Abstract
Monitoring of the suspended sediment concentration (SSC) is important for the analysis of morphological processes in watersheds and rivers, river habitats, and human activities associated with river management. Acoustic Doppler current profilers (ADCP) are used for measurements of flow and velocity in rivers through acoustic waves, which can also be converted into sediment concentrations. In this context, the objective is to verify the applicability of the use of ADCPs (Sontek YSI, model M9 River Surveyor) as an alternative for SSC estimates, this being a recent application of the equipment, mainly in rivers in the Amazon region rich in sediments in suspension. Thus, the Gartner method was used, calibrating its equation with the concentrations obtained by the point sampling method, collected with a bottle of Van Dorn in the Guamá River, Amazon, Brazil. The method used to obtain the SSC with data measured via ADCP resulted in a satisfactory estimate of the concentrations. The correlations between the measured and estimated sediment concentrations had R2 = 0.6827 for point sampling method and R2 = 0.8103 for vertically averaged SSC. These satisfactory results demonstrate the potential of using ADCP to estimate sediments suspended in Amazon basin.
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The authors also would like to thank the Coordination for the Improvement of Higher Education Personnel - Brasil (CAPES), Finance Code 001 and Geological Service of Brazil for the support in the field. The second author would like to thank CNPq for the funding research productivity grant (Process 303542/2018-7).
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de Oliveira, P.A., Blanco, C.J.C., Mesquita, A.L.A. et al. Estimation of suspended sediment concentration in Guamá River in the Amazon region. Environ Monit Assess 193, 79 (2021). https://doi.org/10.1007/s10661-021-08901-w
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DOI: https://doi.org/10.1007/s10661-021-08901-w