Rahmat, C. Wibowo and Muh, Sarkowi (2023) A combined of electrical resistivity tomography and structure from motion method for landside-prone zone analysis in East Kota Agung Region. The 7th International Conference of Science, Technology, and Interdisciplinary Research (IC-STAR 2021), 2601 (020001). 020001-1-020001-8. ISSN 1551-7616
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Abstract
Indonesia's territory has a high level of risk of landslides. One of them is Batu Keramat Village, Tanggamus district with steep topographical undulation, making it a landslide-prone area. This research aims to analyze landslide- prone zones based on Structure from Motion (SfM) and the method of electrical resistivity tomography (ERT). The research location has very potential for landslides, supported by signs on the surface and clarified with a subsurface image. From the SfM analysis, the research location has a steep slope (> 600) with a slope height of about 30 m. Young volcanic rocks dominate in the study area in breccias, lava, and tuff with andesite-basalt composition. There are several Tertiary-aged andesite rocks exposed which are thought to be bedrock at this location. Based on the ERT model, the resistivity distribution value is in the range of 70-2100 ohm.m. The subsurface model has three layers divided into topsoil in the upper part, which is indicated by a resistivity value of 350 - 500 ohm.m. The clay layer is indicated by a resistivity value of 70 - 120 ohm.m,and bedrock (andesite) is indicated by 1000 - 2100 ohm.m. The clay layer can become a slip surface and cause the study area to be prone to landslides.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Geofisika |
| Depositing User: | MUHAMMAD S |
| Date Deposited: | 31 Jul 2023 09:40 |
| Last Modified: | 31 Jul 2023 09:40 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/52322 |
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