Spatiotemporal Variability in Water Sources Controls Chemical and Physical Properties of a Semi‐arid Urban River System
Spatiotemporal Variability in Water Sources Controls Chemical and Physical Properties of a Semi‐arid Urban River System
复制标题
水源的时空变化控制着半干旱城市河流系统的化学和物理特性
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
S. Weintraub
中科院分区：
文献类型：
--
作者：
J. Shah;Yusuf Jameel;Rose M. Smith;R. Gabor;P. Brooks;S. Weintraub
我们在一年中进行了三个季节的天气调查，以评估犹他州一条具有复杂水基础设施的城市河流的水源和地球化学的变化。在贝叶斯混合模型框架和单独的水文质量平衡方法中使用河水的稳定同位素（δ 18 O和δ2H），我们量化了与“自然”（湖泊，地下水和支流输入）和“工程”（污水和运河流入）源相关的比例输入和排放量。这些主要贡献者的相对重要性，径流变化的空间和季节性。溶解氧，温度，pH值，钙，氯化物，硝酸盐和正磷酸盐的时空格局表明，季节性变化的主要来源的河水发挥了重要作用，在确定水质。我们发现，虽然城市河流显然是由水利基础设施创造的新水源的影响，他们继续反映的“自然”水源，包括分散的地下水的印记。因此，资源管理者可能需要考虑地表水沃茨和历史上被忽视的地下水输入的数量，以解决城市河流的水质问题。
We conducted synoptic surveys over three seasons in one year to evaluate the variability in water sources and geochemistry of an urban river with complex water infrastructure in the state of Utah. Using stable isotopes of river water (δ18O and δ2H) within a Bayesian mixing model framework and a separate hydrologic mass balance approach, we quantified both the proportional inputs and magnitude of discharge associated with “natural” (lake, groundwater, and tributary inputs) and “engineered” (effluent and canal inflows) sources. The relative importance of these major contributors to streamflow varied both spatially and seasonally. Spatiotemporal patterns of dissolved oxygen, temperature, pH, calcium, chloride, nitrate, and orthophosphate indicated seasonal shifts in dominant sources of river water played an important role in determining water quality. We show although urban rivers are clearly influenced by novel water sources created by water infrastructure, they continue to reflect the imprint of “natural” water sources, including diffuse groundwater. Resource managers thus may need to account for the quantity of both surface waters and also historically overlooked groundwater inputs to address water quality concerns in urban rivers.
地表水/地下水界面长期废水通量的量化：使用稳定同位素和安赛蜜的综合模型视角
DOI：
10.1016/j.scitotenv.2013.06.092
发表时间：
2014
期刊：
The Science of the total environment
影响因子：
--
作者：
Engelhardt;Schulz;Ternes;Schüth;van Geldern
通讯作者：
van Geldern