Mexico City, one of the world's most populous urban centres, is sinking at an unprecedented rate, according to a startling new study. Researchers warn that if current trends continue, large portions of the city could be submerged by 2050.
A City in Peril
The research, published in the journal Nature, reveals that Mexico City is subsiding at a rate of up to 50 centimetres per year in some areas. This dramatic sinking is primarily caused by excessive groundwater extraction from the ancient lake bed upon which the city was built.
The Science Behind the Sink
Scientists used advanced satellite imaging and ground measurements to track the city's descent over the past decade. Their findings paint a worrying picture:
- The city has sunk approximately 10 metres in the last century
- Some areas are now sinking 2-3 times faster than Venice
- Critical infrastructure is at immediate risk
Implications for the Future
The study's lead author, Dr. Enrique Cabral, warns: "We're seeing irreversible damage to the city's foundation. Without immediate intervention, we could see catastrophic structural failures within our lifetime."
The sinking poses multiple threats:
- Damage to underground utilities and transportation systems
- Increased flood risk during heavy rains
- Potential contamination of water supplies
- Structural instability in buildings
A Global Warning
While Mexico City's situation is particularly severe, researchers note this serves as a cautionary tale for other major cities built on unstable ground, including:
- Jakarta, Indonesia
- Bangkok, Thailand
- New Orleans, USA
The study calls for urgent urban planning reforms and sustainable water management practices to mitigate the crisis.
