STUDY OF EVOLUTION OF THE SEAWATER INTRUSION IN COASTAL AQUIFERS. CASE STUDY: THE COASTAL AQUIFER SYSTEM OF NW ACHAIA

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Published: Jan 1, 2004
DOI: https://doi.org/10.12681/bgsg.16690
Keywords:
υφαλμύρωση παράκτιοι υδροφόροι ορίζοντες ΒΔ Αχαΐα
K. Βουδούρης
Lab. of Engineering Geology & Hydrogeology, School of Geolofy, Aristotle University of Thessaloniki
K. Νίκας
1.G.M.E.
A. Αντωνάκος
Lab. of Hydrogeology, Dept. of Geology, University of Patras
Abstract

Seawater intrusion problems are recorded in coastal aquifers, which constitute the main sources of drinking water and agricultural irrigation in many countries. The aim of this work is to describe the evolution of the salinity distribution by seawater intrusion, based on results from chemical analyses, of 29 groundwater samples in the NWAchaia area (Peloponnesus, Greece). The study of these data indicates that aquifer waters in large part of area reflect salinization related to seawater intrusion. The occurrence of Ca-CI hydrochemical types of groundwater indicates active seawater intrusion. Cation exchange is the most noticeable hydrogeochemical process in the movement of the saline front in the coastal aquifer. Geographical distribution of Careact index was mapped. The areas with advance or decline of the seawater intrusion front are defined from this map.

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  • Hydrology and Hydrogeology
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