Identification of Shallow Fault with Seismic Refraction Modelling in Gondang Area, Bojonegoro

There are various considerations in determining whether a field is said to have geothermal potential or not. One of them is the appearance of shallow faults in the area. This shallow fault can function as a permeable layer that is used as a fluid flow path in the geothermal system. Due to the emergence of manifestations around Mount Pandan in the Gondang area, Bojonegoro, seismic refraction measurements are also needed that can support and validate the geothermal potential in the area with the hope of shallow faults that are visible through the interpretation of seismic wave propagation velocity. This measurement produces an anomaly that is thought to be a shallow fault on the track that passes through the main fault, namely on tracks 1, 2, and 5, not far from the manifestation of the Banyukuning hot spring. This is also reinforced by direct observation of the surface conditions as a result of the appearance of shallow faults.