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Journal of Geoscience, Engineering, Environment, and Technology
Published by Universitas Islam Riau
ISSN : 2503216X     EISSN : 25415794     DOI : 10.25299
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science Physics
JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 686 Documents
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Health Infrastructure Service Management Using Nonlinear Pushover Analysis Based on Earthquake Response Spectrum Paikun; Nelfia, Lisa; Suhendi, Cece; Aulia, Riza; Dunu, Williams
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.25613

Abstract

This study aims to determine the inter-floor shift due to earthquake spectrum response using nonlinear pushover analysis in a clinic building located in the Cimandiri Fault Zone as a basis for healthcare infrastructure management. This is very important because healthcare infrastructure is a place that must be available in any condition, even after an earthquake disaster. The Sukabumi area is an area located in the Cimandiri Fault Zone, so buildings in this area must be specifically designed to remain intact during disasters, especially earthquakes that often cause building damage. The research object that is the case study in this study is a 4-story clinic building that uses a reinforced concrete structure. The method used in the earthquake spectrum response analysis refers to SNI 1726:2019 and SNI 2847:2019, which have available spectral response webs, while the nonlinear pushover analysis uses the ATC-40 and FEMA-440 methods implemented in ETABS. The results of the analysis show that the inter-floor shift on the second and third floors exceeds the specified service limits, so it can be stated that the clinic building structure service in this case study requires damage control (DO). This can be seen based on the analysis results that the inter-floor shift of 201 mm in the X direction and 190 mm in the Y direction can cause moderate damage that can be repaired, so that health infrastructure service management is very necessary. Controlling recurrent damage due to earthquakes can be done with three retrofit scenarios consisting of the addition of shear walls, column coating, and steel reinforcement. The three scenarios are assessed and ranked based on the reduction of shifts, repair duration, and functional disruption. The addition of shear walls is the main recommendation without disrupting functionality, while column coating and the addition of steel reinforcement can disrupt health service operations. Retrofit scenarios can be recommended to support a sustainable health service infrastructure system in earthquake-prone areas. Earthquake spectrum response is a key factor that needs to be reviewed in building damage analysis as a basis for risk control management of health service infrastructure.
Front matter JGEET Vol 10 No 4 2025 Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
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Abstract

Front matter JGEET ICUPERTAIN Vol 10 No 04-02 2025 Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Special Issue from The 2nd International Conference on Upstream Energy Technology and Digitalization
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Abstract

Air Pollution Dispersion Analysis and Wind Resource Characterization in Coastal Bengkulu Using Meteorological Observation Data of 2021-2024 Manik, Yosef Barita Sar; Arifah Arsanti; Arjuna Nayaka; Azka Leona Mayriza; Amei, Ivander Adonis; Miftakhul Syafina; Hutahaean, Rolia Sesna
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Air pollution risk in coastal Bengkulu, influenced by monsoonal system-shifting wind patterns and increasing anthropogenic necessitates, requires wind pattern analysis at the areas of Muko-Muko, Pulau Baai, and Seluma, which are influenced by open land, airport activities, industrial emissions, and marine-terrestrial interactions, which require WRPlot for accurate dispersion simulation and eco-friendly spatial planning. The aim of this study is to examine the characteristics of the wind and prevailing directions of dispersion in three selected points that represents pollution-prone area at coastal regions of Bengkulu Province: Muko-Muko, Baai Island, and Seluma. The data analysis involved processing daily wind speed and direction hourly data obtained from NASA's POWER period of 2021 to 2024. Wind rose plots of directional frequencies and distributions of the wind classes were created using WRPlot 8.0.2. Results indicate predominant wind directions at all three selected points are 57% of the resultant vector during dry season and 68% of the resultant vector during wet season, with wind speeds ranging from 0.50 to 2.10 m/s, accounting for up to 88.4% of records. Calms varied from 3.1% to 10.8%, and wind speeds above 5.70 m/s were not recorded. These findings suggest that Bengkulu’s coastal wind regime is characterized by persistently light winds. Although such conditions limit the potential for large-scale wind energy utilization, they play a critical role in air pollution dispersion modelling and environmental risk assessment.
Analysis of Earthquake Risk Zones Using the Horizontal to Vertical Spectral Ratio (HVSR) Method at Vital Objects of Radin Inten II Airport, Natar Market, and Branti Market Aditya, Muhammad; Haerudin, Nandi; Maulida, Nanda Hanyfa
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

