Author(s)

G.-A. Tselentis & N. Piliouras

Abstract

Tomographic methods, after their successful application in medicine, have started recently to be applied in various geological problems. In the present work, we have developed a methodology to delineate karst within coastal aquifers in order to locate the most appropriate sites for constructing fresh water wells. A simultaneous iterative reconstruction technique has been developed and was complemented with an accurate ray- tracing method in order to obtain an accurate tomographic image of the karst. The technique was applied to a coastal aquifer in central Greece and revealed a low velocity zone within the limestone which was later verified by drilling to correspond to a well developed karst within the rock mass, discharging large quantities of fresh water into the sea. 1 Introduction Tomographic methods after their successful application in nuclear me

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