Utilização do método de perfil de equilíbrio para determinar a estabilidade e a evolução de perfis praias arenosas

• Autor(a) principal: Pasolini, Alexandre
• Data de Publicação: 2008
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/3899
• topic: Engenharia Sanitária; Ondas oceânicas; Sedimentos marinhos; Praias; Marés; Erosão de praias; 628

The analysis of the stability of the profiles of beach promoted the development of various formulations, with the highlight the concept of equilibrium profile, originally introduced in 1954 by Brunn. The evolution of the studies with the profile of equilibrium provided the refinement of the concept, promoting improvements in the representation of the profile. The first contribution was made by Dean and others (1992), who identified the influence of the variation in size and shape of the profile adapted the equations in order to represent their influence on the profile of balance. Bernabeu and others (2002) developed two equations of equilibrium profile, to represent a profile in the zone of warping waves and the other for the surf zone. In 2006, Turk and one changed the equation of the parameter of form and fall, in a direct way, the parameters of the size of sediments, wave and the displacement of sediment in the equation. One sector of the beach Camburi was chosen for this study, which surveys were conducted as the field: bathymetry, topography, collecting data from waves and tides and samples of sediments in order to subsidize the analysis of the main equations of equilibrium today exist, thus evaluating the response of each equation and conditions of this beach which went through processes of artificial feeding and, currently, can be seen in primary stability. The model of Turk and others, 2006, which enables modellers insertion of the profile players such as wave and sediment in the equation of the parameter in the profile of balance, showed the best representation of a balanced and provided the evolution of the profiles of balance at different hydrodynamic conditions, indicating where the profile may translate in accordance with changes in the environment. These characteristics make the model mentioned a tool in analyzing the behavior of profiles of beach, which is due to remodel cross-sediment transport.