#TITLE_ALTERNATIVE#

• Main Author: KHAIRI (NIM : 10213030), FIKRI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27324
• Institution: Institut Teknologi Bandung

<p align="justify">Geophysics is a science that studies the processes and properties of earth physics using the principles of physics and using quantitative methods for analysis. Geophysics science can be used to determine the state in subsurface of the earth by knowing the physical parameters beneath the surface through measurement. One of measurement method that can be used is geoelectric method. Geoelectric method aims to determine the value of subsurface resistivity by injecting DC current to the surface. In its use, this method can be used in several configurations depending on the conditions and requirements of the measurement. In this final project, 1D geoelectric modeling software was developed for Wenner and Schlumberger configuration. The forward modeling equations used by software are derived from applying the equations of subsurface potential distribution equations to the Wenner and Sclumberger configurations. So, each configuration has a different forward modeling equation. Software uses the principle of damped least-square for invers modeling. Software is tested with synthetic data and field data. In tests with synthetic data, 3 reference models or initial models were used to initiate the inversion process. The test results show that the reference model gives significant effect to the inversion result. so it takes an initial model value close to the actual model. The field data is an underground water exploration data in Al-Quwy'yia, Saudi Arabia. Tests on these data indicate that the depth of ground water deeper in the northeast. This shows the slope of the area. This slope causes the underground water to flow from southwest to northeast. So in the southwest area, the potential for underground water is small.<p align="justify">