[REVISION HISTORY]

Glacial melting and surge risks in High Mountain Asia

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2026-10-13 00:57 UTC → 2026-10-30 07:55 UTC · added ~~removed~~

Research indicates that surging glaciers—characterized by sudden, significant increases in movement speed—pose a major threat to populated areas. While these glaciers represent only 1% of the global total, they account for nearly one-fifth of the world's glacier area. More than half of these high-risk glaciers are concentrated in High Mountain Asia, including the Tibetan Plateau, the Himalayas, and the Karakoram Range. In the Hindu Kush Himalayas, glacial ice loss has doubled since 2000, increasing the risk of Glacial Lake Outburst Floods (GLOFs) for approximately two billion people in South Asia. In Nepal, glacial retreat is expanding high-altitude lakes, particularly in the Kanchenjunga Conservation Area, creating unstable ice dams. A ~~major flood~~ catastrophic glacier collapse at the Nepal-Tibet border in late August 2026, involving water traveling at speeds up to 170 km/h, caused unprecedented destruction in regions like Langtang National Park, ~~destroying roads, bridges, houses, and hydroelectric plants. This event resulted~~ resulting in at least 1,300 deaths and leaving over ~~1,000 deaths.~~ 5,300 people missing. Recent ~~flash floods in Nepal’s Gorkha district, triggered~~ studies warn that Himalayan glaciers are approaching a critical tipping point, with mass loss accelerating by ~~an avalanche-induced blockage or landslide dam breach, destroyed over 35 homes~~ 65 percent compared to a decade ago. In India, nearly 200 glacial lakes are considered high risk, and ~~bridges along~~ experts predict the ~~Budhi Gandaki River. This has prompted climate advocates to demand that~~ region will reach “peak water” by the ~~upcoming COP31 be a ‘Nepal COP,’ focusing on climate finance~~ middle of the century. In Pakistan’s Chitral district, glaciers lost approximately 30.8 percent of their area between 1992 and ~~loss~~ 2022, leading to increased GLOF frequency and infrastructure damage. ~~A study in Scientific Reports notes that built-up surfaces~~ Furthermore, rapid urbanization in Himalayan valley ~~floors increased~~ floors—with built-up surfaces increasing by approximately ~~46%~~ 46 percent between 2016 and ~~2023, leaving~~ 2023—has left roughly ~~293,800~~ 300,000 people living on terrain with less than 50 meters of elevation above watercourses. In Bhutan, glaciologists are testing technology to drain the Thorthormi glacial lake to mitigate GLOF risks to major hydropower infrastructure, such as the Punatsangchhu-I and Punatsangchhu-II projects. in high-risk flood zones.

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