DOI: 10.5194/hess-22-1629-2018
Scopus记录号: 2-s2.0-85042857139
论文题名: Using hydraulic head, chloride and electrical conductivity data to distinguish between mountain-front and mountain-block recharge to basin aquifers
作者: Bresciani E ; , Cranswick R ; H ; , Banks E ; W ; , Batlle-Aguilar J ; , Cook P ; G ; , Batelaan O
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2018
卷: 22, 期: 2 起始页码: 1629
结束页码: 1648
语种: 英语
Scopus关键词: Aquifers
; Boreholes
; Chlorine compounds
; Electric conductivity
; Groundwater
; Groundwater flow
; Groundwater resources
; Hydrogeology
; Landforms
; Water management
; Water resources
; Arid and semi-arid regions
; Chloride concentrations
; Electrical conductivity
; Groundwater flow directions
; Groundwater system
; Hydrogeological database
; Quaternary aquifers
; Recharge mechanisms
; Recharging (underground waters)
; aquifer
; chloride
; database
; electrical conductivity
; front
; groundwater
; groundwater flow
; hydraulic head
; hydrogeology
; recharge
; stream
; subsurface flow
; Adelaide
; Australia
; Mount Lofty Ranges
; South Australia
英文摘要: Numerous basin aquifers in arid and semi-arid regions of the world derive a significant portion of their recharge from adjacent mountains. Such recharge can effectively occur through either stream infiltration in the mountain-front zone (mountain-front recharge, MFR) or subsurface flow from the mountain (mountain-block recharge, MBR). While a thorough understanding of recharge mechanisms is critical for conceptualizing and managing groundwater systems, distinguishing between MFR and MBR is difficult. We present an approach that uses hydraulic head, chloride and electrical conductivity (EC) data to distinguish between MFR and MBR. These variables are inexpensive to measure, and may be readily available from hydrogeological databases in many cases. Hydraulic heads can provide information on groundwater flow directions and stream-aquifer interactions, while chloride concentrations and EC values can be used to distinguish between different water sources if these have a distinct signature. Such information can provide evidence for the occurrence or absence of MFR and MBR. This approach is tested through application to the Adelaide Plains basin, South Australia. The recharge mechanisms of this basin have long been debated, in part due to difficulties in understanding the hydraulic role of faults. Both hydraulic head and chloride (equivalently, EC) data consistently suggest that streams are gaining in the adjacent Mount Lofty Ranges and losing when entering the basin. Moreover, the data indicate that not only the Quaternary aquifers but also the deeper Tertiary aquifers are recharged through MFR and not MBR. It is expected that this finding will have a significant impact on the management of water resources in the region. This study demonstrates the relevance of using hydraulic head, chloride and EC data to distinguish between MFR and MBR. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79369
Appears in Collections: 气候变化事实与影响
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作者单位: National Centre for Groundwater Research and Training, School of the Environment, Flinders University, Adelaide, SA, Australia; Korea Institute of Science and Technology, Seoul, South Korea; Department of Environment, Water and Natural Resources, Government of South Australia, Adelaide, SA, Australia; Kansas Geological Survey, University of Kansas, Lawrence, KS, United States
Recommended Citation:
Bresciani E,, Cranswick R,H,et al. Using hydraulic head, chloride and electrical conductivity data to distinguish between mountain-front and mountain-block recharge to basin aquifers[J]. Hydrology and Earth System Sciences,2018-01-01,22(2)