Identification of Landslide Potential using Electrical Resistivity Tomography Method Wenner-Schlumberger Configuration in Sampiro, Bolaang Mongondow Utara, North Sulawesi

Abstract

Trans-Sulawesi road was being cut off in the Sampiro village, Bolaang Mongondow Utara district, North Sulawesi caused by the soil movement. This problem gives a loss to the villagers and hampers the economy. This research was using geoelectrical resistivity method and supporting data in the form of well data and standard penetration test value. Geoelectrical resistivity measurements in Sampiro were carried out in 3 measurement trajectories, with various resistivity values. The resistivity value at 4-10 Ωm is a layer of high porosity alluvium with 10 meters of thickness and there is a potential for landslides. Resistivity value at 10.3-40 Ωm is a layer of sandstone clay and sandstone which having rainwater intrusion. Massive sandstone and claystone layers with resistivity values at 40-70 Ωm.

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