Assessment of Turbidity as a Quick Tool to Quantify the Sediment Transport

Abstract

Erosions on slopes or on riverbanks are consequences of the several mechanisms actions that can disrupt the system natural balance. Among the natural mechanisms, the action of rainfall events on different land uses is noteworthy, as depending on their intensity and duration, these events can generate high erosion rates and hence cause a large amount of sediment transported through fluvial channels. Knowing the dynamics of sediment transport in river basins is extremely important, because it helps decision-making regarding the need to seek new forms of soil management. In this work, solid discharge was calculated by determining the suspended solids concentration and by the correlation between the sediment concentration parameters and turbidity in the waters of Maringá Stream-PR, in order to evaluate sediment transport capacity. It was observed that the use of the correlation leads to significant errors in determining solid discharge; nevertheless, it can be an important tool given its practicality, lower cost and quick outcome.

Efeitos do uso de frequência de ultrassom na dispersão de sedimentos agregados

“…Os estudos que se referem aos sedimentos, destacando sua relação com a água e respeitando os processos hidroclimatológicos, são denominados Sedimentologia (CARVALHO, 2008). Schneider et al (2014) P a g e | 99 Revista Ibero-Americana de Ciências Ambientais v.8 -n.3  Fev, Mar, Abr, Mai 2017 destacou a importância do conhecimento com relação ao transporte de sedimentos em bacias hidrográficas, pois auxilia o gestor na tomada de decisão quanto à necessidade de buscar novas formas de manejo do solo. Mendes et al (2014) demonstraram em seu trabalho a capacidade que os sedimentos tem em transportar nutrientes, os quais em excesso podem prejudicar o meio ambiente.…”

Morphometric characteristics and hydrological dynamics in micro-basins with different land uses of cerrado soils in Mato Grosso

“…Depending on a rainfall events intensity and duration it may result in high levels of erosion, and consequently sediment transport to stream channels. Schneider et al (2014) note that it is important to identify the dynamics of transport within water basins as this helps land managers determine when new methods of land management may be necessary.…”