Tracking 3 Decades of Dramatic Glacial Lake Growth

The video discusses the changing landscape of the region known as the planet's third pole, highlighting the retreat of glaciers and the formation of new glacial lakes. NASA's High Mountain Asia program conducted a global study using satellite images to analyze glacial lake boundaries over three decades, finding a 48% increase in global glacial lake volume. The study reveals that smaller lakes are growing faster and appearing at higher elevations, posing potential risks to tourism, infrastructure, and communities downstream. This research is crucial for understanding global cryosphere changes.

What is the 'third pole' of our planet known for?

• Its iconic and challenging terrain

• Its tropical climate

• Its vast deserts

• Its dense forests

What has been a significant consequence of retreating glaciers worldwide?

• Decrease in sea levels

• Formation of new deserts

• Expansion of polar ice caps

• Increase in the number and size of glacial lakes

What technology is used by researchers to study glacial lake boundaries?

• Underwater cameras

• Landsat satellite images

• Drones

• Weather balloons

By what percentage did the global glacial lake volume increase according to the study?

• 75%

• 60%

• 48%

• 25%

Why is understanding the growth of glacial lakes important?

• To improve agricultural practices

• To predict volcanic eruptions

• To assess impacts on tourism, hazard risk, and infrastructure

• To develop new fishing techniques