Which consequence occurs when an alluvial aquifer collapses?

💡 Explanation

Surface subsidence happens because water pressure supports soil. Extracting water causes effective stress increases, thereby compacting alluvium via isostatic adjustment, leading to land subsidence; rather than increased seismicity as related to tectonic motion.

• Which hazard increases when overlying clay erodes above karst?
• Which outcome occurs when a glacial moraine destabilizes a fault?
• Which process enhances cirque formation when freeze-thaw cycles act on fractured bedrock within a glacial environment?
• Which consequence results when a breakwater disrupts longshore drift?
• What outcome during flood basalt eruption maximizes atmospheric sulfur release?
• Which soil horizon characteristic results from eluviation processes?