Landslide Potential Zone Identification Using Electrical Resistivity Tomography Modeling

Muhammad Budzar Alghifarry (Geophysics Engineering, Engineering Faculty, Universitas Lampung)
Ordas Dewanto (Geophysics Engineering, Engineering Faculty, Universitas Lampung)
Rahmat Catur Wibowo (Geophysics Engineering Department, Engineering Faculty Universitas Lampung)

Journal of Engineering and Scientific Research (JESR)
Vol. 5 No. 2 (2023)

The Pidada area, Panjang sub-district, Bandar Lampung City, is located on the physiography of Bukit Barisan and is also influenced by the movement of the Sumatran fault and the Lampung-Panjang fault, so the morphological condition is hilly with steep slopes which cause natural disasters such as landslides. In this study, the knowledge of subsurface rock lithology and slip-slide-prone zones was carried out using the Wenner-Schlumberger geoelectric method. Based on the Wenner-Schlumberger configuration, the top layer consists of weathered rock associated with clay tuff and sandy tuff with a resistivity of 7.2 ?m - 135 ?m. Coarse-grained tuff and fine-grained tuff with resistivity values ??of 135 ?m - 437 ?m, and the third layer combines breccia and igneous rock from the Tarahan Formation with resistivity values ??of more than 437 ?m. The clay sand layer acts as a slip plane. The type of landslide developed in the research area is a crawling soil landslide.