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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) SainsTech Innovation Journal
Syarifatul Ulfah
Universitas Qamarul Huda Badaruddin Bagu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Materials Science & Nanotechnology Physics

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ANALISIS DAERAH POTENSI LONGSOR KALIJAGA SELATAN MENGGUNAKAN GEOLISTRIK WENNER Syarifatul Ulfah; Agus Winardi; Nuraini Nanda i
SainsTech Innovation Journal Vol. 8 No. 2 (2025): SIJ VOLUME 8 NOMOR 2 TAHUN 2025
Publisher : LPPM Universitas Qamarul Huda Badaruddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37824/sij.v8i2.2025.1137

Abstract

Landslides are a disaster that can occur at any time without warning. Therefore, identifying areas with the potential to become slip surfaces is a crucial mitigation step. The risks and losses from these disasters can be minimized or even avoided. One method used to identify potential landslide areas is the geoelectric method. This study used the Wenner configuration resistivity method. This study, conducted on two tracks, indicated the potential for slip surfaces ranging from moderate to very deep. With resistivity values ??of 23–503 ohm.m, the soil is interpreted as clay and is indicated as a potential landslide area at a depth of 2–15 meters
Integrated Electrical Resistivity Tomography and SPAC Microtremor for Local Site Response Assessment toward Sustainable Disaster Risk Reduction: A Case Study of Setiling Village, Central Lombok Syarifatul Ulfah; Muhamad Yamin; Bagus Widhi Dharma S.
Jurnal Penelitian Pendidikan IPA Vol 12 No 7 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i7.15759

Abstract

Local geological conditions strongly influence seismic-wave propagation and earthquake ground response, particularly in heterogeneous volcanic environments. This study aimed to characterize shallow subsurface conditions and assess local seismic site response in Setiling Village, Central Lombok, Indonesia, by integrating two-dimensional Electrical Resistivity Tomography (ERT) using the Wenner–Schlumberger configuration with Spatial Autocorrelation (SPAC)-based microtremor analysis. Three ERT profiles and twenty SPAC measurement points were acquired to evaluate subsurface heterogeneity and near-surface stiffness. The ERT results revealed significant resistivity variations associated with volcanic lithology, weathering intensity, moisture content, and groundwater conditions. Conductive zones (<100 Ωm) were interpreted as highly weathered volcanic deposits, whereas higher resistivity zones (>600 Ωm) represented relatively competent volcanic materials. SPAC-derived Vs30 values ranged from 150 to 525 m/s, corresponding to NEHRP Site Classes C, D, and E. Integrated interpretation demonstrated a consistent relationship between resistivity and Vs30, indicating that progressive volcanic weathering simultaneously reduces electrical resistivity and subsurface stiffness. The integrated ERT–SPAC approach provides a reliable framework for village-scale seismic site characterization, supporting seismic hazard assessment, risk-informed spatial planning, resilient infrastructure development, and disaster risk reduction in tropical volcanic regions.
Co-Authors Agus Winardi Bagus Widhi Dharma S. Muhamad Yamin Nuraini Nanda i