Conceição Lighthouse, Rio Grande do Sul, Brazil, 1999. Conceição lighthouse succumbed to erosion and toppled over in 1993. Here it is being inspected by Lauro Calliari in 1999. This section of coast on the 400 km long beach has the highest rate of erosion in Brazil, estimated at 5.5 m yr-1. The beach is composed of fine sand and exposed to moderate waves which maintain a triple-barred 300-400 m wide fully dissipative surf zone, with waves only breaking on the outer bar during high waves/storm events. Inside the lighthouse is a small cobble beach composed of wave-abraded concrete and brick debris sourced from the slowly failing lighthouse. (Photo: A.D. Short, School of Geosciences, University of Sydney, NSW, Australia.)

Conceição Lighthouse, Rio Grande do Sul, Brazil, 1999. Conceição lighthouse succumbed to erosion and toppled over in 1993. Here it is being inspected by Lauro Calliari in 1999. This section of coast on the 400 km long beach has the highest rate of erosion in Brazil, estimated at 5.5 m yr-1. The beach is composed of fine sand and exposed to moderate waves which maintain a triple-barred 300-400 m wide fully dissipative surf zone, with waves only breaking on the outer bar during high waves/storm events. Inside the lighthouse is a small cobble beach composed of wave-abraded concrete and brick debris sourced from the slowly failing lighthouse. (Photo: A.D. Short, School of Geosciences, University of Sydney, NSW, Australia.)

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