Consideraciones sobre la hidroquímica del acuífero de la Cubeta de Pulpi (Almería)

Abstract

From data obtained in different points of the cubeta de Pulpí aquifer, the principal physicochemical characteristics of ground waters are studied. The waters have a high salinity, with of conductivity between 2,500 and 4,500 micromhos/cm, and are calcium-sodium-magnesium sulphate water types. The study is complemented with cluster and factorial analysis of variables and observations. The origin of ions have a direct relationship with the evaporitic and siliceous rocks, possible mineralitations, and urban and agricultural pollution. The use of aquifer waters for irrigation causes the salinity and alkalinity of the soil. The liquid and solid wastes from urban and cattle raising activities, and the fertilizers of the agriculture are the principal contamination sources; the nitrate concentration is higher than 50 mg/l and the amonium concentration is aboye 0,5 mgll. The temperature and the chemical composition of the water shows a thermic anomaly directly related with the tectonic activity in the area.