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.