As glaciers melt and pour massive amounts of water into nearby lakes, 15 million people across the globe live under the threat of a sudden and deadly outburst flood, a new study finds.
Scientists say so far it doesn’t seem likehas made those floods more frequent, but as glaciers shrink with warming, the amount of water in the lakes grows, making them more dangerous in those rare situations when dams burst.
“In a warming world we certainly expect more and larger glacial lakes,” Shugar said in an email. “But the threat that these lakes might pose critically depends on where people are living and what their vulnerabilities might be." The trouble is that scientists are focusing too much attention on the Pakistan, India, China and the Himalayas, often called High Mountain Asia, and somewhat ignoring the Andes, Robinson said. The second and third highest risk basins are in Peru's Santa basin, and Bolivia's Beni basin, the paper said.
India ranks high in the threat list not so much because of the physical setup but because of “a huge number of people downstream.”
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