Over-extraction from urban aquifers in karst increases which risk?

💡 Explanation

Increased extraction lowers the water table, promoting mechanical weathering via the unloading pressure. This leads to increased effective stress because the reduced pore pressure weakens the rock matrix; therefore, more sinkholes form rather than increased water infiltration at a lowered water table.

• Which outcome occurs when persistent unidirectional winds cause significant changes in beach angle relative to headlands?
• Which phenomenon primarily causes the deflection of large subtropical ocean currents?
• Which consequence results when reducing soil organism diversity?
• Which process drives the upward transport of silica-rich magma at strike-slip fault zones?
• Which outcome is exacerbated when groundwater pressure increases within fault zones?
• Which pedogenic effect is accelerated when earthworm bioturbation increases?