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Bangkok, Thailand—Indian rescuers are searching for over 100 people missing in a flash flood caused by a glacial lake bursting its banks, a risk scientists warn is increasing with climate change.
Glacier melt is often channelled into rivers, but ice or the build-up of debris can form what is effectively a natural dam, behind which a glacial lake builds. Sometimes the dam has been gradually degraded over time, or is ruptured by an event like an earthquake. “The flooding can be caused by glaciers melting or these big rainfall events, we know that’s happening more because of climate change,” said Vargo.“The probability of a lake releasing a GLOF is difficult to accurately quantify without detailed and localised studies,” a study of the problem globally warned this year.
But it also reflects the vulnerability of those populations, who may be poorer and less prepared to deal with the sudden arrival of catastrophic floodwaters.
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