ISRO released images of Uttarakhand Glacier Burst.

10 February 2021.


The Indian Space Research Organisation (ISRO) has released the first images of the glacier burst in Uttarakhand.


  • According to the satellite images, the flash floods — reported in Rishi Ganga and Dhauli Ganga river catchment areas are a result of a major snow avalanche near Raini village of Chamoli district.
  •  The power plants located at Raini and Tapovan suffered the maximum damage in the deluge.
  • The images were captured by the space agency’s advanced earth imaging and mapping satellite CARTOSAT-3.
  • CARTOSAT-3 is a third-generation agile satellite with high-resolution imaging capabilities.
  •  A DRDO team is working along with ISRO scientists to ascertain the cause of the tragedy..
  • Scientists are investigating the cause of glacier break to be possibly an avalanche or a release of accumulated water.
  • According to experts climate change may be to blame since warming temperatures are shrinking glaciers and making them unstable worldwide.
  • A portion of the Nanda Devi glacier possibly burst through its banks at Joshimath, triggering an avalanche and a deluge that rippled through the Alaknanda river system in the upper reaches of the Himalayas .
  •  It swept away a small hydroelectric project and damaged a bigger one downstream on the Dhauli Ganga.


  • It is an advanced Indian Earth Observation satellite.
  • The satellite has been built and developed by Indian Space Research Organisation (ISRO).
  •  It replaced the IRS series.
  • The satellite comprises of a panchromatic resolution of 0.25 metres.
  • Thus, it is the imaging satellite having highest resolution in the world.
  • It has Mx of 1 metre with a high-quality resolution.

Uses of CARTOSAT-3

Satellite is used to map the weather, in the cartography or defence, and in the strategic applications

Features of CARTOSAT-3

  • The satellite has a resolution of 25 cm.
  •  It uses 1.2 m optics.

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