Relevance: GS Paper 1 (Geography) & GS Paper 3 (Disaster Management) | Source: The Hindu

Context: A recent scientific study has warned of a massive, hidden danger in Uttarakhand’s Himalayas. It highlights a classic “multi-hazard cascade”—a deadly chain reaction where climate change, fragile mountains, and poorly planned construction combine to create a severe disaster risk.

1. Core Concept: What are Hanging Glaciers?

Before understanding the administrative problem, we must understand the geography:

• The Definition: Hanging glaciers are huge masses of ice that cling to very steep mountain slopes or cliff edges.
• The Mechanism: Because the slopes are so steep, the ice does not have a gentle valley to slide down. Instead, as the ice grows heavy, it naturally breaks off and falls as sudden ice avalanches.
• The Danger: This is a natural process. But it turns into a major disaster when these massive ice blocks crash into pilgrim routes or towns located right below the cliffs.

2. Key Findings: The Threat in Alaknanda Basin

Researchers studied the Alaknanda river basin and found alarming data:

• Highly Unstable Ice: They identified 219 hanging glaciers in the region. Sadly, nearly one-third of these are highly unstable and ready to break off.
• The Climate Multiplier: The Himalayas are warming faster than the rest of the world. This rapid heat melts the ice, making the glaciers even weaker and more likely to collapse.
• The Chain Reaction (Flash Floods): If a massive avalanche falls into the river, the ice and debris can temporarily block the river flow. This creates a temporary “ice-dam.” When this weak dam eventually bursts, it triggers a devastating downstream flash flood (just like the tragic 2021 Chamoli disaster).

3. The Administrative Failure: Unplanned Construction

The natural fragility of the Himalayas is only half the problem. Human mistakes are multiplying the danger:

• Ignoring the Risk: The Alaknanda basin is highly prone to earthquakes and landslides. Despite knowing this, massive construction is ongoing.
• Rampant Expansion: Commercial infrastructure (hotels, roads, dams) is expanding aggressively into high-altitude danger zones. Built-up areas have grown from just 8,000 square metres in 2000 to a projected 150,000 square metres by 2030.
• Dangerous Locations: The expansion along the Badrinath-Mana stretch is happening directly under steep, glacier-fed slopes, putting thousands of lives at direct risk.

4. The Way Forward: Administrative Solutions

We cannot stop the glaciers from melting immediately, but we can protect the people. The government must take these targeted steps:

• Targeted Satellite Monitoring: It is too expensive to monitor the entire Himalayas. Instead, the government must use satellites to strictly watch only those highly unstable glaciers that are directly above towns and pilgrim routes.
• Localized Early Warning Systems (EWS): Install specific sensors (like acoustic monitors) in these identified high-risk zones. This will give downstream populations crucial time to evacuate before the flood hits.
• Strict Zoning Regulations: Local district administrations must enforce a strict, non-negotiable ban on any new commercial construction directly in the path of potential avalanches.

Conclusion

Disasters in the Himalayas are no longer just “acts of God.” They are the result of poor planning. To protect human lives, the State must strictly align its developmental goals with the ecological limits of the mountains.

Q.”The looming threat of hanging glaciers in the Himalayas highlights the fatal intersection of climate change and unplanned infrastructural expansion.” Discuss the mechanisms of such hazards in the Alaknanda basin and suggest administrative measures to mitigate the risks. (15 Marks, 250 Words)

Mains Answer Hint:

• Intro: Define Hanging Glaciers simply. Mention the recent study finding 219 such glaciers in the Alaknanda basin.
• Body: * The Mechanism: Explain how climate warming detaches ice, leading to avalanches that block rivers and cause Flash Floods / GLOFs (mention the 2021 Chamoli disaster).
  • Human Factor: Use terms like Unplanned Human Exposure. Mention the massive construction expansion (projected 150,000 sq. m by 2030) in dangerous zones.
  • Governance Linkages: Cite the NDMA Guidelines and the NMSHE.
• Conclusion/Measures: Suggest Targeted Monitoring using satellites, localized Early Warning Systems (EWS), and strict Zoning Regulations to ban construction in danger zones.