Application of Geoelectrical Survey and Time-Lapse Resistivity with Groundwater Data in Delineating a Groundwater Potential Map: A Case Study from Phuket Island, Thailand

Abstract

Phuket is well-known around the world as a popular tourist destination. Tourism-related population growth depends more on groundwater as the only available source of potable water in Phuket. The proper precautions must be taken to reduce the risk of spending large sums of money in sinking abortive boreholes, and a groundwater potential map would enhance the success rate of future groundwater exploration and exploitation in the study area. Geoelectrical surveys were carried out in this study to collect electrical properties of the subsurface, and the Dar-Zarrouk parameters (DZP) were calculated using the geoelectrical data. The first thematic groundwater potential map was constructed using the interpretation of DZP, while the second thematic groundwater potential map was created using the basis maps of the depth-of-basement and aquifer thickness parameters. Finally, two thematic maps based on geographic information system (GIS) environments were overlaid on a groundwater potential map of Phuket. However, in order to provide a reliable assessment of groundwater potential, time-lapse electrical resistivity imaging was used to confirm the area of the high-potential zone indicated on the map. The map created by this study is aimed to act as a reference for future groundwater exploration and exploitation, preventing water supplies from becoming unsustainable through botched borehole drilling for groundwater production.

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“…Therefore, recording and evaluating the outcomes of subsurface hydrological inquiries can provide a better alternative approach to traditional groundwater potential mapping. A cohesive method combining Remote sensing (RS) and Geographic information system (GIS) approach can serve as a superior decision support system for intelligently assessing Groundwater Potential (GWP), groundwater quality suitability, discharge, recharge, and storage mapping [ [17] , [18] , [19] , [20] , [21] ]. Mohammed et al [ [22] , [23] ] integrated RS and GIS techniques with the Analytic hierarchy process (AHP) method for effectively evaluating potential groundwater recharge zones in the Iraqi Western desert region.…”