A recent study indicates that all 28 of the most populous U.S. cities are experiencing subsidence, primarily linked to groundwater extraction for growing populations and commerce. This phenomenon poses significant risks of flooding and damage to urban infrastructure. While cities such as New Orleans are well-known for sinking, the study reveals that this issue is widespread. Researchers utilized satellite-based interferometric synthetic aperture radar (InSAR) for more detailed and accurate measurements of ground deformations, highlighting the importance of addressing this growing concern for urban areas.
The research reveals that all 28 of the U.S.'s most populous cities are sinking, largely due to groundwater extraction needed for growing populations and commerce.
Researchers used interferometric synthetic aperture radar (InSAR) to gather granular data, detecting ground deformations to better gauge risks to urban infrastructure.
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