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← GeographyWhich consequence results when a jetty interrupts longshore transport pathways?
A)Down-drift erosion increases significantly✓
B)Up-drift deposition slows considerably
C)Wave refraction diminishes markedly
D)Tidal prism volume expands rapidly
💡 Explanation
Increased down-drift erosion occurs due to sediment starvation; the jetty blocks longshore drift interrupting sediment supply via sediment bypassing, which is the dominant transport mechanism. Therefore, erosion increases significantly on the down-drift side, rather than deposition slowing on the up-drift side because sediments accumulate there.
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