South Lampung, Indonesia, lies within the tectonically active Indo-Australian–Eurasian subduction zone, influenced by the Lampung-Panjang and Menanga Faults. Volcanic and volcaniclastic lithologies overlying thick alluvial sediments increase seismic amplification potential. This region hosts critical infrastructure including airports and markets, but seismic hazard at these sites has not been comprehensively evaluated. Therefore, this study aims to assess seismic hazard at three critical infrastructure sites: Radin Inten II Airport, Natar Market, and Branti Market. The earthquake hazard zones were analyzed using the Horizontal to Vertical Spectral Ratio (HVSR) method, which effectively estimates site resonance frequency ( ), amplification ( ), and shear-wave velocity ( ) without requiring active seismic sources or boreholes, making it ideal for rapid microzonation in urban-vital areas. Unlike previous HVSR studies in Lampung that focused on single-parameter ( ) mapping, this study integrates five parameters ( ,  ,  ,  , and  ) to produce a multi-criteria hazard classification. Microtremor data were collected from 25 measurement sites using the Seismometer Rakyat Indonesia (SRI) and processed using Geopsy, Excel, and MATLAB. These analyses yielded dominant frequency ( ) ranging from 0.6-14 Hz, amplification factor ( ) from 0.8-5.2, dominant period ( ) from 0.07-1.6 s, seismic vulnerability index ( ) from 0.06-3.9 cm/s², and shear-wave velocity up to a depth of 30 meters ( ) from 254-1433 m/s. These parameters were then spatially integrated to assess the seismic hazard level at each study site, with   and   as primary classifiers and  ,  ,   as corroborating indicators. The results showed that Radin Inten II Airport and Branti Market exhibit stable seismic characteristics with high dominant frequencies (>6 Hz), low amplification (<3), short dominant periods (<0.25 s), low  (<1 cm/s²), and high  values (>350 m/s), thus categorizing them as low-risk zones. Meanwhile, Natar Market is located within an area showing moderate dominant frequency (4-6.67 Hz) and amplification (3-6), along with a longer dominant period (0.25-0.4 s) and high  values (>350 m/s), placing it in a medium-risk zone. These findings provide a scientific basis for site-specific seismic risk mitigation at critical infrastructure in South Lampung.
Slope Stability Analysis Using the FEM Method and Landslide Vulnerability Zoning Using the GIS Kriging Method as the Basis for Structural-Non-Structural Mitigation Formulation Against Landslide Disasters in Sumberarum Village, Songgon District, Banyuwangi Regency, Indonesia Sandi, Dora Melati Nurita; Sandi, Enes Ariyanto; Santoso, Catur Bejo
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Songgon District is one of the areas in Banyuwangi Regency that has a high vulnerability to landslides due to steep slope topography, high rainfall, and tectonic and volcanic activity from Mount Raung. This study aims to analyze slope stability, identify landslide-prone zones, and develop an appropriate disaster mitigation strategy matrix in the area. The research method used is an integrative approach that combines numerical modeling based on the 3D Finite Element Method, and Geographic Information System (GIS)-based spatial mapping with Kriging interpolation techniques. Slope stability analysis was conducted at 15 critical review points spread across the Songgon area. The modeling results show significant variations in slope stability levels, where several critical points show safety factors below the safety limit FK < 1.25. Based on the spatial zoning generated through GIS Kriging, the study area is mapped into three vulnerability zones: low, medium, and high vulnerability zones. As an output of the mapping and analysis of geotechnical parameters, a comprehensive disaster mitigation matrix was prepared, including structural recommendations (such as slope reinforcement and drainage improvements) and non-structural recommendations (such as community-based early warning systems and evacuation route mapping) to minimize the risk of future disaster impacts.
Site Characterization Based on Shear-Wave Velocity Using Multichannel Analysis of Surface Waves (MASW) Method in Urban Areas of Aceh Besar, Indonesia Darisma, Dian; Salsabila, Rifa Salma; Asyqari, Amir; Naufal, Haris Hartsa; Amsir; Asrillah; Masrurah, Zakia; Tarmizi; Marlinawati, Intan; Manalu, Kasih D; Muhni, Akmal; Azmi, Nurul
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Seismic site characterization is needed for earthquake risk mitigation and also for geotechnical infrastructure design. Multichannel Analysis of Surface Waves (MASW) can be used for seismic site characterization. The method extracts shear-wave velocity (Vs) profiles from surface wave analysis that reveal geotechnical conditions and subsurface structures. This study aims to characterize the subsurface layers using the MASW method in Aceh Besar. Data acquisition was carried out along three measurement profiles, each 69 meters long and with a receiver spacing of 3 meters. Shear-wave velocities (Vs) of the subsurface soil and rock layers were estimated using dispersion curve analysis and 1D inversion. The surface wave spectral analysis produced a high-quality dispersion at the fundamental mode frequency of 20–30 Hz. The inversion process, validated by an excellent misfit curve, yields a seven-layer Vs model with RMS values mostly below 0.01. The 2D pseudo-section models based on 1D inversion results show a subsurface stratification consisting of a soft to medium overburden (Vs < 350 m/s) layer of 15 meters thick, followed by a transition zone of dense soil, and engineering bedrock (Vs > 750 m/s) found at a depth of 30 to 40 meters. In general, lateral variations were identified as undulating bedrock topography and local basin structures. Based on SNI 1726:2019, the site is classified as Medium Soil (SD) to Very Dense Soil (SC), with an estimated Vs value influenced by the thickness of the surface sediment. These results provide a valuable overview of subsurface conditions from site characterization and can serve as a basis for geotechnical planning in the study area.
