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首页> 外文期刊>International journal of river basin management >Relationship between turbidity and suspended sediment concentration from a small hydrographic basin in Santa Maria (Rio Grande do Sul, Brazil)
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Relationship between turbidity and suspended sediment concentration from a small hydrographic basin in Santa Maria (Rio Grande do Sul, Brazil)

机译：来自圣玛丽亚（巴西里奥格兰德州）一个小型水文盆地的浊度与悬浮沉积物浓度之间的关系

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摘要

Sediment production has been the focus of many studies due to the problems caused by the alterations of the natural environment which are driven by the urbanization process. In Santa Maria, Brazil, urban area expansion and population growth have caused changes in the environment, such as in the structure and natural form of the land, in drainage channels, quality and quantity of water resources, soil sealing and intensive agricultural cultivation. Consequently, studies are necessary to quantify the sediment in rivers for a better understanding and also to develop tools in order to minimize impacts to the environment. This study assesses the relationship between turbidity and suspended sediment concentration (SSC) from a small hydrographic basin located in Santa Maria (Brazil). The methodology was based on monitoring the suspended sediment transport using automated turbidity registrations and suspended sediment samples, which were collected by automatic ISCO sampler. To do so, four field measurements were carried out from 2 September to 6 October 2014. The research has resulted in a good correlation between SSCs and turbidity (T), r= 0.8602, (P＜ .001), when the SSC data were analysed as a function of T it was observed that follow a model SSC=0.8337~(1.2266 (P＜.001), with a coefficient of determination R~2 = 0.740. Therefore, it may be a good alternative to generate continuous records of SSCs in rivers as a tool for water management in a hydrographic basin.
机译：由于城市化进程驱动自然环境的变化而引起的问题，泥沙生产一直是许多研究的重点。在巴西的圣玛丽亚，城市扩张和人口增长引起了环境变化，例如土地的结构和自然形态，排水渠，水资源的质量和数量，土壤封闭和集约化农业种植。因此，有必要进行研究以量化河流中的沉积物，以更好地理解和开发工具，以最大程度地减少对环境的影响。这项研究评估了位于巴西圣玛丽亚的小型水文盆地的浊度和悬浮沉积物浓度（SSC）之间的关系。该方法基于使用自动浊度记录和悬浮泥沙样品（由ISCO自动取样器收集）监控悬浮泥沙的输送。为此，2014年9月2日至10月6日进行了四次现场测量。研究发现，当SSC数据为SSC时，SSC与浊度（T）之间具有良好的相关性，r = 0.8602，（P ＜.001）。根据T的函数进行分析，发现遵循模型SSC = 0.8337〜（1.2266（P ＜.001），确定系数R〜2 = 0.740，因此，生成连续记录可能是一个很好的选择。河流中的SSC作为水文流域水管理的工具。

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