Contribution of stable isotopes to the understanding of the unsaturated zone of a carbonate aquifer (Nerja Cave, southern Spain) |
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| Authors: | Francisco Carrasco, Bartolom Andreo, Cristina Li n,Jacques Mudry |
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| Affiliation: | aDepartamento de Geología, Facultad de Ciencias, 29071 Málaga, Spain;bFundación Cueva de Nerja, Carmen, 1, 29780 Nerja (Málaga), Spain;cDépartement de géosciences, université de Franche-Comté, 16, route de Gray, 25030 Besançon cedex, France |
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| Abstract: | We analysed the stable isotopes (18O and 2H) of rainwater and drip water within a cave (Nerja Cave) located in the unsaturated zone of a carbonate aquifer. Rainfall is more abundant and presents lower isotopic content in winter, while the volume of drip water is greater and its isotopic content is lower in summer. The flow analysis of 18O through the unsaturated zone confirms the seasonal lag between rainfall and the appearance of drip water in the cave and reveals that the unsaturated zone of the aquifer, in the sector of the cave, behaves like an inertial system with a strong capability to modulate the input signal. To cite this article: F. Carrasco et al., C. R. Geoscience 338 (2006). |
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| Keywords: | Stable isotopes Rainfall Unsaturated zone Drip water Carbonate aquifer Nerja Cave Southern SpainMots-clé s: Isotopes stables Pluie Zone non saturé e Eau de suintement Aquifè re carbonaté Grotte de Nerja Sud de l'Espagne |
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