Abstract
The coastline eastward from Rio de Janeiro up to Cape Frio is characterized by long and straight beach barriers frequently backed by lagoons and segmented by rocky headlands. No continental sediments are delivered to the continental shelf due to presence of the sandy beach barriers. With a generally east-west direction the coastline is directly exposed to storm waves from the south, with the longshore sediment transport tending to be in equilibrium. Episodes of coastal erosion associated to storm events due to the passage of cold fronts from the south induced a general retrogradation of the backshore scarp as also widespread wave overwash. Urbanization of the coast is discontinuous and occur in clusters with the constructions frequently build in the immediate proximity of the beach. After a severe storm in May 1991 houses as also part of the pavement of the coastal
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