Portland Bill to Selsey Bill
A coastal segment demonstrating the Portland to Selsey sediment cell, illustrating sediment transfer from sources near Portland through accumulation zones to terminal sinks near Selsey.
Real World
Construction of Poole Harbour's training walls in the 20th century intercepted longshore drift within this cell, reducing sediment supply to Bournemouth's beaches and requiring costly annual beach nourishment schemes costing millions of pounds.
Exam Focus
Name specific locations (Portland Bill, Chesil Beach, Poole Harbour) in exam answers — generic responses rarely achieve top-band marks.
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