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Himalayan 'Cement' Melting: Disaster Risk Soars
13 Oct
Summary
- Warming mountains melt glaciers and permafrost, increasing disaster risks.
- Ice loss rates in the Hindu Kush Himalaya have doubled since 2000.
- Thawing permafrost acts like geological cement, its melt causes landslides.
The Indian Himalayan Region is experiencing severe climate-induced disasters as glaciers retreat and permafrost thaws, a process described as the melting of geological 'cement'. Warming in Asian high mountains is occurring at nearly twice the global average, leading to accelerated ice loss. Since 2000, ice loss rates across the Hindu Kush Himalaya have doubled, significantly increasing instability.
The melting of permafrost, which binds steep rock walls, causes rock avalanches and landslides. This was evident on August 26, when a major ice and rock collapse in Nepal triggered a devastating flash flood. Rising temperatures have also made glaciers more susceptible to melting, creating supraglacial lakes and moulins that destabilize ice sheets.
Addressing these threats requires regional cooperation for real-time data exchange, including satellite and drone surveillance. Acoustic and hydrological sensors could provide early warnings of subsurface movements. Furthermore, a reevaluation of development policies, including a potential ban on construction above defined elevations and rigorous environmental impact assessments for all projects, is crucial.
