干旱区生态环境知识资源中心(Arid): Estimation of depression-focussed groundwater recharge using chloride mass balance: problems and solutions across scales

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DOI	10.1007/s10040-019-01993-2
	Estimation of depression-focussed groundwater recharge using chloride mass balance: problems and solutions across scales
	Pavlovskii, Igor; Hayashi, Masaki; Cey, Edwin E.
通讯作者	Pavlovskii, Igor
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2019
卷号	27 期号:6 页码:2263-2278
英文摘要	This study evaluates the applicability of the chloride mass balance (CMB) method for groundwater recharge estimation in a semi-arid region in Canada, where recharge largely occurs under topographic depressions. The CMB applicability was tested at three scales: point-scale recharge rates at different topographical positions; average recharge rates incorporating multiple topographical positions on a local scale; and an identification of spatial trends of recharge on a regional scale. Agricultural chloride inputs were shown to be a major factor affecting chloride concentrations at all three scales, where elevated chloride concentrations in the shallow subsurface affected by agricultural inputs surpassed background concentrations by an order of magnitude. The propagation depth of elevated concentrations varied among study sites from being largely confined to the unsaturated zone to extending well into the saturated zone. Lateral chloride redistribution further affected the CMB applicability for point-scale recharge rates. Specific solutions enabling the CMB application in these conditions are presented, including runoff concentration measurements for point-scale estimates, using groundwater age tracers on a local scale, and using the harmonic mean concentration of a large number of samples on a regional scale.
英文关键词	Groundwater recharge Chloride mass balance Semi-arid Agriculture Unsaturated zone
类型	Article
语种	英语
国家	Canada
收录类别	SCI-E
WOS记录号	WOS:000481884200023
WOS关键词	CANADIAN PRAIRIES ; UNSATURATED FLOW ; SURFACE-WATER ; ALBERTA BASIN ; WETLAND ; SASKATCHEWAN ; INFILTRATION ; TRANSPORT ; ADJACENT ; SYSTEMS
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216185
作者单位	Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Pavlovskii, Igor,Hayashi, Masaki,Cey, Edwin E.. Estimation of depression-focussed groundwater recharge using chloride mass balance: problems and solutions across scales[J],2019,27(6):2263-2278.
APA	Pavlovskii, Igor,Hayashi, Masaki,&Cey, Edwin E..(2019).Estimation of depression-focussed groundwater recharge using chloride mass balance: problems and solutions across scales.HYDROGEOLOGY JOURNAL,27(6),2263-2278.
MLA	Pavlovskii, Igor,et al."Estimation of depression-focussed groundwater recharge using chloride mass balance: problems and solutions across scales".HYDROGEOLOGY JOURNAL 27.6(2019):2263-2278.