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All Journal Jurnal Fisika Unand Journal of Geoscience, Engineering, Environment, and Technology Buletin Sumber Daya Geologi Jurnal Pengabdian Masyarakat Asia Indonesian Journal of Community Empowerment and Service
Refrizon
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Arts Humanities Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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Visualisasi Sebaran Air Tanah Berdasarkan Nilai Resistivitas Dengan Konfigurasi Wenner – Schlumberger Di Desa Air Rami Kabupaten Mukomuko Sakti, Ridho Eka; Sendiya Verentina; Suhendra; Refrizon; Gayatriani, Intan
Jurnal Fisika Unand Vol 14 No 4 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.4.353-359.2025

Abstract

Research has been conducted on groundwater potential in Air Rami Village, Mukomuko Regency, Bengkulu Province. The research was conducted because Air Rami Village lacks the availability of water from groundwater and often experiences failures in making boreholes, so this research aims to identify and determine the distribution of groundwater in the aquifer layer. In this study using 2D resistivity geoelectric method with wenner-schlumberger configuration that can identify the distribution of groundwater based on resistivity value. Groundwater distribution based on rock resistivity value so that it can be interpreted as an area potentially containing groundwater originating from aquifers. The 2D geoelectric data acquisition used the geoelectric MAE X612 – EM VHR Multi-Channel resistivitymeter with 48 electrodes. Data processing to determine the distribution of groundwater and subsurface rock conditions using Res2Dinv software version 3.71 which produces 2D resistivity cross sections of the earth's subsurface with resistivity values between 3.40 - 21.90 Ω.m. The resistivity value is interpreted as groundwater. Aquifers that store a lot of groundwater are located at positions 240 - 280 m from the starting point of measurement which has a depth of between 20 - 65 m.
DELINEASI PROSPEK PANAS BUMI DI KAWASAN WISATA AIR PUTIH KABUPATEN LEBONG BENGKULU MENGGUNAKAN METODE MAGNETOTELURIK : GEOTHERMAL PROSPECT DELINEATION STUDY IN AIR PUTIH TOURISM AREA LEBONG DISTRICT BENGKULU USING MAGNETOTELLURIC METHOD Della Zakia Soleha; Farid, Muchammad; Refrizon; Maesaroh, Rina; Hardianza, Meno; Hasugian, Basdiki; Gea, Jessica Agnes Soroinama; Al Ansory, Andre Rahmat
Buletin Sumber Daya Geologi Vol 20 No 1 (2025): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v20i1.488

Abstract

Geothermal energy is renewable and can be used as an energy reserve in the future. This research aims to determine locations that have geothermal potential in the Air Putih Tourism area, Lebong Regency, Bengkulu Province based on resistivity values using the magnetoteluric method. The resistivity values obtained vary from low, medium, and high which can be used as a reference to describe subsurface conditions. In this data acquisition, measurements were made using the ADU-07e Magnetotelurik tool which has a measurement time of 16 hours with a low frequency bandwidth of 128 Hz, a medium frequency bandwidth of 1024 Hz, and a high frequency bandwidth of 4096 Hz. The sensor in the recording has two sensors: a magnetic sensor and an electrical sensor. The magnetic sensor consists of 3 sensors/coils (Hx, Hy, and Hz), while the electrical sensor uses 4 orthogonally placed pot shafts (Ex and Ey). Based on the results of data processing using the Magnetoteluric method with ZondMT software, there is a range of resistivity values of 10-700 (Ωm) which provides information on the structure of the subsurface layer. Layers with low resistivity (18-30 Ωm), medium resistivity (40-160 Ωm) and the highest resistivity (>300 Ωm).
Administrative and Topographic Map of Kelurahan to Support Land Efficiency and Flood Mitigation Refrizon; Farid, Mochammad; Ekawita, Riska; Fauzi, Hera Wahyu; Anggria, Della Cici; Prasetyo, Rendi Dwi
Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2024): Jurnal Pengabdian Masyarakat
Publisher : Institut Teknologi dan Bisnis Asia Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32815/jpm.v5i2.1779

Abstract

Purpose: The community service activity by the University of Bengkulu Geophysics and Physics Team aimed to assist the community of Kandang Limun, Bengkulu City, by developing maps that display area boundaries and topographical elevations. The maps were intended to serve as easily accessible sources of information for the local community and to aid in planning and development efforts.Method: The methodology involved conducting a preliminary survey, collecting data, preparing software tools, and creating both boundary and topographic maps. A questionnaire was distributed to assess community satisfaction with the project.Practical Applications: The maps provide valuable information for local government and residents, serving as a resource for defining area boundaries and understanding topographical features. These maps are particularly useful for urban planning, land use, and community development initiatives.Conclusion: The creation and public display of administrative and topographical maps in the Kelurahan office have improved access to essential geographical information. This initiative supports better community planning and contributes to the informed development of the area, benefiting both the local government and residents.
Analysis of Potential New Flood Basin in Ratu Agung Sub-district Using the HVSR Method Apriana, Yelda; Refrizon; Farid, Muchammad; Onawa, Jonah; Hardianza, Meno; Setyowati, Yuni; Verentina, Sendiya
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 3 (2025): JGEET Vol 10 No 03 : September (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.3.22541

