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Ahmad Zainuri
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

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Identifikasi Bidang Gelincir Longsor Berdasarkan Metode Electrical Resistivity Tomography (ERT) di Desa Tolango, Kabupaten Gorontalo Utara Tya Ivanka Hiola; Ahmad Zainuri; Ronal Hutagalung
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.32373

Abstract

This study aims to analyze the geological conditions and landslide potential in Tolango Village, Anggrek District, North Gorontalo Regency. The research area is predominantly composed of two main lithological units: andesite and alluvial deposits. Field observations, petrographic analysis, and structural measurements were carried out to determine the geological characteristics. In addition, geoelectrical surveys using the Electrical Resistivity Tomography (ERT) method were conducted to interpret subsurface conditions. The results show that the upper layer (1.25–3.75 m) consists of clayey soil with low resistivity values (8.10–100 Ωm), while the lower layer (up to 15.9 m) is composed of andesite bedrock with higher resistivity values (101–7,600 Ωm). A potential slip surface was identified at the contact between these two layers, which becomes critical when water infiltration increases during the rainy season. Structural features such as thrust faults and joints were also observed, indicating tectonic influence on slope instability. Overall, the integration of geological and geophysical data confirms that the area is highly susceptible to landslides, particularly on steep slopes with impermeable clay-rich layers overlying resistant bedrock.
Co-Authors Abdul Haris PanaI Ana Saputri R Yahya Cindi Claudia Male Daud Yusuf Dela Pusfika Sari Napu Destira Handayani Eksan Farid SM Fitryane Lihawa Ibrahim Sota Intan Noviantari Manyoe Irmawati Irmawati Iswan Dunggio Marini Susanti Hamidun Misnawaty Wantogia Moh. Syach L. Lasahido Mohamad Riski Rahman Muh Kasim Naafi Syahna Firdhaus Biya Noviar Akase Nurdin Mohamad Nurfaika Nurfaika Permana, Aang Panji Pratiansyah Karim Rizky Hizrah Wumu Ronal Hutagalung Siti Chusnul Chatimah Nurrahmah Suci Badriani Ohi Sukirman Rahim Sutriyono sutriyono Syam S. Kumaji Tya Ivanka Hiola Windayani Ika Yunitasari Yayu Indriati Arifin