Which effect occurs in coastal aquifers when excessive groundwater extraction lowers the water table?

💡 Explanation

Saltwater intrusion occurs through capillary action because lowering the water table reduces the hydrostatic pressure, therefore allowing denser seawater to migrate inland, rather than maintaining the freshwater storage due to hydraulic head.

• Which risk increases when powerful jet streams meander significantly?
• Which seismic consequence arises from strain accumulation along a transform fault boundary?
• Which mechanism intensifies meandering of jet streams within upper troposphere?
• Which primary mechanism leads to the isolation and eventual formation of an oxbow lake?
• Which risk increases when thawing permafrost destabilizes coastal bluffs undergoing wave action?
• Which outcome is caused by creep along a major fault?