Which consequence results when groundwater withdraws from alluvial aquifers?

💡 Explanation

Subsidence increases due to compaction; effective stress rises in dewatered alluvial deposits due to reduced pore pressure, because total stress remains unaffected, creating greater grain contact. Therefore, subsidence amplifies in these regions after major dewatering, rather than porosity increases or bedrock discharges.

• Which outcome develops on exposed bedrock when deflation is concentrated by topographic constrictions?
• Which soil consequence results when topsoil nutrient leaching exceeds pedogenesis processes?
• Which outcome occurs when increased glacial scouring affects alpine soil formation?
• Which outcome occurs when storm surge overtops barrier islands?
• Which downslope movement occurs when permafrost thaw increases soil moisture above sediment shear strength on a tundra slope?
• Which outcome occurs when groundwater weakens a fault?