The Identification of Aquifer Layers Using Geoelectric Resistivity Method in Jono Oge Village, Sigi Biromaru District, Sigi District

Abstract

Research has been carried out in Jono Oge Village to find out the distribution of aquifer layers after liquefaction caused by the earthquake on 28 September 2018. This research uses Automatic Array Scanning method with a total of 5 passes. Data collection was carried out on 5 tracks, with a total length of each measurement track of 240 meters. The results obtained show that the aquifer layer has a specific resistance value of 59.70 - 149.24 Ωm with a formation factor value of 2 - 5. It is thought to be an aquifer layer consisting of sand and gravel. This layer is at a depth of ± 18 – 39 m below the ground surface with a thickness of around ± 10 – 20 m, so this aquifer layer is thought to have experienced a decrease or change in depth of around ± 10 m after the liquefaction disaster