Caracterización hidrogeoquímica e isotópica de la cuenca de alta montaña del río Alhorí (Sierra Nevada, Sur de España)
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Abstract
Las acequias de careo, elementos hidráulicos de un sistema an-cestral de gestión del agua, juegan un papel esencial en el funciona-miento hidrológico de las cuencas de Sierra Nevada (sur de España). En este estudio se lleva a cabo una caracterización hidroquímica e isotópica de las aguas, tanto superficiales como subterráneas, de la cuenca de alta montaña del río Alhorí. El estudio se ha realizado con datos procedentes de 46 muestras tomadas en junio de 2020. Tras el análisis de datos se evidencia un marcado patrón altitudinal que rige las características hidrogeoquímicas e isotópicas del agua. Además, procesos como la evapoconcentración, provocados por las acequias de careo, quedan claramente identificados. Por último, queda de-mostrada a partir de esta investigación la existencia de flujos de cor-to recorrido en las aguas subterráneas de la cuenca del río Alhorí
The Careo ditches, hydraulic elements of an ancestral water ma-nagement system, play an essential role in the hydrological func-tioning of watersheds in Sierra Nevada (South of Spain). This study seeks to characterize the hydrochemical and stable isotope compo-sitions of surface water and groundwater in the high mountain wa-tershed of the Alhorí river. For this purpose, 46 samples from springs and surface streams were collected in June 2020 and their content in major ions, hydrogen and oxygen isotopes was analysed. The re-sults show that altitude is clearly influencing the characteristics of the sampled waters. Furthermore, artificial groundwater recharge with careo ditches favours evapoconcentration. Overall, this research proves the existence of short-distance flows in the groundwater of the Alhorí river basin
The Careo ditches, hydraulic elements of an ancestral water ma-nagement system, play an essential role in the hydrological func-tioning of watersheds in Sierra Nevada (South of Spain). This study seeks to characterize the hydrochemical and stable isotope compo-sitions of surface water and groundwater in the high mountain wa-tershed of the Alhorí river. For this purpose, 46 samples from springs and surface streams were collected in June 2020 and their content in major ions, hydrogen and oxygen isotopes was analysed. The re-sults show that altitude is clearly influencing the characteristics of the sampled waters. Furthermore, artificial groundwater recharge with careo ditches favours evapoconcentration. Overall, this research proves the existence of short-distance flows in the groundwater of the Alhorí river basin







