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Himalaya's ‘hanging glaciers’ can cause disaster risks in Uttarakhand

Posted By: Aditya Gogoi Posted On: Apr 18, 2026Share Article
Himalaya's ‘hanging glaciers’ can cause disaster risks in Uttarakhand
The Himalayas are hanging by a thread. (Representative image)

Himalaya's ‘hanging glaciers’ can cause higher disaster risks in Uttarakhand: Study

Himalaya's ‘hanging glaciers’ can cause higher disaster risks in Uttarakhand: Study

These hanging glaciers has increased the exposure of neighbouring populations and infrastructure to significant risks, especially glacier disasters.

Updated on: Apr 18, 2026 7:58 AM IST By Jayashree Nandi Share via Copy link The rapidly changing climate has weakened swathes of the Himalayan glaciers and formed unstable chunks of ice that hang off steep slopes and can snap, setting off a slew of environmental disasters in Uttarakhand, a new paper has found. The Himalayas are hanging by a thread. (Representative image) The paper – led by the Indian Institute of Science, Indian Institute of Technology Bhubaneswar, and the Defence Geoinformatics Research Establishment – mapped 219 of these chunks, known as “hanging glaciers” in Alaknanda basin. These glaciers occupy steep slopes, with around 30% of them in the Upper Alaknanda basin, including areas such as Uttarakhand’s Badrinath, said the paper, published on Friday in Nature’s Natural Hazards journal.

Rapid settlement growth increases disaster exposure

These hanging glaciers, coupled with a rapid rise in human settlements in the ecology in Alaknanda Basin, has increased the exposure of neighbouring populations and infrastructure to significant risks, especially glacier disasters. Analysis showed that settlements in the basin expanded 616% over the past five decades, contributing to a 57% drop in agricultural land and a 33% drop in barren land. Built-up surfaces are expected to increase from around 8,000sqm in year 2000 to about 152,000sqm by 2030. The number of people expected to be exposed to these risks is projected to grow from about 380 to 8,500 in the same period.

Warming Himalayas accelerating glacier melts

Glaciers in high-elevation alpine environments are particularly sensitive to climate shifts. Warming in the Himalayas has exceeded the global average over the past two decades, shrinking glaciers and cutting off tributary glaciers from their “trunks”. These phenomena can spark off a cascade of disasters, such as the Dharali floods last year, which scientists attribute was triggered at least to some extent by unstable glaciers. “High-altitude regions of the Himalaya are experiencing major changes due to climate change...This investigation provides a unique dataset on hanging glaciers and potential regions which can be affected,” said Anil V Kulkarni, distinguished visiting scientist at the Divecha Centre for Climate Change, IISc. He added that the data is vital for planners to undertake systematic development and improve the safety of mountain communities. The Alaknanda basin contains around 848 glaciers distributed across sub-basins: Mandakini, Pindar, Mena Nala, Nandakini, Vishnuganga, Rishiganga, Dhauliganga and Girthiganga. The basin hosts several pilgrimage sites such as Kedarnath, Badrinath and Hemkund Sahib; major settlements including Joshimath, Chamoli, Tapovan and Mana; trekking routes like the Valley of Flowers, Roopkund and Nanda Devi Base Camp; and hydropower projects such as Vishnuprayag, Tapovan-Vishnugad and Pipalkoti, all located in close proximity to glacierised terrain. A 2023 paper reported 681 avalanche events causing over 3,100 deaths across High-mountain Asia over the past 50 years, including 60 that killed over 1,400 people in the Indian and Nepal Himalayas. The paper cited the 2015 Gorkha earthquake-triggered avalanche and the 2021 Chamoli rock-ice avalanche in Uttarakhand, as examples of disasters triggered by hanging glaciers. “Hanging glaciers have huge potential to induce indirect or secondary hazards. For instance, mass failure from hanging glaciers overhanging glacial lakes can result in surging of the lake’s water and breaching of its dam, leading to a glacial lake outburst flood,” said the paper. ABOUT THE AUTHOR Jayashree Nandi I write on the environment and climate crisis and I believe these are the most important stories of our times. Climate Change Uttarakhand Himalayas Check India news real-time updates, latest news from India and TS Telangana Inter Result 2026, latest at HindustanTime Home/India News/Himalaya's ‘hanging Glaciers’ Can Cause Higher Disaster Risks In Uttarakhand: Study See Less

The rapidly changing climate has weakened swathes of the Himalayan glaciers and formed unstable chunks of ice that hang off steep slopes and can snap, setting off a slew of environmental disasters in Uttarakhand, a new paper has found.

The paper – led by the Indian Institute of Science, Indian Institute of Technology Bhubaneswar, and the Defence Geoinformatics Research Establishment – mapped 219 of these chunks, known as “hanging glaciers” in Alaknanda basin. These glaciers occupy steep slopes, with around 30% of them in the Upper Alaknanda basin, including areas such as Uttarakhand’s Badrinath, said the paper, published on Friday in Nature’s Natural Hazards journal.

Analysis showed that settlements in the basin expanded 616% over the past five decades, contributing to a 57% drop in agricultural land and a 33% drop in barren land. Built-up surfaces are expected to increase from around 8,000sqm in year 2000 to about 152,000sqm by 2030. The number of people expected to be exposed to these risks is projected to grow from about 380 to 8,500 in the same period.

“High-altitude regions of the Himalaya are experiencing major changes due to climate change...This investigation provides a unique dataset on hanging glaciers and potential regions which can be affected,” said Anil V Kulkarni, distinguished visiting scientist at the Divecha Centre for Climate Change, IISc. He added that the data is vital for planners to undertake systematic development and improve the safety of mountain communities.

The Alaknanda basin contains around 848 glaciers distributed across sub-basins: Mandakini, Pindar, Mena Nala, Nandakini, Vishnuganga, Rishiganga, Dhauliganga and Girthiganga. The basin hosts several pilgrimage sites such as Kedarnath, Badrinath and Hemkund Sahib; major settlements including Joshimath, Chamoli, Tapovan and Mana; trekking routes like the Valley of Flowers, Roopkund and Nanda Devi Base Camp; and hydropower projects such as Vishnuprayag, Tapovan-Vishnugad and Pipalkoti, all located in close proximity to glacierised terrain.

A 2023 paper reported 681 avalanche events causing over 3,100 deaths across High-mountain Asia over the past 50 years, including 60 that killed over 1,400 people in the Indian and Nepal Himalayas. The paper cited the 2015 Gorkha earthquake-triggered avalanche and the 2021 Chamoli rock-ice avalanche in Uttarakhand, as examples of disasters triggered by hanging glaciers. “Hanging glaciers have huge potential to induce indirect or secondary hazards. For instance, mass failure from hanging glaciers overhanging glacial lakes can result in surging of the lake’s water and breaching of its dam, leading to a glacial lake outburst flood,” said the paper.

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