Wave-Induced Sediment Transport Along The Northern Stretch Of Enseada Da Baia Formosa - Rio De Janeiro State

The morphological changes in coastal environments are the product of interactions between the oceanographic and continental processes, where the waves are the main responsible agent for the energy input for sediment transport. The present manuscript aims to estimate wave-induced sediment transport rate on Tartaruga and Abrico beaches, northern segment of the Enseada da Baia Formosa, Rio das Ostras - Rio de Janeiro State. As a basic methodology, a historical survey of oceanic data was performed and a statistical treatment was performed with 16 sediment samples collected in the surf zone at different dates. The main statistical parameters were the grain size (D-50), mean cube deviation (sigma) and skewness (Sk). The sediment transport's rate was obtained using The KOMAR and INMAN (1970) or so-called CERC (1984) equation. In general, the results represent the predominance of residual transport from north to south with rates between 75,000 m(3).year(-1) to 515,000 m(3).year(-1). The disparity between the values obtained is related to the frequency, the significant wave heights in deep waters (H-0) for the different analyzed quadrants and the textural variations of the sediments.