Slope Movement Tracked Near Trishuli River Ahead of Major Avalanche
What happened
A study utilizing NASA-ISRO Synthetic Aperture Radar imagery found unusually high slope movement north of Langtang Lirung before Nepal’s August rock-and-ice avalanche. Researchers estimated the debris flow moved about 99 million cubic meters of rock and ice, damaging roads, bridges, tunnels, and buildings along the Trishuli River system. The timing of the failure is contested, with the study assigning it to August 26, while the International Centre for Integrated Mountain Development suggests the failure occurred the day before.
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Why it matters
The event involved a massive debris flow that caused significant damage to critical infrastructure, including roads and bridges, along the Trishuli River system. This damage raises concerns regarding regional stability and the costs associated with recovery and infrastructure repair in Nepal.
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Who's involved
- Indian Space Research OrganisationUsed satellite imagery to monitor the Trishuli River system
- Trishuli RiverThe river system that sustained damage from the debris flow
- NepalThe country where the rock-and-ice avalanche occurred
Who could feel it
Possible knock-on effectsThese are possibilities Brind reasoned out, not predictions, and not advice. Most are not stated in any report.
- Rasuwa DistrictSpeculative
Rasuwa District might face increased costs and disruption due to damage to infrastructure in the Trishuli system
- Government of NepalSpeculative
The Government of Nepal may face increased fiscal burden and funding needs related to infrastructure repair
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The entities involved
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Indian Space Research Organisation
Indian national space and aeronautics agency
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Trishuli River
river in Nepal
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