This research was conducted in Mt. Lompobattang, Pabumbungan Village, District of Ere Merasa, Bantaeng Regency, South Sulawesi using resistivity geoelectric methods. The aim of this study was to determine the subsurface structure of the study area as a first step in the survey to detect geothermal potential (geothermal). Data acquisition was done by using a set of single-channel resistivity meters and in processing data using Res2DINV software to get a 2D cross-section. The measurement shows 3 lines. Based on the measurements show that the subsurface conditions in the study area there are types of rocks in the form of lava, breccia and aquifer, the resistivity value at the study site ranges from 10.8 - 1825 Ωm. With the detection of the lava layer, it can be said that there is a geothermal potential in the area.

The data presented in this paper are related to the characterization of a subsurface layer of coastal area in South Sulawesi. This research will fill the gap in the resistivity method study which is this method not yet use in the coastlines area, especially area influenced by seawater and coastal condition impact like South Sulawesi. The method used in this study is the method of resistivity Wenner configuration by taking the data 1-2 lines each region with lengths 45 m, 75 m, 105 m, and 120 m respectively. Data processing using non-linear least square optimization with that of the 2D inversion software Res2Dinv. The results show that the area is underlain by two layers of lithologic sections. In some sections interpreted by sandy layer, clay, sandstone, alluvium, sandy in seawater and metal minerals. From the analysis of the layers, all regions show the resistivity minimum is 0.00849 Ωm and 8.04 Ωm maximum resistivity. The result of this research can give n insight to study the large coastal area subsurface.