Screening-Level Liquefaction Susceptibility Assessment in Central West Lombok: Integrating HVSR-Derived Ground Shear Strain and Groundwater Depth Ilham, Ilham; Nevi Ernita; Ichwan Arief Ramdhani; Lalu Aldi Pranata
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Lombok is one of the earthquake-prone areas in Indonesia that is highly exposed to secondary hazards such as liquefaction. This research presents a screening-level liquefaction susceptibility assessment for the central part of West Lombok by integrating two main controlling parameters, namely ground shear strain (GSS) derived from HVSR microtremor measurements (n = 52) as an indicator of surface soil deformability, and groundwater depth (GWD) from field observations as an indicator of soil saturation level. The Liquefaction Susceptibility Index (LSI) was calculated by combining these two parameters using an unweighted conjunctive geometric mean approach to emphasize the simultaneous occurrence of soil deformability and groundwater saturation conditions while reducing compensatory effects that may occur in additive integration methods. The idea behind this approach is that locations where both high soil deformability and shallow groundwater levels are present will be assigned higher susceptibility values, while the susceptibility values will be reduced for locations where these two prerequisites are mismatched. The integrated LSI offers a more selective zonation than the single parameter outputs: the GWD-only map identifies widespread hydrologically favorable conditions (77.24% are classified as High–Very High) as saturation-ready, and the GSS-only map is dominated by Moderate–Low deformability (73.51%). The integrated map classifies 34.79% of the study area as High, 55.40% as Moderate and 9.80% as Low, with no Very High class. High susceptibility is concentrated in the western coastal belt (Labuapi–Gerung–Lembar), which corresponds to low-lying coastal/alluvial plains underlain by Quaternary alluvium where shallow groundwater and mechanically susceptible ground are more likely to coincide. However, the proposed susceptibility model has not been validated using CPT/SPT measurements, borehole observations, or documented liquefaction inventories. Therefore, the resulting map should be interpreted as a proxy-based screening-level prioritization tool for guiding future geotechnical investigations rather than a deterministic assessment of liquefaction occurrence.
2D and 3D Models of Rainfall-Induced Landslide-Prone Areas Using Electrical Resistivity Imaging (ERI) in Liku Sembilan, Central Bengkulu, Indonesia Sari, Sefti Dewi; Suhendra; Refrizon; Novita, Gina Soffia; Halauddin; Raihana, Hana; Ramadhani, Yola Dwi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Liku Sembilan, Central Bengkulu, is a landslide-prone area characterised by steep topography, intense weathering, and high annual rainfall. This study aims to identify the geometry and depth of the slip surface using integrated 2D and 3D Electrical Resistivity Imaging (ERI) to improve the characterisation of subsurface conditions associated with landslide occurrence. Data acquisition was conducted using the Wenner–Schlumberger array with 48 electrodes. The 2D survey was performed along a 94 m profile with 2 m electrode spacing, while the 3D survey covered approximately 1,750 m² using six parallel lines with 5 m line spacing and 10 m electrode spacing. Data were processed using Res2DInv and ERTLab-ViewLab3D. The inversion model produced an RMS error of 34.3% at the second iteration, which is considered acceptable given the complex topographic and geological conditions of the study area. The results reveal a low-resistivity zone (18–53 Ω·m) at a depth of approximately 5–10 m, interpreted as a water-saturated clay layer that serves as the main slip surface. The identified slip surface exhibits a curved geometry with a slope of 25–35°, indicating a rotational landslide mechanism. The integrated 2D and 3D ERI models provide a more comprehensive visualisation of the spatial continuity and geometry of the slip surface than a single-model approach. In addition, very low-resistivity zones (1–10 Ω · m) indicate areas of groundwater accumulation that may contribute to slope instability. These findings demonstrate the effectiveness of combined 2D and 3D ERI for landslide characterisation in tropical volcanic terrains and provide important information for slope-hazard mitigation and subsurface drainage planning.
A Review of Critical Land in Areas Dominated by Volcanic Deposits to Support Local Ecosystem Rehabilitation Planning Setia Ritma Pamungkas, Helmi; Purwanti , Heny; Ali, Noorwirdawati; Mardlotillah Yogaswara, Laila; Trilusianthy Hidayat , Janthy; Vahiraeni, Refina
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
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Abstract

