Nuevos datos sobre el balance hídrico en el acuífero de la Vega de Granada a partir de un modelo de flujo
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Abstract
En este trabajo se aportan nuevos datos sobre el balance hídrico del
acuífero detrítico de La Vega de Granada a partir de los resultados obtenidos
con la realización de un modelo de flujo en dos dimensiones y en régimen
transitorio. El modelo ha sido calibrado y validado satisfactoriamente y
arroja unos valores de recursos medios anuales de 132 hm3, cifra que queda
por debajo de la propuesta por otros autores. Asimismo, se observa una tendencia
descendente durante los últimos 50 años en los aportes al acuífero
justificada por la menor recarga que se produce a partir del retorno de riegos
debido a la sustitución de los campos de cultivo por zonas urbanizadas.
La explotación del acuífero mediante bombeos no refleja, sin embargo, una
tendencia paralela en este mismo periodo de tiempo
In this paper new data about the water budget in the detrital aquifer of La Vega de Granada are presented based on the results of a 2D transient flow model. The model has been calibrated and validated successfully. The water budget obtained presents 132 Mm3 as annual resources that are lower than the results obtained in previous studies. Furthermore, during the last 50 years a decreasing trend in the inputs to the aquifer is detected that is related to a decrease in the recharge due to the land use change from crops to urban areas. Nevertheless the pumping in the aquifer is not changing during the same period of time
In this paper new data about the water budget in the detrital aquifer of La Vega de Granada are presented based on the results of a 2D transient flow model. The model has been calibrated and validated successfully. The water budget obtained presents 132 Mm3 as annual resources that are lower than the results obtained in previous studies. Furthermore, during the last 50 years a decreasing trend in the inputs to the aquifer is detected that is related to a decrease in the recharge due to the land use change from crops to urban areas. Nevertheless the pumping in the aquifer is not changing during the same period of time







