×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

  • 28 June, 2021

  • Min Read

How to minimize disaster risk for glacial lake outburst floods (GLOF)

How to minimize disaster risk for glacial lake outburst floods (GLOF)

  • Suitably called Earth's “Third Pole”, the Himalayan region is home to the largest ice mass outside of the planet's Polar Regions.
  • The glaciers in the Himalayas are melting at a faster rate creating new lakes and expanding the existing ones.
  • Besides, the rising temperatures and extreme precipitation events make the region increasingly prone to a variety of natural hazards, including devastating glacial lake outburst floods (GLOFs).
  • GLOFs occur when either a natural dam containing a glacial lake bursts or when the lake's level suddenly increases and overflows its banks, leading to catastrophic downstream destruction.
  • For example, in 2013, an avalanche caused the glacial moraine holding back Chorabari Lake in northern India to give way, releasing a sudden torrent of water, boulders, and debris that scoured the river valley below, resulting in the deaths of more than 5,000 people.
  • With climate change, these events are likely to increase in frequency and magnitude throughout the Himalayas.
  • However, the remote, challenging Himalayan terrain and the overall lack of cellular connectivity throughout the region have made the development of early flood warning systems virtually impossible.
  • Temperature and the number of extreme rainfall events are rising at an increased rate because of climate change.

A recent study

  • Satellite-based real-time monitoring of Himalayan glacial catchments would improve understanding of flood risk in the region and help inform an early flood warning system that could help curb disaster and save human lives, says a recent study.
  • This should be the future strategy to reduce the loss of human lives during glacial lake outburst floods (GLOF), said a study carried out by scientists from IIT Kanpur.
  • In their recent work, the Scientists also point out that the surge of meltwater in mountain streams is most commonly caused by cloud-burst events during the monsoon season (June–July–August) time frame.
  • However, the recent (7 February 2021) sudden surge of meltwater in the river tributary of the Ganga, Dhauli Ganga, during the dry season suggests that this time frame needs to be expanded.
  • The catastrophe in the upper Dhauli Ganga basin is linked to processes other than precipitation events, such as snow avalanches, rock landslides, or other unidentified drivers, and therefore determining all of the potential major and minor drivers behind sudden surges of meltwater into headwater streams is vital for understanding the hazard profile of the region.
  • The IIT Kanpur team suggests that efforts to help mitigate GLOF events in the future should include the creation of a network of satellite-based monitoring stations that could provide in situ and real-time data on GLOF risk.

Source: PIB


Operation 'Megha Chakra' on Child Sexual Abuse

Operation 'Megha Chakra' on Child Sexual Abuse The "Megh Chakra" operation is being carried out in response to inputs from Interpol's Singapore special unit based on the information obtained from the New Zealand authorities. The Central Bureau of Investigation (CBI) is waging a nationwide campaign against the dissemina

World Tourism Day and India’s status

World Tourism Day and India’s status Every year on September 27, people all over the world celebrate World Tourism Day. This year, it will take place in Bali, Indonesia. “Rethinking Tourism” is the theme for 2022. ??????? What are the Main Ideas? Since 1980, September 27 has been observed as World Tourism Day

Jaldoot App & Groundwater Status in India

Jaldoot App & Groundwater Status in India The "JALDOOT App and JALDOOT App e-brochure" was recently released by the Ministry of Rural Development to better measure groundwater levels. ??????? About JALDOOT app  The Panchayati Raj and the Ministry of Rural Development collaborated to create the JALDOOT app.

Group of Four (G4) on UNSC Reform

Group of Four (G4) on UNSC Reform Under the auspices of The Group of Four (G4), the External Affairs Minister of India met with his counterparts from Brazil, Germany, and Japan. Details about the news G4 discussed concerns pertaining to the UN Security Council reform during a meeting that took place alongside the 77th session of the

Draft Indian Telecommunication Bill 2022

Draft Indian Telecommunication Bill 2022 To control Internet-based OTT (Over-The-Top) telecom services, the Department of Telecommunications (DoT) recently announced the draught Indian Telecommunications 2022 Bill. ?????????????? What are the Draft Bill's Main Points? The Indian Telegraph Act, 1885, Indian Wireless Telegraph

Toppers

Search By Date

Newsletter Subscription
SMS Alerts