Geophysical and Borehole Logging Data Correlation: A Study of Subsurface Characterization

Abstract

Subsurface geological data play an important role in groundwater exploration activities and other engineering geology applications. However, this data is still minimal and not well documented in several locations and related agencies in the Pasir Muncang, Kedung Banteng, and Sukanegara areas of Banyumas Regency. Most of the research locations are composed of soil from bedrock weathering, and many other locations have been filled with the results of human activities, such as rice fields, industry, and residential areas. This research is expected to provide a guideline for a more accurate study of subsurface geology using subsurface resistivity surveys or other geophysical methods. This study uses a correlation analysis of data from subsurface resistivity survey interpretation results, resistivity logging, and lithology descriptions of groundwater drilling wells. The data comes from three nearby locations: Kedung Banteng, Pasir Muncang, and Sukanegara. The subsurface resistivity survey data is accurate and can be used as a guide for subsurface geological studies up to a depth of 25 metersThe correlation between subsurface resistivity survey data and resistivity logging data reached 91%, but decreased with increasing depth.