Utility of bromide and heat tracers for aquifer characterization   affected by highly transient flow conditions

doi:10.1029/2011WR011281

CORC > 北京大学 > 工学院

	Utility of bromide and heat tracers for aquifer characterization affected by highly transient flow conditions
	Ma, Rui ; Zheng, Chunmiao ; Zachara, John M. ; Tonkin, Matthew
刊名	water resources research
	2012
关键词	HYDRAULIC CONDUCTIVITY PARAMETER-ESTIMATION GEOTHERMAL SYSTEMS BAYESIAN-APPROACH GROUNDWATER-FLOW TEMPERATURE TRANSPORT SIMULATION SOLUTE STREAM
DOI	10.1029/2011WR011281
英文摘要	A tracer test using both bromide and heat tracers conducted at the Integrated Field Research Challenge site in Hanford 300 Area (300A), Washington, provided an instrument for evaluating the utility of bromide and heat tracers for aquifer characterization. The bromide tracer data were critical to improving the calibration of the flow model complicated by the highly dynamic nature of the flow field. However, most bromide concentrations were obtained from fully screened observation wells, lacking depth-specific resolution for vertical characterization. On the other hand, depth-specific temperature data were relatively simple and inexpensive to acquire. However, temperature-driven fluid density effects influenced heat plume movement. Moreover, the temperature data contained "noise" caused by heating during fluid injection and sampling events. Using the hydraulic conductivity distribution obtained from the calibration of the bromide transport model, the temperature depth profiles and arrival times of temperature peaks simulated by the heat transport model were in reasonable agreement with observations. This suggested that heat can be used as a cost-effective proxy for solute tracers for calibration of the hydraulic conductivity distribution, especially in the vertical direction. However, a heat tracer test must be carefully designed and executed to minimize fluid density effects and sources of noise in temperature data. A sensitivity analysis also revealed that heat transport was most sensitive to hydraulic conductivity and porosity, less sensitive to thermal distribution factor, and least sensitive to thermal dispersion and heat conduction. This indicated that the hydraulic conductivity remains the primary calibration parameter for heat transport.; Environmental Sciences; Limnology; Water Resources; SCI(E); EI; 0; ARTICLE; 8; 48
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/231380]
专题	工学院
推荐引用方式 GB/T 7714	Ma, Rui,Zheng, Chunmiao,Zachara, John M.,et al. Utility of bromide and heat tracers for aquifer characterization affected by highly transient flow conditions[J]. water resources research,2012.
APA	Ma, Rui,Zheng, Chunmiao,Zachara, John M.,&Tonkin, Matthew.(2012).Utility of bromide and heat tracers for aquifer characterization affected by highly transient flow conditions.water resources research.
MLA	Ma, Rui,et al."Utility of bromide and heat tracers for aquifer characterization affected by highly transient flow conditions".water resources research (2012).