Hydrochemical general characteristics of the Friuli Plain’s deep aquifers (northern Italy)

Abstract

In order to improve the knowledge on the deep groundwater resources of the diffusely exploited multilayered aquifer system of the Low Friuli Plain (BPF) (Northern Italy), water samples coming from 37 wells, 17 springs and 4 rivers have been collected and analysed in 2007. The main anions and cations’ concentrations (with a particular interest in sulphate and strontium contents, natural tracers of Tagliamento River’s waters), the geochemical facies and the correlations between the main elements have been determined. The preliminary results showed congruence with the general chemical patterns coming from the scientific literature and evidenced remarkable local chemical differences (related both to the geographycal distribution of the measurement sites and to the filters’ depth) due to localized geothermal anomalies, to different distances from the coastline and presumably to circulations partly developing in pre-quaternary deposits.