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All Journal International Journal of Advances in Applied Sciences BERKALA FISIKA GRADIEN Jurnal Fisika Unand Jurnal Geocelebes INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Pendidikan Fisika dan Teknologi Indonesian Physical Review Inersia : Jurnal Teknik Sipil Jurnal Geosaintek Jurnal Fisika
Halauddin Halauddin
Jurusan Fisika, Fakultas MIPA - Universitas Bengkulu
Astronomy Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Identification Lithology of Geothermal Potential Areas Using the Electrical Resistivity Tomography (ERT) Method Raihana, Hana; Suhendra, Suhendra; Nazli, Khairun; Halauddin, Halauddin; Refrizon, Refrizon
JURNAL GEOCELEBES Vol. 8 No. 2: October 2024
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v8i2.25377

Abstract

The rock lithology of the potential hydrothermal area has been studied using Electrical Resistivity Tomography (ERT) in Pungguk Pedaro Village, Bingin Kuning District, Lebong Regency. Field data acquisition uses a stretch length of 480 meter with the MAE X612-EM Geoelectric tool that forms a straight line. ERT method, using Res2dinvx64 software. The study aims to determine the subsurface conditions of the potential hydrothermal area and the characteristics of the rocks that make up the hydrothermal area. The results of this study can be concluded that Pungguk Pedaro Village is dominated by clay, sandstone, sandy gravel, andesite, basalt, and granite rocks. In this study, measurements were taken with six lines to see variations in resistivity values as a reference for identifying potential geothermal lithologies. There is 1 line that cuts to five lines to validate the resistivity value of each line. Line 1 has no potential for hydrothermal distribution because there has been a mixture of hydrothermal water with mountain water, so this line will only provide groundwater.
Stratigraphic Determination Based on Shear Wave Velocity for Earthquake Disaster Mitigation in Lebong District Jaya, Shara Ashari Prana Jaya; Refrizon, Refrizon; Halauddin, Halauddin; Al Ansory, Andre Rahmat; Abimayu, Dadin Mars; Sholeha, Della Zakia; Apriana, Yelda
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 10 No 2 (2024): July - December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v10i2.7478

Abstract

Bengkulu Province, including North Bengkulu and Lebong, is located in the subduction zone of the Indo-Australian and Eurasian plates, which makes the region prone to earthquakes. This research focuses on earthquake disaster mitigation in the Lemeu area, Uram Jaya District, and Lebong Regency. It identifies areas prone to earthquake shaking based on Vs stratigraphy, Vs30 distribution, and soil site class. The Vs value was measured directly using the Multichannel Analysis of Surface Wave (MASW) method for three passes. Each track has four stations, so there are 12 data collection stations. The station point is the center point of a series of 24 geophones. Each geophone has a recording time of 512 ms and a sampling rate time of 125 ms to obtain 4096 data for each geophone. The measurement data was processed using WINMASW 5.0 professional software to produce a 1D profile. From the stratigraphic Vs, Vs30 is calculated and used to determine the site class, and then a distribution map is made. The results show that this area consists of site classes D, C and B. Medium soil with a value range of 175 ≤ Vs30 ≤ 350, hard soil with a value range of 350 ≤ Vs30 ≤ 750 and soft rock with a value range of 750 ≤ Vs30 ≤ 1500. Of the 12 measurement points, 2 locations have relatively shallow Vs30 values, namely at points 4 and 11. This location has Vs30 values ranging from 221 - 258 m/s, so around this point, there is likely a high potential for building damage in the event of an earthquake.
Identification of Groundwater Presence Using ERT (Electrical Resistivity Tomography) in Berkas Village, Teluk Segara Sub-district, Bengkulu City Fauzi, M. Wilzam; Suhendra, Suhendra; Refrizon, Refrizon; Halauddin, Halauddin; Rabbani, M Rifqi; Al Rafly, Tegar; Al Ansory, Andre Rahmat; Raihana, Hana; Rahmawati, Nurul 'Ilmi; Tri Utami, Olga
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 10 No 2 (2024): July - December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v10i2.7717

