Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich outcome predominantly results along coastlines when longshore transport stalls due to a deepwater harbor's artificial breakwater?
A)Upstream erosion, downstream accretion✓
B)Uniform sediment distribution widens beaches
C)Ephemeral island creation offshore increases
D)Consistent equilibrium across adjacent coasts
💡 Explanation
Erosion occurs upstream and accretion downstream of a breakwater because sediment becomes trapped; the mechanism is sediment starvation. Therefore, the upstream region loses sediment faster, rather than distributing along shores or forming offshore islands under constant deposition.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which mechanism accelerates sediment deposition at the seaward mouth of a fjord system following deglaciation?
- Which outcome results when hydraulic action on loess?
- Which outcome follows when cooled lava contracts in the Earth's crust?
- Which outcome results when increased Antarctic ice shelf melting increases stratification?
- Which geographic effect results from variations in solar insolation related to Earth's orbit around the Sun?
- Which outcome occurs when a glacial moraine destabilizes a fault?
