干旱区生态环境知识资源中心(Arid): Characterization of groundwater -surface water interactions using high resolution integrated 3D hydrological model in semiarid urban watershed of Niamey, Niger

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DOI	10.1016/j.jafrearsci.2019.103739
	Characterization of groundwater -surface water interactions using high resolution integrated 3D hydrological model in semiarid urban watershed of Niamey, Niger
	Boubacar, Abdou Boko 1,2; Moussa, Konate 2; Yalo, Nicaise 3; Berg, Steven J.4,5; Erler, Andre R.4,6; Hwang, Hyoun-Tae 4,5; Khader, Omar 4; Sudicky, Edward A.4,5
通讯作者	Boubacar, Abdou Boko
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2020
卷号	162
英文摘要	This study investigates groundwater-surface water interactions using an equivalent porous medium approach in a data scarce and semi-arid hydrogeological watershed located south-west Niger. A large scale fully-integrated hydrologic model was built and calibrated using HydroGeoSphere with a sequential approach of increasing levels of temporal resolution: 1) steady state average conditions; 2) dynamic equilibrium with repeating monthly normal forcing data; and 3) fully transient conditions. This approach provided a useful and straightforward method for reducing the calibration effort of the large-scale fully-integrated hydrologic model. River-aquifer exchange flux dynamics, water balance components for different land use classes, as well as basin average groundwater recharge were computed from the model. Simulation results show that exchange flux between groundwater and surface water are Important processes in the basin, with the Niger River acting primarily as a gaining stream, with local losing zones. Ephemeral streams constitute important focused groundwater recharge areas, while ponds exhibit either groundwater discharge behavior, or a recharge zone profile depending on local topography. The basin average water balance highlights the importance of plant transpiration (58% of total rainfall) over surface evaporation (8%), with groundwater recharge of up to 5% of total rainfall. Overland flow and infiltration account for 11% and 16% of the total annual rainfall respectively, and groundwater discharge to the river is 2% of the total rainfall.
英文关键词	Groundwater -surface water interactions Calibration Integrated hydrological model Semi arid
类型	Article
语种	英语
国家	Benin ; Niger ; Canada
收录类别	SCI-E
WOS记录号	WOS:000509618000036
WOS关键词	CLIMATE-CHANGE IMPACTS ; FLOW ; SOIL ; TRANSPORT ; GROWTH ; SAHEL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2020-02-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312663
作者单位	1.Univ Abomey Calavi, Grad Res Program Climate Change & Water Resources, West African Sci Serv Ctr Climate Change & Adapte, BP 526, Cotonou 03, Benin; 2.Univ Abdou Moumouni Niamey, Dept Geol, Fac Sci & Tech, BP 10 662, Niamey, Niger; 3.Univ Abomey Calavi, Natl Water Inst, BP 526, Cotonou 03, Benin; 4.Aquanty Inc, 564 Weber St North, Waterloo, ON, Canada; 5.Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON, Canada; 6.Univ Toronto, Dept Phys, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Boubacar, Abdou Boko,Moussa, Konate,Yalo, Nicaise,et al. Characterization of groundwater -surface water interactions using high resolution integrated 3D hydrological model in semiarid urban watershed of Niamey, Niger[J],2020,162.
APA	Boubacar, Abdou Boko.,Moussa, Konate.,Yalo, Nicaise.,Berg, Steven J..,Erler, Andre R..,...&Sudicky, Edward A..(2020).Characterization of groundwater -surface water interactions using high resolution integrated 3D hydrological model in semiarid urban watershed of Niamey, Niger.JOURNAL OF AFRICAN EARTH SCIENCES,162.
MLA	Boubacar, Abdou Boko,et al."Characterization of groundwater -surface water interactions using high resolution integrated 3D hydrological model in semiarid urban watershed of Niamey, Niger".JOURNAL OF AFRICAN EARTH SCIENCES 162(2020).