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Disaster Management
Pradeep Kumar

24/03/21 10:25 AM IST

Glacial Burst

In news

National Disaster Management Authority (NDMA) has prepared the revised National Disaster Management Plan (NDMP)- 2019.

Guidelines
  • NDMA has also issued guidelines on Management of Glacial Lake Outburst Floods in October, 2020. 
  • The guidelines, inter-alia, contain roles and responsibilities, including actions to be taken by various stakeholders,  which include agencies of Central and State Governments, for disaster risk management for GLOF. 
  • Government of Uttarakhand has also constituted a Committee to review the Glacial Natural Lakes and its effects.
Glacial lake outburst flood
  • 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.
  • The dam can consist of glacier ice or a terminal moraine.
  • Failure can happen due to erosion, a buildup of water pressure, an avalanche of rock or heavy snow, an earthquake or cryoseism, volcanic eruptions under the ice, or massive displacement of water in a glacial lake when a large portion of an adjacent glacier collapses into it.
Source: PIB

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