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Doctoral Thesis
DOI
10.11606/T.21.2015.tde-13082015-111218
Document
Author
Full name
Carlos Eduardo Rogacheski
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Tessler, Moyses Gonsalez (President)
Calliari, Lauro Júlio
Klein, Antonio Henrique da Fontoura
Siegle, Eduardo
Toldo Junior, Elírio Ernestino
Title in Portuguese
Estudo da forma em planta de praias em equilíbrio dinâmico com desembocaduras no litoral brasileiro
Keywords in Portuguese
barreira arenosa
dinâmica de desembocaduras
linha de costa
morfodinâmica costeira de longo prazo
relações empíricas
Abstract in Portuguese
O presente estudo modificou o modelo parabólico da forma em planta de equilíbrio de Medellín et al., 2009, proposto para praias de enseada com desembocaduras, incorporando um parâmetro relacionado à dinâmica costeira, que seria o volume de areia necessário para formar a praia emersa próxima à desembocadura. Foram escolhidas 27 desembocaduras na costa brasileira e obtidos parâmetros da dinâmica costeira e estuarina, através de imagens do Googleearth e dados de ondas e marés astronômicas dos programas SMC-TOOLS e WXTide32, respectivamente. O modelo parabólico foi aplicado e não se ajustou adequadamente, com diferenças com relação à linha de costa de 20-40m até 80m. Logo, foi realizada sua adaptação à costa brasileira, apresentando uma moderada a baixa dispersão dos coeficientes A e B de 77 % e 64%, respectivamente. Sua validação apresentou ajuste bom a satisfatório, com diferenças médias de 5m até máximas de 15m com relação à linha de costa. Posteriormente, foi realizada a modificação do modelo parabólico que minimizou a dispersão dos coeficientes A e B com um ajuste de 98 % e 81%, respectivamente. Sua validação apresentou um ajuste excelente a bom, com diferenças médias de 3-5m até máximas de 10m com relação à linha de costa.
Title in English
Study of the planform in the beaches inlets with dynamics equilibruim in the brazilian coast
Keywords in English
empirical relationship
inlets dynamics
long-term morphodynamic coastal
sand barrier
shoreline
Abstract in English
This study modified the equilibrium plan form formulations proposed by Medellín et al., (2009) to embayments beachs with inlets, by incorporating a parameter related to coastal dynamics, that would be the volume of sand required to build the aerial beach close to the inlet. For this study 27 embayments beaches with inlets were chosen on the Brazilian coast and obtained parameters of dynamics coastal and estuarine, through GoogleEarth images and waves and astronomical tide datas series by the SMC-TOOLS and WXTide32 programs, respectively. The Medellín parabolic model was applied and did not fit properly, with differences regarding the shoreline of 20-40m up to maximum of 80m. Therefore, their adaptation to the Brazilian coast was carried out, which showed a moderate to low dispersion of the coefficients A and B of 77% and 64%, respectively. Their validation showed good to satisfactory fit, with mean differences regarding the shoreline of 5m up to maximum of 15m. Subsequently, the modification of the parabolic model was carried out which minimized the dispersion of the coefficients A and B with a fit of 98% and 81%, respectively. Their validation showed an excellent to good fit, with mean differences regarding the shoreline of 3-5m up to maximum of 10m.
 
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Publishing Date
2015-08-13
 
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