Implementation of Frequency Characteristics Technique in Ground Penetrating Radar to Identify Steam Vent

Abstract

Ground Penetrating Radar (GPR) is a geophysical method that widely used and developed in a lot of fields because of the non-destructiveness and relatively high resolution of the method. Despite all that, this method can produce a biased result because of factors that could affect the anomaly. To prevent those, advanced analytical methods are used, one of them is frequency characteristic analysis technique. Frequency characteristic technique used GPR’s frequency content to then analyze it in frequency and time domain. The result is quantified in various characters of frequency. This technique is used to help identify steam vents in geothermal environment in Darajat, Garut. Finite difference time domain (FDTD) method is used to generate a synthetic model then we applied frequency characteristic technique to analyzed and compared with the field data to identify the property of steam vent. Based on the result, frequency characteristic technique can be used to help identify presence of a steam vent.