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← GeographyWhat outcome occurs when strong wave refraction focuses energy near a sea stack adjacent to a headland promontory?
A)Accelerated stack base erosion✓
B)Reduced sediment deposition offshore
C)Increased longshore current velocity
D)Stabilized headland sediment budget
💡 Explanation
Wave refraction concentrates energy on the stack's base, enhancing hydraulic action. This 'wave focusing' mechanism accelerates erosion there because impact pressure increases rather than distributing equally, leading to cliff retreat; therefore, base erosion is intensified.
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