Define GLOF. Mention two causes, two effects and two preventive measures of it.
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The following direct causes of glacial lake outburst floods were documented:
Rapid slope movement into the lake.
Heavy rainfall/snowmelt.
Cascading processes (flood from a lake situated upstream)
Earthquake.
Melting of ice incorporated in dam/forming the dam (including volcanic activity-triggered jökulhlaups)
There are several possible methods for mitigating the impact of Glacial Lake Outburst Flood (GLOF) surges, for monitoring, and for early warning systems. The most important mitigation measure for reducing GLOF risk is to reduce the volume of water in the lake in order to reduce the peak surge discharge.
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