Glaciers are retreating faster globally due to climate change but they melt more quickly when they flow into a lake than when they end on land, with consequences for water supplies, a new study found on Thursday.
but they melt more quickly when they flow into a lake than when they end on land, with consequences for water supplies, a new study found on Thursday.is the first large-scale, detailed analysis of the phenomenon in mountain glaciers and could help forecast major water shortages and huge flood waves.
As rising temperatures cause the leading edge – the tongue – of a glacier to melt, the retreating ice leaves behind deposits of rock debris. The researchers used European Sentinel-2 satellites, flying over the area every five days in 2017–2019, to track how quickly debris trapped in the surface of the glaciers moved down the valley.
It found that lakes formed in 20 percent of all the Himalayan glaciers analyzed, with important consequences for human and natural populations in the catchment areas.
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