Erosão e acresção costeira na Enseada dos Anjos, Arraial do Cabo, RJ

Abstract

The present work studies coastal and accretion while morphodynamic implications caused by the construction of a breakwater to protect the boats in Porto do Forno, Enseada dos Anjos, Arraial do Cabo, RJ, Brazil. To understand the erosion and accretion caused by the breakwater , we analysed previous and later data to its construction such as photography, bathymetric charts, and other information. Corroborating this initial material we carried out many studies as beach profiles, analysis of the coastline changes at different times, study of the balance in plant for inlet beach and waves refraction analysis. The results indicated that the breakwater altered several natural processes. They include the distribution of wave gradient through MIKE-21, the sedimentation dynamic by beach profiles, and mainly the localised effects of coastal erosion and accretion perfectly seem in the temporal comparison of photographs, charts and images.