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← GeographyWhich outcome occurs when the hydraulic gradient rises significantly within a coastal aquifer?
A)Increased saltwater intrusion occurs rapidly✓
B)Higher rates of sand dune stabilization
C)Decreased nearshore sediment transport
D)Pronounced intensification of longshore drift
💡 Explanation
Increased hydraulic gradient forces greater groundwater flow towards the coast; therefore Saltwater intrusion accelerates because upconing of the saltwater interface occurs, rather than dune stabilization which requires sediment deposition, driven by a different mechanism entirely.
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