Nepal Flood Disaster... Growing 'Glacial Lake' Risks Worldwide

As the death toll from the recent catastrophic floods in Nepal continues to rise, warnings are emerging that climate change is heightening disaster risks in the world's mountainous regions. The growing danger of glacier and mountain slope collapses, as well as the rapid formation and expansion of glacial lakes due to accelerated melting, have been identified as additional sources of risk.

AP Yonhap News

According to coverage by international media outlets including Bloomberg News, The Wall Street Journal (WSJ), and The New York Times (NYT) on September 1 (local time), the precise cause has not yet been determined, but the analysis suggests that the Nepal flood was triggered when portions of glaciers and mountainsides in the high Himalayan region collapsed. Large masses of ice and rock cascaded down into the valleys, sending water, mud, and debris downstream in a torrent that developed into a massive flood.

Separate from this disaster, the retreat of glaciers due to climate change is accelerating, and in the Himalayan mountain region, the increase in glacial lakes is emerging as yet another disaster risk factor. According to a study published in January this year in the international journal Journal of Hydrology, the number of glacial lakes in the Hindu Kush, Karakoram, and Himalayan areas increased by 325 between 2000 and 2022. During the same period, the total area of glacial lakes expanded by 72.58 square kilometers, with the increase being particularly pronounced in the eastern and central Himalayas.

On August 28, Dan McGrath, a professor of geosciences at Colorado State University in the United States, said in an interview with CNN that the high mountain regions of Asia host about 95,000 glaciers, with a combined surface area similar to that of South Korea. He explained that, if the annual mass loss from these glaciers were converted into water and poured over Manhattan Island in New York City, it would exceed a depth of 1,200 feet (approximately 366 meters), enough to submerge even the top of the Empire State Building.

This heightened risk is not limited to Asia. The Andes Mountains in South America are also facing increasing threats. According to a recent report by UPI News, rising temperatures in these mountainous regions have led to a surge in unstable glacial lakes throughout the Andes, exposing Chile, Argentina, and Peru to the risks of large-scale floods and landslides.

Among these countries, Chile stands out as one of those with the greatest risk of glacial lake outburst floods, having more than 26,000 glaciers. Peru also faces significant related risks. Paola Moschella, head of glacier research at Peru’s National Glacier and Mountain Ecosystem Institute (INAIGEM), stated in an interview with Exitosa Radio that there are 528 glacial lakes in Peru with flood risk, of which 58 are classified as high risk.

In Argentina, the region with the greatest danger is concentrated in Patagonia. UPI identified El Chalten—a tourist town—as one of the most critical areas under close observation. It was explained that instability on the slopes of the nearby Cerro Solo is posing a direct threat to Laguna Torre.

Meanwhile, the death toll from the Nepal flood has now reached 1,050. Including 16 fatalities from the Tibet region of China, the total number of deaths has risen to 1,066.

This content was produced with the assistance of AI translation services.