Journal ArticleDOI
Estimation of rainfall inputs and direct recharge to the deep unsaturated zone of southern Niger using the chloride profile method
TLDR
In this paper, an estimate of direct groundwater recharge below a region of natural woodland (tiger bush) has been made in south-west Niger using the solute profile technique, which has been collected from a 77 m deep well drug within the study area covered by HAPEX-Sahel (Hydrological and Atmospheric Pilot Experiment), an international large-scale energy, water and carbon balance experiment carried out during the summer of 1992.About:
This article is published in Journal of Hydrology.The article was published on 1997-02-01. It has received 67 citations till now. The article focuses on the topics: Groundwater recharge & Water content.read more
Citations
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Journal ArticleDOI
Global synthesis of groundwater recharge in semiarid and arid regions
Bridget R. Scanlon,K. E. Keese,Alan L. Flint,Lorraine E. Flint,C.B. Gaye,W. Michael Edmunds,Ian Simmers +6 more
TL;DR: A global synthesis of the findings from ∼140 recharge study areas in semi-arid and arid regions provides important information on recharge rates, controls, and processes, which are critical for sustainable water development as mentioned in this paper.
Journal ArticleDOI
Groundwater recharge: an overview of processes and challenges
Jacobus J. de Vries,Ian Simmers +1 more
TL;DR: In this article, the authors summarized current understanding of recharge processes, identified recurring rechargeevaluation problems, and reported on some recent advances in estimation techniques for (semi-)arid regions.
Journal ArticleDOI
Land surface processes and Sahel climate
TL;DR: In this article, the authors examine the role of land surface-atmosphere interactions in the West African Sahel and their role in the interannual variability of rainfall, and present arguments for the role that land surface feedback in producing these features and reviews research relevant to land surface processes in the region, such as results from the 1992 Hydrologic Atmospheric Pilot Experiment (HAPEX)-Sahel experiment and recent studies on aerosols and on the issue of desertification in the area, a factor implicated by some as a cause of the changes in rainfall.
Journal ArticleDOI
Land clearing, climate variability, and water resources increase in semiarid southwest Niger: A review
Guillaume Favreau,B. Cappelaere,Sylvain Massuel,Marc Leblanc,Marie Boucher,Nicolas Boulain,Christian Leduc +6 more
TL;DR: In this article, a physically-based, distributed hydrological model showed that land clearing increased runoff threefold, whereas the rainfall deficit decreased runoff by a factor of 2, and that the indirect impacts of land use change on water quantity and quality are much greater than the direct influence of climate variability.
Book ChapterDOI
Inorganic Ions as Tracers
TL;DR: In the unsaturated zone, the geochemical evolution, though less intense than in the soil and unsaturated zones, follows progressive changes in water quality towards areas of discharge as mentioned in this paper.
References
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Journal ArticleDOI
Physical controls of water movement in the unsaturated zone
S. R. Wellings,J. P. Bell +1 more
TL;DR: In this paper, the basic concepts of water content, water potential and unsaturated hydraulic conductivity are defined as they are developed in soil physics and applied to the flow of water in the unsaturated zone.
EPSAT-Niger : campagne 1990
Related Papers (5)
Choosing appropriate techniques for quantifying groundwater recharge
The use of environmental chloride and tritium to estimate total recharge to an unconfined aquifer
GB Allison,MW Hughes +1 more