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IIT Study: Storms Contaminate Deep Aquifers
6 Oct
Summary
- Cyclones contaminate groundwater over 100 meters deep.
- Study focused on Sundarbans' vulnerable coastal aquifers.
- Management strategies must consider aquifer depth and traits.
Powerful cyclones pose a significant threat to deep groundwater quality, potentially contaminating aquifers over 100 meters below the surface, according to a recent IIT Kharagpur study. The research, conducted in the Sundarbans, a highly climate-vulnerable coastal region, analyzed the impact of extreme weather events between May 2017 and May 2020.
Researchers discovered that cyclones and atmospheric depressions can rapidly change groundwater levels and flow, leading to the mixing of freshwater and seawater. These alterations were detectable even in deep aquifers, affecting water balance and quality. The findings are crucial for coastal areas heavily reliant on groundwater for drinking water security.
Traditional groundwater management approaches may be insufficient, as the study emphasizes the need to consider the distinct characteristics of different aquifer depths. Recommendations include continuous multi-depth groundwater monitoring and integrating extreme weather forecasts into water resource management plans to safeguard freshwater supplies in vulnerable coastal deltas worldwide.
