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What is glacial burst?
• A glacial outburst is an uncommon event that occurs when the water dammed by a glacier or moraine is released.
• The glacier containing the body of water melts and overflows the glacier.
• Retreating glaciers, like several in the Himalayas, usually result in the formation of lakes at their tips, called proglacial lakes, often bound only by sediments and boulders. If the boundaries of these lakes are breached, it can lead to large amounts of water rushing down to nearby streams and rivers, gathering momentum on the way by picking up sediments, rocks and other material, and resulting in flooding downstream.
• Glacial lake outburst flood (GLOF) events are not unusual, but their impact depends on the size of the proglacial lake that burst, and location.