Abstract

Indonesia is a tropical country with high rainfall and diverse topography, making it prone to flooding. In Bengkulu City, the flood risk is particularly high in low-lying and flood basins, which are critical zones for flood risk mitigation. This study aims to analyze the characteristics of rock types and water infiltration potential that may  trigger new flood basins in Ratu Agung District, Bengkulu City. The microtremor method was applied to assess soil  properties based on the dominant frequency (f0), amplification factor (A0), and sediment layer thickness. The analysis showed (f0) values ranging from 1.13 to 8.55 Hz and (A0) values ranging from 0.74 to 4.59. HV-Inv analysis results indicate shear wave velocity Vs values between 53 and 894 m/s, with five sediment layers reaching a depth of 100 m. Higher Vs values generally represent denser, less porous rock, limiting infiltration and increasing surface runoff, which elevates flood potential. The findings of this study are expected to serve as a reference for flood risk mitigation, especially in minimizing infrastructure damage and social impacts in Bengkulu City.
Training on the Utilization of the HVSR Geophysical Method Based on the Concept of Mechanical Wave Propagation for Earthquake Hazard Potential Analysis in Kuto Rejo Village Hadi, Arif Ismul; Refrizon; Muda Lubis, Ashar; Johan, Septi; Halauddin
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 5 No. 2 (2025): December 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/icomes.v5i2.45281

Abstract

Kepahiang Regency has a high potential for earthquake hazards. This is because the Kepahiang area is located in the subduction zone of the Indo-Australian tectonic plate movement in the ocean and the movement of the Musi segment of the Sumatra fault on land as the main fault. As an area with high earthquake hazard potential and its location near the Musi segment fault, efforts are needed to reduce the risk of disasters due to earthquakes through the activity "Training on the Utilization of the Horizontal to Vertical Spectral Ratio (HVSR) Geophysical Method”. The HVSR method is a geophysical method based on the concept of mechanical wave propagation. HVSR measurements can be used to understand the structural properties of subsurface. The target audience for this activity is Village Apparatus and Residents of Kuto Rejo Village, Kepahiang Regency. This activity aims to provide an understanding of the basic concepts of mechanical wave propagation in rocks and provide training in the use of the HVSR method. The method used is through the stages of focus group discussion (FGD), field data acquisition, processing, interpretation and evaluation. The indicator of the achievement of the objectives of this activity is if each activity participant can acquisition, process, analyze, and interpret and answer the questionnaire related to the community service material correctly. The results of this activity provide insight into the importance of local wisdom-based earthquake hazard mitigation for disaster risk reduction. Village Apparatus and Residents of Kuto Rejo Village will continuously share their knowledge with other villagers from this activity.
Use of the Diffuse Field Assumption (DFA) Method to Determine The Condition of The Subsurface Layer in The Government Office Area of Bengkulu City, Indonesia Efmadani; Farid, Muchammad; Refrizon; Raihana, Hana; Anggi, Arya Putra; Hasugian, Basdikki; Al-Ansory, Andre Rahmat
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2026.11.02.27025

Abstract

Bengkulu City lies in an earthquake-prone region because of tectonic activity along the Sumatra subduction zone. Subsurface characterization is critical for safe infrastructure planning. This study identifies subsurface conditions in the Bengkulu City Government office area using microtremor data analyzed with the Diffuse Field Assumption (DFA) approach. Researchers recorded 52 measurement points to determine key seismic parameters: dominant frequency (f0), amplification factor (A0), seismic vulnerability index (Kg), and shear wave velocity (Vs30). The results show that f0 values range from 3.57 to 14.8 Hz, A0 from 1.62 to 7.18, Kg from 0.30 to 6.35, and Vs30 from 189.29 to 740.48 m/s, indicating significant spatial variation in subsurface conditions. Areas characterized by low f0, high A0, and low Vs30, particularly at points T33 and T41, are identified as zones with higher seismic vulnerability. The application of the DFA approach enables a more reliable estimation of subsurface shear wave velocity and enhances the interpretation of site effects compared to conventional analysis. These findings highlight the importance of integrated seismic parameter mapping to support earthquake hazard mitigation and urban spatial planning in tectonically active regions.
Co-Authors Al Ansory, Andre Rahmat Al-Ansory, Andre Rahmat Anggi, Arya Putra Anggria, Della Cici Apriana, Yelda Arif Ismul Hadi Della Zakia Soleha Efmadani Farid, Mochammad Farid, Muchammad Fauzi, Hera Wahyu Gayatriani, Intan Gea, Jessica Agnes Soroinama Halauddin Hardianza, Meno Hasugian, Basdiki Hasugian, Basdikki Johan, Septi Maesaroh, Rina Muda Lubis, Ashar Onawa, Jonah Raihana, Hana Rendi Dwi Prasetyo Riska Ekawita Sakti, Ridho Eka Sendiya Verentina Suhendra Verentina, Sendiya Yuni Setyowati