Analisis Potensi Tanah Longsor Menggunakan Metode Geolistrik di Dusun Plalar Kecamatan Banyubiru Kabupaten Semarang
DOI:
https://doi.org/10.31315/jmel.v9i1.14692Abstract
Landslide in 2019 was the worst incident in Sodong Hamlet and Plalar Hamlet in Kemambang Village. To date, no scientific research has been conducted to assess the landslide potential in this area. Accordingly, this research aims to model subsurface lithological structure in landslide-prone zones -specifically in Plalar Hamlet- using the geoelectrical resistivity geophysical method. Data acquisition was carried out using the Electrical Resistivity Tomography (ERT) technique with a dipole-dipole configuration across six profiles, each extending 160 meters in length. Complementary Vertical Electrical Sounding (VES) surveys employing the Schlumberger array were also conducted at two locations. Interpretation of the data reveals the presence of a slip surface at a depth of approximately 15 meters, with an average slope inclination of 31o. Analysis of rainfall records indicates that landslide occurrences in the region are primarily triggered by high precipitation frequency during the December to February period. The potential runout distance of landslide material is estimate to be around 320 meters, with a projected flow velocity ranging between 1.5 and 2.0 meters per second. Furthermore, the maximum volume of displaceable weathered soil is estimated at approximately 200,000 m3.
Keywords: geoelectrical; landslide; lithology
References
Agista, Z., Rachwibowo, P., & Aribowo, Y. (2014). ANALISIS LITOLOGI DAN STRUKTUR GEOLOGI BERDASARKAN CITRA LANDSAT PADA AREA PROSPEK PANASBUMI GUNUNG TELOMOYO DAN SEKITARNYA, KABUPATEN MAGELANG, PROVINSI JAWA TENGAH. Geological Engineering E-Journal; Vol 6, No 1 (2014): Volume 6, Nomor 1, Tahun 2014.
Fadlin. (2016). Kompleksitas Penyebab Longsor Clapar, Suara Merdeka. Suara Merdeka, 4.
Gijoha, O. T., & Pasau, G. (2017). Identifikasi Akuifer Air Tanah Menggunakan Metode Geolistrik Tahanan Jenis Konfigurasi Dipol-Dipol Di Masjid Kampus Universitas Sam Ratulangi. Jurnal Mipa, 6(1), 17–20.
Harmoko. (2019). Laporan Iklim Harian, BMKG Stasiun Klimatologi. https://www.iklimjateng.info/index.php/layanan-informasi/informasi-iklim
Loke, M. H. (1996). Tutorial: 2-D and 3-D Electrical Imaging Surveys, 2004 Revised Edition. Tutorial : 2-D and 3-D electrical imaging surveys, July, 136.
Lowrie, W., & Fichtner, A. (2020). Fundamentals of geophysics. Cambridge university press.
Martinsen, O. (1994). Mass movements. In The geological deformation of sediments (hal. 127–165). Springer.
Muhardi, M., & Wahyudi, W. (2020). Prediksi Tipe Longsor di Desa Clapar Menggunakan Metode Geolistrik Resistivitas Konfigurasi Dipol-dipol. Jurnal Lingkungan dan Bencana Geologi, 11(2), 115–123.
Rahmad Rizkiarto. (2019). Tanah Longsor di Kab. Semarang. https://bpbd.jatengprov.go.id/main/tanah-longsor-di-kab-semarang-3/?utm_source=chatgpt.com
Rosa, A. (2019, Januari). Tertimpa Tanah Longsor Dua Warga Semarang Terluka.
Septyanto, B., Nafian, M., & Isnaini, N. (2018). Identifikasi Lapisan Batuan di Daerah Bojongsari Depok Menggunakan Metode Geolistrik Resistivitas. Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics, 1(2), 7–14.
Subroto, H. (2021). Data Bencana Alam Kabupaten Semarang Tahun 2012-2020.
Telford, W. M., Geldart, L. P., & Sheriff, R. E. (1990). Applied geophysics. Cambridge university press.
Thanden, R. E., Sumadirdja, H., Richards, P. W., Sutisna, K., & Amin, T. C. (1996). Peta Geologi Lembar Magelang dan Semarang, Jawa. Pusat Penelitian dan Pengembangan Geologi, Bandung.
Tohari, A., Wardhana, D. D., Feranie, S., & Salsabila, G. A. (2024). Identification of sliding surface using electrical-resistivity tomography for landslide mitigation: A case study of the Cibitung Landslide. IOP Conference Series: Earth and Environmental Science, 1314(1). https://doi.org/10.1088/1755-1315/1314/1/012030
Usman, B., Manrulu, R. H., Nurfalaq, A., & Rohayu, E. (2017). Identifikasi Akuifer Air Tanah Kota Palopo Menggunakan Metode Geolistrik Tahanan Jenis Konfigurasi Schlumberger. Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat, 14(2), 65–72.
Wiyadi, S. (2017). Peta Administrasi Kabupaten Semarang.
Yatini, Y., & Suyanto, I. (2018). Identification of slip surface based on geoelectrical dipole-dipole in the landslides hazardous area of Gedangsari District, Gunungkidul Regency, Province of Daerah Istimewa Yogyakarta, Indonesia. IOP Conference Series: Earth and Environmental Science, 212(1). https://doi.org/10.1088/1755-1315/212/1/012013
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Jurnal Mineral, Energi, dan Lingkungan
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
