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Introduction :-
Glacial Lakes Outburst Floods (GLOFs), are a subject of concern in the Sikkim Himalayan region as several lakes have been formed due to melting of scores of glaciers in the region. In order to prevent any disasters due to outbursts from such lake, a project was started in the South Lhonak Lake where in high density polyethylene (HDPE) pipes have been installed to siphon off water from the glacial lake.
Disaster managers and scientists in Sikkim are siphoning out excess water from lake to prevent it from Glacial Lakes Outburst Floods.Transporting the pipes to high altitudes poses serious challenges. Yaks are used to carry the pipes and other materials to the lake situated at 17,000 ft. The way to the lake is full of steep and narrow passages. Sikkim has installed a Lake monitoring and information System (water level Sensor) at South Lhonak lake. The sensor gives the water level of the lake and also monitored the lake level when there is sudden fluctuation in water level
Glacial Lakes Outburst Floods :-
Floods caused due to outburst of glacial lakes is known as Glacial Lakes Outburst Floods. The moraine wall act as a natural dam, trapping the melt water from the glacier and leading to the formation of a glacial lake. Retreat of glaciers in the wake of global warming is expected to increase the number of glacier lakes and also expand the size of the existing ones. The formation of moraine-dammed glacial lakes and glacial lake outburst flood (GLOF) is major concern in countries such as Bhutan, Tibet (China), India, Nepal and Pakistan.
The Himalayan states, Uttarakhand, Himachal Pradesh and Jammu and Kashmir, are surrounded by about 200 potentially dangerous glacial lakes formed by glacial melt but till date no early warning system is in place to evacuate people in case these lakes breach their thin walls of debris and loose soil.In addition, this process can be further influenced if more glacial lakes are formed due to increase in debris cover and if black carbon (soot) is transported in accumulation areas of the glaciers.
Factors triggering GLOFS :-
Impact :-
Measures :-
By: Shashank Shekhar ProfileResourcesReport error
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