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He) ont été utilisés pour caractériser les origines de recharge, les trajectoires d’écoulements et les temps de séjour dans trois aquifères distincts des Iles du Cap Vert (Afrique de l’Ouest).

High values of up to 8.3) are consistent with reported mantle derived helium of oceanic island basalts in Cape Verde and provided end-member constraints for improved dating at seven other locations.He) se usaron para evaluar las fuentes de la recarga, la trayectoria de flujo, y el tiempo de residencia en tres cuencas en las Islas de Cabo Verde (África Occidental).Los isótopos estables indican el predominio de altas precipitaciones que sufren una baja evaporación antes de la recarga subterránea.Tritium and He dating shows that São Nicolau Island’s Ribeira Fajã Basin has groundwater residence times of more than 50 years, whereas Fogo Island’s Mosteiros Basin and Santo Antão Island’s Ribeira Paul Basin contain a mixture of young and old groundwater.Young ages at selected sites within these two basins indicate local recharge and potential groundwater susceptibility to surface contamination and/or salt-water intrusion.

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