The Fushe Kuqe costal aquifer is a typical confined alluvial aquifer.The aquifer medium consists of sand-gravel and silt-clay layers intercalation which gave it a multilayer character.The aquifer recharge occurs mainl...The Fushe Kuqe costal aquifer is a typical confined alluvial aquifer.The aquifer medium consists of sand-gravel and silt-clay layers intercalation which gave it a multilayer character.The aquifer recharge occurs mainly by water infiltration from the Rver Mat in the North,and from River Droja in the South.The water flow direction is from northeast to southwest and from southeast to northwest,discharging to the Adriatic Sea.Based on the chloride and TDS(Total Solids Dissolved)content in groundwater,an advancement of sea water intrusion into aquifer was evidenced.The direction of sea water wedge is from coastal south-western sectors towards the north-eastern ones.Sample No.6,8,9 and 10 show chloride concentrations over 100 mg/L and Na/Cl ratios less than 0.86 implying that the groundwater is impacted by sea water intrusion.SR(Simpson Ratio)values of 1.15 and 1.09 for water sample No.8 and 10 are indications of a slight seawater influence,while groundwater of sample no.6 and 9 have SR values of 6.02 and 12.35 which are typical for a highly contamination by sea water.All the points of sampled groundwater fall above the GMWL,indicating that they have suffered a preliminary evaporation before entering the aquifer,likely in the hydropower lakes of Ulza and Shkopet upstream the River Mat course.Despite the narrow range ofδ18O andδ2H values(-6.80‰to-8.00‰and-54.00‰to 42.00‰,respectively),the points of sample No.6,8,9,10 fall on the fresh water-seawater mixing line,indicating the influence of the seawater intrusion.展开更多
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 conditione...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.展开更多
文摘The Fushe Kuqe costal aquifer is a typical confined alluvial aquifer.The aquifer medium consists of sand-gravel and silt-clay layers intercalation which gave it a multilayer character.The aquifer recharge occurs mainly by water infiltration from the Rver Mat in the North,and from River Droja in the South.The water flow direction is from northeast to southwest and from southeast to northwest,discharging to the Adriatic Sea.Based on the chloride and TDS(Total Solids Dissolved)content in groundwater,an advancement of sea water intrusion into aquifer was evidenced.The direction of sea water wedge is from coastal south-western sectors towards the north-eastern ones.Sample No.6,8,9 and 10 show chloride concentrations over 100 mg/L and Na/Cl ratios less than 0.86 implying that the groundwater is impacted by sea water intrusion.SR(Simpson Ratio)values of 1.15 and 1.09 for water sample No.8 and 10 are indications of a slight seawater influence,while groundwater of sample no.6 and 9 have SR values of 6.02 and 12.35 which are typical for a highly contamination by sea water.All the points of sampled groundwater fall above the GMWL,indicating that they have suffered a preliminary evaporation before entering the aquifer,likely in the hydropower lakes of Ulza and Shkopet upstream the River Mat course.Despite the narrow range ofδ18O andδ2H values(-6.80‰to-8.00‰and-54.00‰to 42.00‰,respectively),the points of sample No.6,8,9,10 fall on the fresh water-seawater mixing line,indicating the influence of the seawater intrusion.
文摘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.
