Ice Stupas

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.