Groyne
Coastal defense structures constructed perpendicular to the shoreline that interrupt longshore sediment transport and create areas of sediment accumulation.
Real World
The groynes at Mappleton, East Yorkshire, were installed in 1991 to protect the village, but downdrift erosion at Great Cowden accelerated dramatically, with farmland lost at rates exceeding 4 metres per year.
Exam Focus
Always evaluate groynes by discussing both updrift benefits and downdrift sediment starvation to access higher mark bands.
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