Volcanic-derived Lithosol soils dominate North Bogor District and are inherently susceptible to erosion due to their shallow profiles and limited capacity to retain water. Combined with increasing urban land-use pressures, these conditions contribute to land degradation and the development of potentially critical land. This study aims to assess the spatial distribution of potentially critical land and formulate ecosystem-based rehabilitation strategies for sustainable land management in North Bogor District. The assessment followed a GIS-based critical land evaluation framework adapted from the national guideline for critical land assessment. GIS overlay analysis was applied to integrate land cover, soil characteristics, and land management parameters, while erosion susceptibility was evaluated using the Universal Soil Loss Equation (USLE) approach. The results indicate that potentially critical land is primarily associated with volcanic-derived Lithosol soils and areas experiencing moderate to very slight erosion hazards. These areas represent priority zones for rehabilitation because their geological characteristics increase vulnerability to ongoing land degradation. Ecosystem-based rehabilitation strategies, including the establishment of locally adapted vegetation species and the implementation of contour terracing, are recommended to reduce erosion risks, improve environmental resilience, and restore land functions. This study provides an integrated framework that links geological vulnerability, erosion susceptibility, and ecosystem-based rehabilitation for prioritizing land restoration efforts, thereby supporting sustainable land management and urban environmental planning in volcanic landscapes.

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