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DOI	10.5194/hess-24-2437-2020
	Sensitivity of hydrologic and geologic parameters on recharge processes in a highly heterogeneous, semi-confined aquifer system
	Maples, Stephen R.; Foglia, Laura; Fogg, Graham E.; Maxwell, Reed M.
通讯作者	Maples, SR
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2020
卷号	24 期号:5 页码:2437-2456
英文摘要	An increasing reliance on groundwater resources has been observed worldwide during the past 50-70 years and has led to unsustainable groundwater abstraction in many regions, especially in semi-arid and arid alluvial groundwater basins. Managed aquifer recharge (MAR) has been promoted to replenish overdrafted groundwater basins and augment surface water supply. However, MAR feasibility in alluvial groundwater basins is complicated by complex geologic architecture that typically includes laterally continuous, fine-texture confining units that can impede both recharge rates and regional propagation of increases in the hydraulic head. A greater feasibility of MAR hinges on identifying locations where rapid, high-volume recharge that provides regional increases in pressure head are possible, but relatively little research has evaluated the factors that control MAR feasibility in alluvial groundwater basins. Here, we combine a transition probability Markov chain geostatistical model of the subsurface geologic heterogeneity of the eastern side of the northern Central Valley, California, with the three-dimensional, variably saturated water flow code ParFlow to explore the variability of MAR feasibility in this region. We use a combination of computationally efficient local- and global-sensitivity analyses to evaluate the relative importance of factors that contribute to MAR feasibility. A novel proxy parameter approach was used to describe the configuration and proportions of subsurface hydrofacies and the water table depth for sensitivity analyses, and results suggest that recharge potential is relatively more sensitive to the variability of this proxy parameter than to the variability of individual hydrofacies hydraulic properties. Results demonstrate that large variability of MAR feasibility is typical for alluvial aquifer systems and that outsized recharge rates are possible in select locations where interconnected, coarse-texture hydrofacies occur.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000535189300001
WOS关键词	GROUNDWATER-FLOW ; HYDRAULIC CONDUCTIVITY ; SPATIAL VARIABILITY ; STOCHASTIC-ANALYSIS ; UNSATURATED FLOW ; MANAGED AQUIFER ; PERMEABILITY ; DISPERSION ; AREAS ; SOILS
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324525
作者单位	[Maples, Stephen R.] Univ Calif Davis, Hydrol Sci Grad Grp, One Shields Ave, Davis, CA 95616 USA; [Foglia, Laura; Fogg, Graham E.] Univ Calif Davis, Dept Land Air & Water Resources, One Shields Ave, Davis, CA 95616 USA; [Maxwell, Reed M.] Colorado Sch Mines, Dept Geol & Geol Engn, 1500 Illinois St, Golden, CO 80401 USA
推荐引用方式 GB/T 7714	Maples, Stephen R.,Foglia, Laura,Fogg, Graham E.,et al. Sensitivity of hydrologic and geologic parameters on recharge processes in a highly heterogeneous, semi-confined aquifer system[J]. University of California, Davis,2020,24(5):2437-2456.
APA	Maples, Stephen R.,Foglia, Laura,Fogg, Graham E.,&Maxwell, Reed M..(2020).Sensitivity of hydrologic and geologic parameters on recharge processes in a highly heterogeneous, semi-confined aquifer system.HYDROLOGY AND EARTH SYSTEM SCIENCES,24(5),2437-2456.
MLA	Maples, Stephen R.,et al."Sensitivity of hydrologic and geologic parameters on recharge processes in a highly heterogeneous, semi-confined aquifer system".HYDROLOGY AND EARTH SYSTEM SCIENCES 24.5(2020):2437-2456.