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Title:
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Vertical variation in the amplitude of the seasonal isotopic content of rainfall as a tool to jointly estimate the groundwater recharge zone and transit times in the Ordesa and Monte Perdido National Park aquifer system, north-eastern Spain
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Author:
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Jódar Bermúdez, Jorge; Custodio Gimena, Emilio; Lamban, L. J; Martos Rosillo, S.; Herrera Lameli, Christian; Sapriza Azuri, Gonzalo
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Other authors:
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Universitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània |
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Abstract:
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The time series of stable water isotope composition relative to meteorological stations and springs located in the high mountainous zone of the Ordesa and Monte Perdido National Park are analyzed in order to study how the seasonal isotopic content of precipitation propagates through the hydrogeological system in terms of the aquifer recharge zone elevation and transit time. The amplitude of the seasonal isotopic composition of precipitation and the mean isotopic content in rainfall vary along a vertical transect, with altitudinal slopes for d18O of 0.9‰/km for seasonal amplitude and - 2.2‰/km for isotopic content. The main recharge zone elevation for the sampled springs is between 1950 and 2600 m·a.s.l. The water transit time for the sampled springs ranges from 1.1 to 4.5 yr, with an average value of 1.85 yr and a standard deviation of 0.8 yr. The hydrological system tends to behave as a mixing reservoir. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
-Hydrogeology
-Water isotopes
-Seasonal isotopic amplitude
-Transit time
-Recharge
-Alpine hydrology
-Karst hydrology
-Parque Nacional Ordesa y Monte Perdido
-Hidrogeologia -- Investigació |
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Rights:
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Document type:
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Article - Submitted version
Article |
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