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A glacial lake outburst flood (GLOF) is a type of outburst flood caused by the failure of a dam containing a glacial lake. An event similar to a GLOF, where a body of water contained by a glacier melts or overflows the glacier, is called a jökulhlaup .
Luggye (Lugge) Glacial Lake: Gasa District: Lunana Gewog: Luggye first appeared in 1967 atop its glacier. It has a depth of 142 metres (466 ft), and a width of 30 metres (98 ft). Luggye produced a significant GLOF in 1994. [9] [21] [22] [23] Bechung Glacial Lake: Gasa District: Lunana Gewog: Supra-glacial lake. [9] [21] Roduphu Glacial Lake ...
More than half of those living in the shadow of the disaster called glacial lake outburst floods are in just four countries: India, Pakistan, Peru and China, according to a study in Tuesday’s ...
On 7 October 1994, a GLOF from Luggye lake (part of Lunana glacial system) led to over 20 fatalities in Punakha. [1] This disaster, the first of its kind in Modern Bhutan, increased the frequency of glacial-system-surveys by manifold. [1] Evaluation of GLOF hazard has since formed a significant component of glacial expeditions. [1]
[41] Further studies in 2009 indicated the rate of glacial melt in Bhutan was three times the world average, and that over the previous three decades regional temperatures had risen by 2.7 °C (36.9 °F). Satellite imaging also confirmed changes in glaciers and snow peaks, indicating increased runoff and decreased coverage.
Natural events such as landslides or the slow melting of a frozen moraine can incite drainage of a supraglacial lake, creating a glacial lake outburst flood. In such a flood, the lake water releases rushes down a valley. These events are sudden and catastrophic and thus provide little warning to people who live downstream, in the path of the water.
Scientists and government authorities were working on an early warning system for glacial floods at a Himalayan lake in northeast India when it broke its banks this week with deadly consequences.
In geomorphology, an outburst flood—a type of megaflood—is a high-magnitude, low-frequency catastrophic flood involving the sudden release of a large quantity of water. [1] [2] During the last deglaciation, numerous glacial lake outburst floods were caused by the collapse of either ice sheets or glaciers that formed the dams of proglacial ...