Implementation of geophysical resistivity method in groundwater investigations: Case of Sultan Sazliği-Develi region

Main reason for using geophysical methods in groundwater studies is to prevent unnecessary water drilling by determining depth and thickness of geological structure (aquifer) which holds groundwater, and to reduce the drilling cost related to groundwater production. Geophysical methods have been used successfully in groundwater investigations since they economized from time and cost, in general. In this context, also in our country, geophysical investigations for ground water exploration purpose which started with DSI (State Hydraulic Works) have lately accelerated by contributions of universities and private institutions, as well. In this thesis study, ground water in wetland area of Sultan Sazlığı where is located in Develi Closed Basin was investigated through geophysical resistivity method and in this context, measurements were made at 98 points by DSI via technique of vertical electrical sounding (drilling) in 2009. In the study, firstly, we evaluated inversion of data measured by DSI, as 1-D through IPI2win programme, on seven profiles. Later, same profiles were applied to 1-D DES data via 2-D inversion technique, 2-D inversion of each profile was obtained. In this study, Uchida and Murakami (1990) and Ulugergerli (2017) two algorithm was used and 2-D inversion technique datas were obtained. In inversion, 2-D inversion algorithm based on least squares method was used. With this application/implementation, we tried to make 2-D contribution to both geological and hydrogeological structure of research (investigation) field in wetland area of Sultan Sazlığı.