Articles | Volume 378
Proc. IAHS, 378, 93–98, 2018
https://doi.org/10.5194/piahs-378-93-2018
Proc. IAHS, 378, 93–98, 2018
https://doi.org/10.5194/piahs-378-93-2018
Post-conference publication
29 May 2018
Post-conference publication | 29 May 2018

Isotopic composition and elemental concentrations in groundwater in the Kuiseb Basin and the Cuvelai-Etosha Basin, Namibia

Nnenesi A. Kgabi et al.

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Cited articles

Christelis, G. and Struckmeier, W. (Eds): Groundwater in Namibia: an explanation to the Hydrogeological Map, 2nd Edition, 132 pp., available at: http://www.bgr.bund.de/EN/Themen/Wasser/Projekte/abgeschlossen/TZ/Namibia/groundwater_namibia.pdf?__blob=publicationFile (last access: 23 February 2018), January 2011. 
Clark, I. D. and Fritz, P.: Environmental isotopes in hydrogeology, CRC press, Boca Raton, Florida, 1997. 
Craig, H.: Isotopic variations in meteoric waters, Science, 133, 1702–1703, pmid:17814749, 1961. 
Elliot, T.: Environmental tracers, Water Journal, 6, 3264–3269, https://doi.org/10.3390/w6113264, 2014. 
Falke, M.: Kuiseb Basin water resources management project, Department of Water Affairs and Forestry, Windhoek, Ministry of Agriculture Water and Forestry, 2008. 
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Short summary
High salinity in the groundwater of Cuvelai-Etosha Basin is caused by the weathering of Kalahari sediments, not the evaporation of water on surface prior to groundwater recharge. Low salinity in the Kuiseb Basin derives from rapid recharge by unevaporated rain and limited weathering of the crystalline rocks. Thus, groundwater quality in the two Basins is controlled by water-rock interaction at the surface and in the groundwater aquifer.