16:32 Himalaya glacier fracture expert: warming accelerates glacier melting



The South Dadevi Glacier in the Himalayas of India broke on the 7th, breaking through the dam and causing floods. Experts pointed out that global warming and rising temperatures may accelerate glacier melting.  (Associated Press)

The South Dadevi Glacier in the Himalayas of India broke on the 7th, breaking through the dam and causing floods. Experts pointed out that global warming and rising temperatures may accelerate glacier melting. (Associated Press)

2021/02/08 16:32

[Real-time news/comprehensive report]The Nanda Devi Glacier in the Indian Himalayas broke without warning on the morning of the 7th, breaking through the hydroelectric dam in the territory and causing flooding. Experts pointed out that this incident may be caused by global warming and rising temperatures accelerating glacier melting.

According to comprehensive foreign media reports, Manish Mehta, a scientist at the Wadia Institute of Himalayan Geology, said that the event on the 7th was an anomaly. The glaciers usually remain frozen in winter. Seasonal flooding is usually caused by avalanches or landslides, but this event does not seem to be the case. In the case of climate warming since the 1990s, the accelerated melting of glaciers may be related to rising global temperatures.

Mehta pointed out that the glaciers in the Himalayas are melting faster than anywhere else in the world. Studies have shown that the 8 glaciers in the upper reaches of the Rishiganga that caused flooding have reduced their ice volume by 10% in 30 years, the team draws The extent and dynamic changes of glaciers in the Nanda Devi and Rishigenga regions show that most glaciers are shrinking.

According to a report released in 2019, due to climatic factors, the melting rate of Himalayan glaciers has doubled compared to the beginning of this century. A study published in the journal Science Advances in June 2019 showed that glaciers may lose up to a quarter in the past 40 years, and temperature rise is the culprit.

Studies have found that since 2000, the Himalayas have melted more than 1.5 feet (approximately 45 cm) of ice every year. Facing mild warming, from 1975 to 2000, the glaciers in the same area melted about 25 cm of ice every year. Ice, after the warming in 2000 became more pronounced, glaciers melted at a double speed.

Researchers pointed out that Asian countries burn a lot of fossil and biofuels, soot is emitted into the sky, and eventually falls on the surface of the glacier, accelerating the melting of the glacier after absorbing solar energy. Researchers say that about 800 million people depend on seasonal runoff from the Himalayas glaciers for irrigation, power generation and drinking water. At present, glaciers are melting rapidly, increasing runoff when the weather is warm, but experts estimate that as the glaciers melt, this situation may gradually disappear within a few decades, which will eventually lead to water shortages.



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