Application of Electrical Resistivity Method at Jaboi Hot Spring, Sabang

Jaboi geothermal field is a field with a potential of 50 Mwe and will be developed power plant of 2x5 MWe. The purpose of this research is to get a more comprehensive subsurface model with 2D electrical resistivity method around Jaboi hot spring. The configuration used in this study is Wenner-Sclumberger which can describe subsurface models both horizontally and vertically. This method models the subsurface conditions well based on the resistivity value of rocks divided into 3 layers. Then from line JB1, it can be interpreted as a fluid path as evidenced by the presence of manifestations on the surface. But it is not clear that a fluid path is also exist at line JB2. Based on the results of rock interpretation at the study site, it is found that what dominates is tuff mixed with pumice flakes or sandstone and clay tuff mixed with agglomerates. Aquifer layer at the study site can be found starting at a depth of 50 m with a resistivity value of 2-10 Ωm.