%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Mohamed, A. S.
%A Leduc, Christian
%A Marlin, C.
%A Wague, O.
%A Cheikh, M. A. S.
%T Impacts of climate change and anthropization on groundwater resources in the Nouakchott urban area (coastal Mauritania)
%B Vulnerability of inter-tropical littoral areas
%D 2017
%E Manighetti, I
%E De Witt, R.
%E Duvail, Stéphanie
%E Seyler, Patrick
%L fdi:010071892
%G ENG
%J Comptes Rendus Geoscience
%@ 1631-0713
%K Anthropization ; Coastal aquifer ; Urban flood ; Semi-arid areas
%K MAURITANIE ; NOUAKCHOTT ; ZONE SEMIARIDE
%M ISI:000417625700007
%N 6-7
%P 280-289
%R 10.1016/j.crte.2017.09.011
%U https://www.documentation.ird.fr/hor/fdi:010071892
%> https://www.documentation.ird.fr/intranet/publi/2018/01/010071892.pdf
%V 349
%W Horizon (IRD)
%X Declining groundwater resources in semi-arid areas are often cited because of anthropization and climate change. This is not the case in Nouakchott (Mauritania) where the water level has risen by 1 to 2 m over the last 40 years in parallel with urban expansion (+1 million inhabitants in 60 years). Using former and new data, primarily water table measurements and chemical indicators (major ions, bromide, O-18, H-2), we show that the groundwater level rise is mainly a consequence of the rapid population growth in the Nouakchott area, while the global sea level rise only has a limited impact. The increased supply of domestic water (currently 120,000 m(3)/day) and the lack of waste water networks have added large amounts of water to the Quaternary aquifer. In this metropolis where 60% of the total area is at an elevation of less than 1 m asl, the rise in the groundwater level has dramatic consequences, including the abandonment of flooded districts, and the emergence of new diseases.
%$ 062 ; 102 ; 021