Brown Kathleen J, Norris Gary A, Kovalcik Kasey D, Kamal Ali S, Patnode Kathleen, Landis Matthew S
U.S. Environmental Protection Agency, Office of Research and Development, Research Triangle Park, NC 27709, United States.
U.S. Fish and Wildlife Service, Pennsylvania Field Office, 110 Radnor Road, Suite 101, State College, Pennsylvania 16801.
J Environ Eng (New York). 2018 Oct;144(10). doi: 10.1061/(ASCE)EE.1943-7870.0001423.
Surface water conductivity measurements were used to evaluate the combined contribution of anions in western Pennsylvania from brines discharged by sources such as oil and gas wastewater treatment, coal-fired power plants, and coal mining activities. Conductivity sensor data were collected in the Allegheny River during a US Environmental Protection Agency and US Fish and Wildlife study that included seven sites covering 256 river km during the fall of 2012. Intermittent discharges, such as oil and gas wastewater, and continuous sources contributing to the conductivity were quantified using constrained and adaptive decomposition of time-series (CADETS) frequency analysis. CADETS was able to quantify the intermittent or short-term component of conductivity at sites where the intermittent fraction was 1 to 22% of the total conductivity. The demonstrated efficacy of the CADETS method for surface water quality analysis suggests it could be widely used to evaluate other water sensor data in rivers with both continuous and intermittent source impacts.
地表水电导率测量被用于评估宾夕法尼亚西部由石油和天然气废水处理、燃煤发电厂及煤炭开采活动等排放的盐水所导致的阴离子综合贡献。在美国环境保护局和美国鱼类及野生动物管理局的一项研究中，于2012年秋季在阿勒格尼河收集了电导率传感器数据，该研究涵盖七个站点，河段长度达256公里。利用时间序列的约束和自适应分解（CADETS）频率分析对导致电导率的间歇性排放（如石油和天然气废水）及持续性来源进行了量化。CADETS能够在间歇性部分占总电导率1%至22%的站点量化电导率的间歇性或短期成分。CADETS方法在地表水水质分析中所展现出的有效性表明，它可广泛用于评估同时受到连续和间歇性源影响的河流中的其他水传感器数据。
