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Groundwater Quality Assessment of the Limnos Island Volcanic Aquifers, Greece
Author(s) -
Panagopoulos George,
Panagiotaras Dionisios,
Giannoulopoulos Panagiotis
Publication year - 2013
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143012x13373575831439
Subject(s) - aquifer , groundwater , weathering , hydrogeology , flysch , geochemistry , geology , volcano , soil salinity , hydrology (agriculture) , environmental science , soil water , soil science , sedimentary rock , geotechnical engineering
Limnos Island in Greece, which has been the subject of extensive hydrogeological research, contains confined volcanic aquifers that overlie impermeable flysch. Groundwater salinization is usually the effect of seawater intrusion, and results from a combination of factors such as low annual areal precipitation and exploitation of aquifers for civil, commercial, and agricultural purposes. Areas with intense agricultural activities have also increasingly observed these effects. A geochemical evaluation on the basis of multiple ion (Ca 2+ , Mg 2+ , Na + , K + , HCO 3 ‐ , Cl ‐ , SO 4 2‐ , NO 3 ‐ ) concentrations and physicochemical parameters distribution revealed that ion exchange is the dominant hydrogeochemical process. However, the enrichment of groundwater in potassium and magnesium results from rock and mineral weathering and dissolution.