Conceptual hydrogeological model and aquifer system classification of a small volcanic island (La Gomera; Canary Islands)

Auteur(s) et Affiliation(s)



Description :
This study takes advantage of the large number of outcrops exposing the inner structure of La Gomera (Canary Islands), due to its inactivity during the last 2.5 Ma, to develop a conceptual groundwater model. Based on a volcanostratigraphic model, 5 hydrostratigraphic units have been defined that include 2 main aquifers and volcaniclastic deposits located between them that control the vertical movement of the groundwater. The island has been classified into 4 aquifer systems or water management units based on their hydrogeological features that permit a sustainable and independent management of the resources of one aquifer system in relationship with the other ones. The AA. have identified 4 general groundwater flow paths : 1) groundwater in the Upper aquifer discharging to the sea; 2) groundwater in the Upper aquifer springing out along the main ravines; 3) groundwater in the Basal aquifer impounded by dikes and; 4) groundwater in the Basal aquifer discharging to the sea.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, vol. 114, p. 119-128, nombre de pages : 10, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena