Groundwater Overuse Causes Land to Sink in Indian Cities
A new study from Virginia Tech reveals that thousands of buildings and millions of people are at risk due to sinking land in India.
According to Susanna Werth, assistant professor of geosciences and co-author of the paper published in Nature Sustainability, groundwater overuse is a critical driver of the problem.
When cities pump more water from aquifers than nature can replenish, the ground quite literally sinks.
The research team used satellite radar data from 2015-2023 to assess ground sinking in major Indian cities, including New Delhi, Mumbai, Chennai, Kolkata, and Bengaluru, covering over 13 million buildings and nearly 80 million people.
The study found that the overexploitation of groundwater is directly linked to structural weakening in urban areas, posing significant risks to cities.
Author's summary: Groundwater overuse causes land to sink in Indian cities.
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