NDLI: A statistical approach in investigating the hydrogeological significance of remotely sensed lineaments in the crystalline mountainous terrain of the island of Naxos, Greece

Content Provider	Springer Nature Link
Author	Galas, Irene Rokos, Demetrius
Copyright Year	2006
Abstract	A map indicating zones related to groundwater on the mountainous terrain of the island of Naxos, Greece, was produced, using statistics, remote sensing and geographic information system (GIS) techniques. Naxos mainly consists of polydeformed and polymetamorphosed crystalline formations where groundwater is restricted to secondary porosity; its movement is erratic and occurs along lithological contacts, solution openings, faults and fractures. As in the most central Aegean islands, water in Naxos is a scarce commodity. Many dry holes have been drilled. It is known that in areas of such geology, linear features may play a significant role in their hydrogeological regime. Various lineaments’ directional properties were calculated and statistically tested against collected spring data using GIS techniques in an attempt to evaluate the hydrogeological significance of remotely sensed lineaments. Based on the results achieved, a map was prepared to contribute to conventional ground surveys in the selection of drilling sites. The reliability of the map was tested with existing borehole data. The results obtained encourage the use of statistical analysis on remotely sensed lineaments for groundwater targeting studies in crystalline mountainous areas.Une carte indiquant les zones relatives aux eaux souterraines dans la région montagneuse de l’Île de Naxos en Grèce, a été dressée au moyen de techniques statistiques, la télédétection et un SIG. Naxos est principalement constituée de formations cristallines poly-déformées et poly-métamorphosées, dans lesquelles l’eau souterraine est restreinte à une porosité secondaire, tandis que ses mouvements sont erratiques et apparaissent le long des contacts lithologiques, les ouvertures de dissolution, les failles et les fractures. Comme dans la plus part des îles du centre de l’Egée, l’eau à Naxos est restreinte. Beaucoup de puits secs ont été forés. Il est connu que dans un tel environnement géologique les linéaments jouent un rôle important au regard du régime hydrogéologique. Diverses propriétés directionnelles de linéaments ont été calculées, et testés statistiquement envers des données de sources utilisant les techniques SIG, de telle manière à évaluer la signification hydrogéologique des linéaments relevés. Sur base des résultats, une carte a été dressée, comme contribution à la recherche plus conventionnelle de forages, sur site. La véracité du document a été évaluée, par comparaison des forages existants. Les résultats obtenus encouragent l’utilisation des analyses statistiques et du levé des linéaments dans les milieux cristallins montagneux.Se generó un mapa que representa zonas relacionadas con agua subterránea en el terreno montañoso de la isla Naxos, Grecia, utilizando técnicas estadísticas, sensores remotos, y un Sistema de Información Geográfico (SIG). Naxos consiste principalmente de formaciones cristalinas polideformadas y polimetamorfoseadas donde el agua subterránea está restringida a la porosidad secundaria, su movimiento es errático y ocurre a lo largo de contactos litológicos, aberturas de solución, fallas y fracturas. De igual manera que en la mayoría de islas del mar Egeo, el agua en Naxos es un artículo escaso. Se han perforado muchos pozos secos. Se conoce que en áreas con este tipo de geología las estructuras lineales pueden jugar un papel significativo en el ambiente hidrogeológico. Se han calculado varias propiedades direccionales de los lineamientos y se han evaluado estadísticamente confrontados con datos colectados en manantiales utilizando para ello técnicas SIG, en un intento para evaluar el significado hidrogeológico de lineamientos de sensores remotos. En base a los resultados alcanzados se preparó un mapa para contribuir a los levantamientos convencionales del terreno en la selección de los sitios de perforación. Se evaluó la confiabilidad del mapa en base a datos de pozos existentes. Los resultados obtenidos estimulan el uso de técnicas estadísticas en el análisis de lineamientos de sensores remotos para estudios exploratorios de agua subterránea en áreas montañosas cristalinas.
Starting Page	1569
Ending Page	1581
Page Count	13
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	14
Issue Number	8
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-07-11
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Naxos Crystalline rocks Lineaments Groundwater exploration Geographic information system Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Geology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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