Dan Shugar, a geomorphologist at the University of Calgary, and his colleagues did not set out to take a global census of glacial lakes. Shugar and his collaborators measured how the number and size of glacial lakes evolved from 1990 through 2018. Some glacial lakes sit in bowl-shaped depressions bordered by glacial moraine, the often unstable rocky rubble left behind by a retreating glacier. When moraine collapses, glacial lake water can course downslope in an outburst flood. “We hope that it allows governments to see where the hot spots might be for glacial lakes growing in the future,” he said.

Source: bd News24 September 03, 2020 11:15 UTC