Abstract

Kelurahan Berkas is a coastal area in Teluk Segara Sub-district, Bengkulu Regency, Bengkulu Province. The purpose of this research is to identify the presence of groundwater in Kelurahan Berkas. The method used was resistivity geoelectric method with Wenner-Schlumberger configuration. This research applied three lines, the first in the Southwest-Northeast direction and the second in the East-West direction, with a length of 240 metres each. The results show that the free aquifer layer in the first pass has a resistivity value of 1.61 Ω.m to 3.98 Ω.m at a depth of 7 metres to 24 metres. While the second pass has a resistivity value of 3.17 Ω.m to 9.23 Ω.m at a depth of 8 metres to 36.9 metres and the third pass has a resistivity value of 1.62 Ω.m to 7.05 Ω.m at a depth of 2 metres to 20 metres. The results also show that the lithology of the aquifer layer in the study area is interpreted as clay, sandy clay, and sand. This layer contains groundwater that has been affected by seawater intrusion. The influence of this intrusion causes the groundwater to have a relatively low percentage of salinity so that the groundwater at the research location feels brackish. The existence of seawater intrusion is caused by the kelurahan berkas right on the coast so that the kelurahan berkas community lacks clean water, so the well water becomes brackish, therefore with this research the community can find out the location or point where there is groundwater.
Identification of Hydrothermal Reservoirs Using the Dipole-Dipole Configuration Geoelectric Method in Air Putih Village, Lebong Regency, Bengkulu wahyu, Wahyu cahyadi setiawan; Suhendra, Suhendra; Halauddin, Halauddin; Muhammad Wilzam Fauzi, Muhammad Wilzam Fauzi; Bayu Saputra, Bayu Saputra; Sri Rahayu, Sri Rahayu; Rival Zamrawi, Rival Zamrawi; Bimantara Panca Utama, Bimantara Panca Utama
Jurnal Fisika Vol. 14 No. 1 (2024): Jurnal Fisika 14 (1) 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study was conducted in Lebong Regency, Bengkulu Province, where the Ketahun segmented fault crosses. Using geoelectric data, this study was conducted to identify the distribution of hydrothermal reservoirs, the dipole-dipole method was used because it obtained more data so as to see the potential distribution of hot water and subsurface constituent rocks in more detail, obtained the results of analysis from processing using RES2DINV that the resistivity value is 6.66 -23.5 Ωm which is thought to be a geothermal source, the rock formation that is considered to be related to the hot springs of Air Putih Village is located at (72.4 - 120) metres with a depth of (0.5 -18) metres. The rock layer has a resistivity value of (6.6 - 23.5 Ωm), which is characteristic of hot water because it has low resistance and is perpendicular to the hot spring. The existence of this weak zone indicates that the porosity will increase, causing hot water from the subsurface to appear as a geothermal manifestation, the hydrothermal distribution in the research area is uneven due to the unequal rock constituents, according to the geological map in the research area the area is a sihapas formation, where the sihapas formation consists of sedimentary rocks, sand, clastic, and siltstone. This research is recommended to develop the tourism potential of hot springs in Air Putih Village, Lebong.
Coastal vulnerability assessment using electrical resistivity tomography in Padang Betuah, Central Bengkulu Suhendra, Suhendra; Halauddin, Halauddin; Lizalidiawati, Lizalidiawati; Sinaga, Jesika Erni Elfrita; Fadli, Darmawan Ikhlas; Idris, Beni Syakban
International Journal of Advances in Applied Sciences Vol 12, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v12.i4.pp301-308

Abstract

Abrasion disaster in the coastal area of Padang Betuah Beach has a high level of abrasion in Central Bengkulu. The local community utilizes abrasion in the coastal area as a tourist attraction and becomes local revenue in the research location. The location that becomes a tourist attraction is decreasing because the coastal area’s land has been abraded. After conducting research using the electrical resistivity tomography (ERT) method in 2D and 3D, it was found that claystone dominated the coastal area at the research location with a resistivity value of 16-200 Ωm at a depth of 15-20 m. The coastal area in Padang Betuah Beach is composed of clay shale rocks (207-220 Ωm), and the depth is 2-14.8 m. Clay shale rocks are not abraded in stones with resistivity values >250 Ωm. This is caused by clay shale, which has low porosity, so it has a compact rock density. Seawater is identified at a depth of 21-63 m with a resistivity value of 2.225-10.2 Ωm. The depth of seawater determined follows the average height of the cliffs in the research location. The abrasion process can be slowed down by making jetties, water breakers, and mangrove cultivation.
Identification of Abrasion-Prone Areas Based on Vertical Electrical Sounding at Geotourism Beach Pasar Bawah South Bengkulu Kamila, Nur Husniatin; Suhendra, Suhendra; Halauddin, Halauddin; Ulandari, Clora; Hasugian, Basdiki; Al Akbar, M Riski; Raihana, Hana; Al Ansory, Andre Rahmat
Jurnal Fisika Unand Vol 14 No 6 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.6.569-576.2025

