DEVELOPMENT OF A GRAPHIC INTERFACE AND NA AUTOMATIC CALIBRATION MODULE FOR MGB-SED MODEL

Código

PAP033

Autores

Rodrigo Sanchotene Quintela, Victoria Ache Rocha Lopes, Hugo de Oliveira Fagundes, Fernando Mainardi Fan

Tema

MEDIÇÃO, MODELAGEM, TÉCNICAS E TECNOLOGIAS NO CONTEXTO DA HIDROSSEDIMENTOLOGIA

Resumo

Coupled hydrological and sediment models are useful tools to study sediment dynamics and its alteration due to human activities. Manymodels have been developed in the past few years. One of this new sediment model is the MGB-SED, which is coupled with the hydrological model MGBto study large-scale basins. Since it is a recent model, MGB-SED requires some enhancement, which lead to the two goals of the present study. First,it was developeda user-friendly interface in order to compare MGB-SED calculated values of sediment concentration and observed data for sediment concentration. Second,some of parameterforcalibration are adjustment coefficients anddo not have a physical meaning, which makes theirmanualcalibration more challenging. So,the evolutionary algorithm MOCOM-UA was used to calibrate automatically two parameters of MGB-SED using three objective functions.The observed data of sediment concentration used in calibration was obtained from one station located in Camaquã River in Rio Grande do Sul, Brazil.Results showed that the algorithm allowed for the estimation of the Pareto front aiding in the achievement of better results of objective functions. At the same time, the new graphic interface reachedits aim, adding a new alternative of data analysis for the user. Thepresent study, therefore, can consist in an improvement of the sediment production and transport model MGB-SED.