Major Cities Worldwide Are Sinking, Satellite Data Reveal
Researchers found land subsidence in 465 cities across 107 countries, with groundwater pumping and uneven sinking putting buildings, roads and flood defenses at risk.
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Major cities worldwide are sinking, satellite data reveal
Land subsidence is the gradual sinking of the ground, which can damage buildings, foundations, and drainage and sewage systems, and may increase flood risks. However, information on land subsidence dynamics remains limited, which makes it difficult for policymakers to identify where risks are intensifying and where urgent intervention may be needed. Previous assessments have often used different methods or time periods, or focused only on small …
Mexican Urbes, with Mexico City at the head, and Southeast Asia have the highest levels of soil subsidence
An international research team analyzed ground subsidence in 465 cities worldwide using satellite radar and found that 7% of the observed areas in Busan, South Korea, are sinking by more than 1 cm annually. This suggests that anthropogenic factors, such as groundwater depletion, can affect ground stability and demonstrates the need for long-term monitoring and systematic urban management policies to prepare for flood risks, particularly in coast…
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BIOENGINEER.ORGSinking Cities Mapped From Space: Global Radar Survey Reveals Where the
A decade of satellite radar data reveals that land subsidence is widespread across 465 major cities worldwide, with hotspots in Southeast Asia, West and Central Asia, and North America, and clear signs that some cities are slowing their descent.
Science Writing.- The phenomenon of cities whose land is sinking occurs in much of the world and a precise study that, among the most affected, are Medan (Indonesia), about 33 millimetres a year, or Torreón (Mexico), about 17 millimetres. The most rapid localized sinking was measured in Mexico City, with some [...] The Medan entrance (Indonesia) and Torreón (Mexico), among the cities most affected by the sinking of the soil was first published i…
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