摘要
The Fushe Kuqe costal aquifer is a typical confined alluvial aquifer.The aquifer medium consists of alternating and discontinuous layers of gravel and sand-gravel and silt-clay impermeable layers which have conditioned its multilayer character.The aquifer recharge occurs mainly through water infiltration from the Mat river in the North,and from Droja river in the South,while its natural discharge proceeds to the Adriatic sea.TDS(Total Solids Dissolved)concentration varies from 200-500 mg/L in the North-Eastern area up to over 1,000 mg/L near the coastal area.Such a wide range of TDS values is also confirmed by high(11.89° dH)value of its standard deviation.The HCO3-Ca-Mg and HCO3-Mg-Ca hydrochemical water types dominate in the eastern-north-eastern aquifer sectors,Na-Mg-HCO3-Cl,Na-Cl-HCO3 type in central-western area and,finally,Na-Cl type along the coastal parts of the aquifer.Dissolution of carbonates and sulphate minerals and silicate weathering seems to be the primary processes for the formation of the chemical composition of the groundwater.Chloro-Alkaline Indices CAI-1 and Chadha’s classification diagram distinguished two groundwater compositional groups derived from water-medium chemical reactions and fresh groundwater-seawater mixture,respectively.
