What Are Ice Stupas?
- Definition: Ice stupas are artificial glaciers constructed in cone-like shapes to store winter water in frozen form.
- Name Origin: Inspired by traditional Buddhist stupas due to their iconic dome-like structure.
- Inventor: Engineered by Sonam Wangchuk in Ladakh, India.
Science Behind Ice Stupas
- Gravity-Fed Water Supply:
- Water from glacial streams is diverted using pipelines laid on a hydraulic gradient.
- No electricity or pumps are needed, making it energy-efficient.
- Spraying and Freezing Mechanism:
- Water is sprayed vertically into sub-zero air during winter nights.
- Droplets freeze mid-air and settle over a structural frame, gradually forming the stupa.
- Cone-Shaped Formation:
- The vertical cone shape minimizes surface area exposed to sunlight.
- This reduces melting, preserving the stupa until spring.
- Seasonal Melting for Irrigation:
- As temperatures rise, the ice melts gradually from top to bottom, releasing water slowly.
- Supports irrigation for crops like apples, apricots, barley, and wheat.
Scientific Principles Involved
- Phase Change: Freezing and melting processes store and release energy.
- Latent Heat Storage: Energy is stored in frozen water, released during melting.
- Heat Transfer: Controlled by ice shape and exposure.
- Hydraulic Gradient: Ensures gravity-driven water flow without external energy.
Significance of Ice Stupas
- Climate Adaptation:
- Helps combat glacier retreat and water scarcity in Himalayan regions.
- Agricultural Innovation:
- Allows multiple cropping seasons instead of just one, increasing productivity.
- Sustainable & Low-Tech:
- Community-friendly, cost-effective, and scalable without large infrastructure.
- Disaster Risk Reduction:
- Reduces reliance on rapidly melting glaciers, mitigating flood risks in spring.
