FLUXOS DE SEDIMENTOS EM SUSPENSÃO SIMULADOS NA AMÉRICA DO SUL - PARTE 2: ANÁLISE ESPAÇO-TEMPORAL

Código

ENES20200035

Autores

Hugo de Oliveira Fagundes, Fernando Mainardi Fan, Rodrigo Cauduro Dias de Paiva, VINÍCIUS ALENCAR SIQUEIRA, Diogo Costa Buarque, Luísa Weizenmann Kornoswski, LEONARDO LAIPELT DOS SANTOS, Walter Collischonn

Tema

11 - MODELAGEM HIDROSSEDIMENTOLÓGICA

Resumo

Erosion and sediment transport models are useful tools to improve the comprehension of sediment-related processes. Using the MGB-SED SA model presented in part 1 of this work, we performed a temporal and spatial analysis of suspended sediment fluxes over South America. We use maps and graphics to show the results of the model simulation. It was estimated using MGB-SED SA that South America naturally (without impoundments) daily delivery to the oceans 3.10×1010 m³ of water and 2.76 Mt of suspended sediment. The results showed the importance of model calibration at the continental scale and the use of a hydrodynamic routing method, in which both improve model estimates. Floodplains play a essential role trapping sediments and smoothing out the peaks of suspended sediment discharges. The Amazon, Magdalena and La Plata have the highest annual sediment transport and deposition rates.