Next Article in Journal
Resilience Assessment of Water Quality Sensor Designs under Cyber-Physical Attacks
Next Article in Special Issue
Dispersion Plumes in Open Ocean Disposal Sites of Dredged Sediment
Previous Article in Journal
Sustainable Surface Water Storage Development Pathways and Acceptable Limits for River Basins
Previous Article in Special Issue
Impact of Jetty Configuration Changes on the Hydrodynamics of the Subtropical Patos Lagoon Estuary, Brazil
Article

Temporal Variability of Suspended-Solids Concentration in the Estuarine Channel of Patos Lagoon, Southern Brazil

1
Laboratório de Oceanografia Costeira e Estuarina, Instituto de Oceanografia, Universidade Federal do Rio Grande, Avenida Itália km 8, Rio Grande, RS 96203-900, Brazil
2
Laboratório de Oceanografia Física, Programa de Pós-Graduação em Ciência e Tecnologia Ambiental, Universidade do Vale do Itajaí, Escola do Mar, Ciência e Tecnologia, Rua Uruguai 458, Itajaí, SC 88302-901, Brazil
*
Author to whom correspondence should be addressed.
Current address: UL International GmbH. Ebertstrasse 96, 26382 Wilhelmshaven, Germany.
Water 2021, 13(5), 646; https://doi.org/10.3390/w13050646
Received: 28 November 2020 / Revised: 28 December 2020 / Accepted: 14 January 2021 / Published: 28 February 2021
The assessment of suspended-solids dynamics is crucial for the effective monitoring of estuarine environments. As the recurring in-situ sampling is usually problematic, the calibration of the backscattering from acoustic Doppler profilers has shown to be a reliable technique to estimate the suspended-solids concentration (SSC) in estuaries and rivers. In this study, we obtained a linear model that provides SSC estimates for the estuarine channel of Patos Lagoon by calibrating turbidity and acoustic data with in-situ concentration samples. The model output was analyzed in terms of its relationship with estuarine hydrodynamics and temporal variability. In this estuary, the supply of suspended solids is known to be due the runoff from its main tributaries, but also through the exchanges between the estuary and the coastal ocean. Both sources provide sediments and organic solids which affect water quality, geomorphology, and harbor operations. Results show that SSC is strongly linked to estuarine hydrodynamics, where concentrations increase with streamflow. During outflow periods, higher concentrations are associated with river runoff, whereas with inflow conditions they are induced by southern and southwesterly winds. However, relationship between SSC and streamflow is asymmetrical, meaning that the largest concentrations are majorly linked to outflow currents and downstream transport. View Full-Text
Keywords: suspended-solids concentration; acoustic signal backscatter; Patos Lagoon estuary; temporal variability suspended-solids concentration; acoustic signal backscatter; Patos Lagoon estuary; temporal variability
Show Figures

Figure 1

MDPI and ACS Style

Ávila, R.A.; Orozco, P.M.S.; Andrade, M.M.; Möller, O.O., Jr. Temporal Variability of Suspended-Solids Concentration in the Estuarine Channel of Patos Lagoon, Southern Brazil. Water 2021, 13, 646. https://doi.org/10.3390/w13050646

AMA Style

Ávila RA, Orozco PMS, Andrade MM, Möller OO Jr. Temporal Variability of Suspended-Solids Concentration in the Estuarine Channel of Patos Lagoon, Southern Brazil. Water. 2021; 13(5):646. https://doi.org/10.3390/w13050646

Chicago/Turabian Style

Ávila, Rafael A., Priscila M.S. Orozco, Mauro M. Andrade, and Osmar O. Möller Jr. 2021. "Temporal Variability of Suspended-Solids Concentration in the Estuarine Channel of Patos Lagoon, Southern Brazil" Water 13, no. 5: 646. https://doi.org/10.3390/w13050646

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop