temperature boost. High temperatures and less snowfall can prompt expansion in dissolving icy masses, causing frigid lake water to ascend past the levels.
A recent report distributed in the Science Advances journal had cautioned that the Himalayan icy masses are dissolving at a disturbing pace and the 2013 Kedarnath-like misfortune may happen once more. The investigation had cautioned that icy masses of the Himalayas have been dissolving twice as quickly since the start of this century because of the environmental change.
The examination depended on satellite perceptions of 40 years across India, Nepal, Bhutan and China. The examination showed that glacial masses have been losing half of their ice each year and the development of chilly lakes had expanded by half since 2000. The
development of expanded number of cold lakes represent an existential danger to Himalayan glacial masses and the waterways moving from close to them.
The causes indicated by certain reports, the flooding may have been brought about by a segment of the Nanda Devi ice sheet severing from the beginning 7 February, delivering the water caught behind the ice, and causing an icy lake upheaval flood. Different reports have recommended that satellite pictures infer that an avalanche may have set off the events. On 8 February 2021, The Times, London, revealed that a flood was brought about by a bit of glacial mass being torn away and causing an avalanche. In satellite pictures, a 0.5 mi (0.80 km) scar is obvious on the slants of Nanda Ghunti, a 20,700 ft (6,300 m) top on the southwestern edge of the Nanda Devi safe-haven, a mass of mountains encompassing the Nanda Devi massif. As indicated by an article in Scientific American, 12 February 2021, information from Planet Labs was deciphered by Dan Shugar, a geomorphologist at the College of Calgary, to recommend that a hanging ice sheet “15 football fields long and five across” had isolated from a mountain and plunged into the Ronti Stray, a feeder of the Rishiganga.
As per BBC News, five researchers from the “Wadia Institute of Himalayan Topography”, Dehradun, India flew over the site in a helicopter, took photos, and accumulated other information; they consider the hanging glacial mass that broke and dove into the Rishiganga bowl, to have been connected to an auxiliary pinnacle, Raunthi, 5,600m (18,372ft), just beneath Nanda Ghunti. As indicated by Dr. Kalachand Sain, head of the Wadia Organization, man-made climate change is the main consideration in the fast freezing and defrosting of ice that causes glacial mass to fracture
As indicated by The New York Times, researchers had cautioned the Public authority of India for a long time that the Himalayas had been warming at a hazardously high rate and the district’s biological system had gotten excessively actually presented to the perils of improvement projects. Dr Ravi Chopra, the overseer of People’s Science Institute in Uttarakhand and an individual from a logical board of trustees delegated by India’s High Court in 2014, had exhorted against building dams in the par glacial zone, for example waterway valleys in which the floor is higher than 7,000 feet, however the Public authority of India dismissed their objections. As indicated by Dr Chopra, both the hydro-electric force projects that were washed away in the flood were developed in this zone. As per another board of trustees drove by Dr Chopra and designated by India’s High Court in 2020, as per the New York Times, the Public authority of India had assembled 500 miles of expressway—much 33 feet wide—in the slopes of Uttarakhand to improve ways to deal with Hindu sanctuaries in the high Himalayas, abrogating the counsel of its own experts, The headman of Reni, the town most unfavorably influenced by the flood wherein the 13-megawatt Rishiganga hydro-power project was washed away, expressed that the town inhabitants expected that the impacting of the stones during the hydro-power dam’s development would welcome on hazardous landslides. “We used to hear impacting and see the stones move,” he said. “At the point when this task was under development, half of our town slid. We mentioned to be moved from here to somewhere else. The public authority said they would do it, yet it never happened.”
This event led numerous towns to be cleared prior as authorities purged two dams farther down the waterway to prevent the floodwaters from arriving at towns of Haridwar and Rishikesh. Two C-130J Super Hercules with 3 groups of Public Calamity Reaction Power (NDRF) have been conveyed in the salvage mission. As indicated by the chief general of the NDRF, the salvage endeavors could take up to 2 days. Crisis teams figured out how to safeguard 16 laborers who had been caught inside a passage. Another 35 to 40 laborers are believed to be caught in a second tunnel. At the Tapovan Vishnugad Hydro-power undertaking site which is being worked by the NTPC 5 km (3.1 mi) downstream, rescuers have been endeavoring to give in their manner into a passage to safeguard in any event 30 authorities who were supposed to be trapped.
An enormous rescue has been on since 7 February night to save almost 40 individuals known to be caught inside a passage, after the glacier burst in morning. “Suffocation due to suffocating” was the reason for death of the nine individuals whose bodies were recuperated from the passage at NTPC’s hydro-power project site in Tapovan zone of Uttarakhand’s Chamoli region and they would have kicked the bucket inside thirty minutes after slush entered the passage, as indicated by the locale’s Central Clinical Official Dr G S Rana. During the posthumous of six bodies recuperated from the passage seven days after the blaze flood, specialists have discovered water and mud inside the lungs and stomach of the deceased.
As the death toll rises to 56 and over 150 are declared missing, this entire episode led to the chief minister of Uttarakhand to announce 4 Lakh compensation for the relatives of the deceased. An ex gratia payment of 2 Lakhs & Rs. 50,000 was announced by Prime Minister Modi for the kin of the deceased & the injured respectively.