Abstract

This research was conducted to investigate abrasion-prone areas using the Vertical Electrical Sounding (VES) method at Pasar Bawah Manna Beach, South Bengkulu Regency. Data collection using a track length of 200 with the MAE X612-EM geoelectric tool that runs along the abrasion-prone area. Data processing using IP2WIN software and satellite images. This study aims to determine the subsurface of abrasion-prone areas and rock characteristics of abrasion. The results of this study indicate that the research location has seawater ntrusion that seeps into the aquifer with a resistivity value of (0.763 - 8.01 Ωm) and the rock formation of the research area is dominated by alluvium rocks including gravel (130 - 356. 2 Ωm), clay (14.65 Ωm), silt (16.5 -61.41 Ωm), sand (258 - 313 Ωm), sandstone (97.6 Ωm), passive gravel (1496 Ωm), and limestone (2560 Ωm). Based on satellite image data, abrasion-prone is identified from several points in the study area that have significant shoreline changes at sounding point 1 where the point from 2008 to 2023 shows that abrasion has occurred quite significantly over the past 15 years, where at Sounding point 1 abrasion occurs along ± 23 meters / year. The findings of this research are expected to provide knowledge about disaster mitigation in sustainable tourism governance.
3D MODELING AND DERIVATIVE ANALYSIS OF THE KETAHUN SEGMENT BASED ON GGMPLUS AND SRTM2 DATA FOR DISASTER MITIGATION Ulandari, Clora; Halauddin, Halauddin; Refrizon, Refrizon; Zakariya, Hilmi; Suhendra, Suhendra; Farid, Muchammad; Sulistiani, Alda; Raihana, Hana; Apriyanti, Nurul
Jurnal Geosaintek Vol. 12 No. 2 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v12i2.9106

Abstract

interaction between the Sumatra subduction zone and the Sumatra Fault, resulting in high seismic activity. One of the important segments with the potential to cause earthquakes is the Ketahun Segment in Lebong Regency, Bengkulu Province. This study aims to map the three-dimensional (3D) fault structure and identify lithological density contrasts to support disaster mitigation efforts. The methods used include processing GGMPlus and SRTM2gravity satellite gravity data, complete Bouguer correction, regional-residual anomaly separation, first horizontal derivative (FHD) and second vertical derivative (SVD) analysis, and 3D inversion modeling using Grav3D software. The CBA analysis results show anomaly values of –8 to 50 mGal with sharp gradations indicating the presence of major fault structures. SVD and FHD analyses show the dominance of dip-slip faults with significant density contrasts. The 3D inversion modeling shows a density range of 1.02–3.52 g/cm³ with an average value of 2.27 g/cm³, where the low-density zone is at a shallow depth (0–1500 m) and the high-density zone is at a depth of 500–2000 m. The sharp boundary between the two zones indicates an active fault plane at a depth of 1000–2500 m. These findings provide a more representative picture of the fault geometry and can be used as a basis for developing earthquake mitigation strategies and spatial planning based on actual geological conditions in the Bengkulu region.
Interpretasi Tingkat Kekerasan Batuan Bawah Permukaan di Daerah Rawan Gempa Bumi Kota Bengkulu Hadi, Arif Ismul; Refrizon, Refrizon; Halauddin, Halauddin; Lidiawati, Liza; Edo, Paisal
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.46525

Abstract

Bengkulu City is located in the subduction zone of the Indo-Australian and Eurasian plates, so it is prone to earthquake. To anticipate the impact of earthquake, disaster mitigation can be carried out, one of which is a study of the level of rock hardness in the area. This study aims to determine the level of rock hardness based on seismic wave velocity in several rock formations and to determine which rock formations have the potential to cause vulnerability to earthquakes. Field data acquisition uses the seismic refraction method with time-term inversion technique. The data obtained in the field are processed to obtain a 2-D cross-section of the subsurface seismic wave velocity values. The study results show that the level of rock hardness depends on the type of rock formation. The Andesite Rock Formation Unit (Tpan) has the highest level of hardness, while the transitional area between the Alluvium Rock Formation Unit (Qa) and the Swamp Sedimentary Rock Formation Unit (Qs) has the lowest level of hardness.
Co-Authors Abimayu, Dadin Mars Al Akbar, M Riski Al Ansory, Andre Rahmat Al Rafly, Tegar Apriana, Yelda Apriyanti, Nurul Arif Ismul Hadi Barasa, Habel Bayu Saputra, Bayu Saputra Bimantara Panca Utama, Bimantara Panca Utama Edo, Paisal Fachri Faisal Fadli, Darmawan Ikhlas Farid, Muchammad Fauzi, M. Wilzam Gayatriani, Intan Gustan, Nesti Fazeza Hasugian, Basdiki Idris, Beni Syakban Jaya, Shara Ashari Prana Jaya Kamila, Nur Husniatin Kausari, Alfata Lizalidiawati Lizalidiawati Muammar, Zaky Muhammad Wilzam Fauzi, Muhammad Wilzam Fauzi Nazli, Khairun Rabbani, M Rifqi Rafly, Tegar Al Rahmat, Andre Rahmawati, Nurul 'Ilmi Raihana, Hana Refrizon Refrizon Rival Zamrawi, Rival Zamrawi Sahputra, Rio Sholeha, Della Zakia Sinaga, Jesika Erni ELfrita Sri Rahayu, Sri Rahayu Suhendra Suhendra Sulistiani, Alda Tri Utami, Olga Ulandari, Clora Verentina, Sendiya wahyu, Wahyu cahyadi setiawan Zakariya, Hilmi