@article{fdi:010074378,
  title = {{S}ustainable groundwater resources exploration and management in a complex geological setting as part of a humanitarian project ({M}ahafaly {P}lateau, {M}adagascar)},
  author = {{C}arri{\`e}re, {S}. {D}. and {C}halikakis, {K}. and {O}llivier, {C}. and {H}eath, {T}. and {M}angin, {M}. and {K}empf, {J}ean and {R}andriatsitohaina, {J}. {B}. and {G}illon, {M}. and {R}azakamanana, {T}. and {L}ap{\`e}gue, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}outhwestern {M}adagascar is a semi-arid region and a hot-spot of global change. {O}n the {M}ahafaly plateau, people live with quasi-permanent water stress and groundwater, the only available resource, is difficult to exploit due to a complex hydrogeological environment. {A} methodology (suitable for humanitarian projects; <40k{E}uro) was developed in four phases to assess the sustainable exploitation of the water resource: ({A}) regional scale exploration, ({B}) village scale exploration, ({C}) drilling campaign, and ({D}) hydro-climatic monitoring. {T}his integrated hydrogeophysical approach involves geophysical measurements (262 {TEM}-fast soundings, 2588 {S}lingram measurements, 35 electrical soundings), hydrochemical analyses (112 samples), and a piezometric survey (127 measurements). {T}wo groundwater resources were identified, one deep (below 150m) and one shallow (<20m). {H}ydrochemical results highlighted the vulnerability of both resources: anthropic contamination for the shallower and seawater intrusion for the deeper. {T}herefore, subsequent geophysical surveys supported the siting of six boreholes and three wells in the shallow aquifer. {T}his methodological approach was successful in this complex geological setting and requires testing at other sites in and outside {M}adagascar. {T}he study demonstrates that geophysical results should be used in addition to drilling campaigns and to help monitor the water resource. {I}n fact, to prevent over-exploitation, piezometric and meteorological sensors were installed to monitor the water resource. {T}his unique hydro-climatic observatory may help (1) non-governmental organization and local institutions prevent future water shortages and (2) scientists to understand better how global change will affect this region of the world.},
  keywords = {{H}umanitarian project ; {G}roundwater resources ; {M}ahafaly plateau ; {H}ydrogeophysics ; {S}aline intrusion ; {W}ater access ; {MADAGASCAR}},
  booktitle = {},
  journal = {{E}nvironmental {E}arth {S}ciences},
  volume = {77},
  numero = {21},
  pages = {art. 734 [16 p.]},
  ISSN = {1866-6280},
  year = {2018},
  DOI = {10.1007/s12665-018-7909-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074378},
}