Which consequence results when subsidence destabilizes an alluvial aquifer?

💡 Explanation

Saltwater intrusion becomes amplified because aquifer compaction from subsidence lowers freshwater head, allowing denser saltwater to encroach; therefore, saltwater intrusion occurs, rather than other hydrological events affected by different mechanisms.

• Which mechanism initiates liquefaction during an earthquake when seismic waves propagate through saturated soil?
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