Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece

In the rural and coastal Almyros basin in Magnesia, Greece, the objective of the current study is the assessment of aquifer vulnerability to seawater intrusion using the GALDIT approach. The Almyros aquifer system’s quality and quantity have declined as a result of unsustainable groundwater abstract...

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Main Authors: Sibianka Lepuri, Athanasios Loukas, Aikaterini Lyra
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Environmental Sciences Proceedings
Subjects:
Online Access:https://www.mdpi.com/2673-4931/25/1/15
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author Sibianka Lepuri
Athanasios Loukas
Aikaterini Lyra
author_facet Sibianka Lepuri
Athanasios Loukas
Aikaterini Lyra
author_sort Sibianka Lepuri
collection DOAJ
description In the rural and coastal Almyros basin in Magnesia, Greece, the objective of the current study is the assessment of aquifer vulnerability to seawater intrusion using the GALDIT approach. The Almyros aquifer system’s quality and quantity have declined as a result of unsustainable groundwater abstraction for irrigation. The Analytical Hierarchy Process (AHP) of Multicriteria Analysis has been used for the modification of the GALDIT index based on the statistics of experts’s responses to questionnaires on the influence of hydrological, hydrogeological, and other parameters. For all methodologies and time periods, the aquifer’s coastline section had high susceptibility levels, whereas the northeast and southeast had lower values. The most vulnerable area of the aquifer changes over the various time periods of analysis.
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spelling doaj.art-636b16e4f5be4cf1974bf0dd5ce75e9e2023-11-18T10:19:06ZengMDPI AGEnvironmental Sciences Proceedings2673-49312023-04-012511510.3390/ECWS-7-14174Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, GreeceSibianka Lepuri0Athanasios Loukas1Aikaterini Lyra2Laboratory of Hydraulic Works and Environmental Management, School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Hydraulic Works and Environmental Management, School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Hydrology and Aquatic Systems Analysis, Department of Civil Engineering, School of Engineering, University of Thessaly, 38334 Volos, GreeceIn the rural and coastal Almyros basin in Magnesia, Greece, the objective of the current study is the assessment of aquifer vulnerability to seawater intrusion using the GALDIT approach. The Almyros aquifer system’s quality and quantity have declined as a result of unsustainable groundwater abstraction for irrigation. The Analytical Hierarchy Process (AHP) of Multicriteria Analysis has been used for the modification of the GALDIT index based on the statistics of experts’s responses to questionnaires on the influence of hydrological, hydrogeological, and other parameters. For all methodologies and time periods, the aquifer’s coastline section had high susceptibility levels, whereas the northeast and southeast had lower values. The most vulnerable area of the aquifer changes over the various time periods of analysis.https://www.mdpi.com/2673-4931/25/1/15groundwaterseawater intrusionGALDITvulnerability indexanalytical hierarchy processAlmyros
spellingShingle Sibianka Lepuri
Athanasios Loukas
Aikaterini Lyra
Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
Environmental Sciences Proceedings
groundwater
seawater intrusion
GALDIT
vulnerability index
analytical hierarchy process
Almyros
title Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
title_full Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
title_fullStr Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
title_full_unstemmed Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
title_short Seawater Intrusion Vulnerability Assessment Using the GALDIT and the Modified GALDIT–AHP Methods: Application in the Coastal Almyros Aquifer, Thessaly, Greece
title_sort seawater intrusion vulnerability assessment using the galdit and the modified galdit ahp methods application in the coastal almyros aquifer thessaly greece
topic groundwater
seawater intrusion
GALDIT
vulnerability index
analytical hierarchy process
Almyros
url https://www.mdpi.com/2673-4931/25/1/15
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AT athanasiosloukas seawaterintrusionvulnerabilityassessmentusingthegalditandthemodifiedgalditahpmethodsapplicationinthecoastalalmyrosaquiferthessalygreece
AT aikaterinilyra seawaterintrusionvulnerabilityassessmentusingthegalditandthemodifiedgalditahpmethodsapplicationinthecoastalalmyrosaquiferthessalygreece