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The study reveals that many cities around the world are experiencing gradual land subsidence, and averages conceal significant disparities between regions. Some areas are sinking faster than others, increasing flood risks, especially as sea levels rise and rainfall increases. The research shows that Asian cities and developing countries are experiencing higher rates of subsidence, with some places like Jakarta sinking at rates of up to 7 centimeters annually. This causes nearly daily floods in low-lying neighborhoods due to the interaction between land subsidence, tidal inflows, and river flooding. The land subsidence is primarily attributed to excessive groundwater extraction. Despite measures to regulate water usage, limited water infrastructure and continued reliance on wells complicate solutions. Experts emphasize the importance of detailed monitoring of subsidence within neighborhoods and integrating these findings into urban planning and flood management strategies to reduce risks associated with uneven land sinking in coastal areas and major cities.
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