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All Journal IJOG : Indonesian Journal on Geoscience SEMIRATA 2015 Jurnal Fisika FLUX Jurnal Geocelebes MAJALAH ILMIAH GLOBE Jurnal Penelitian Pendidikan IPA (JPPIPA) Buletin Sumber Daya Geologi BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Ilmu Fisika Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Al-Ikhlas Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Indonesian Journal on Geoscience Navigation Physics : Journal of Physics Education Indonesian Journal on Geoscience Formosa Journal of Computer and Information Science Newton-Maxwell Journal of Physics Indonesian Journal of Community Empowerment and Service J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Geosains Kutai Basin Abdi Reksa Jurnal Geosaintek
Harlianto, Budi
Bengkulu University
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Investigasi Deformasi Permukaan Tanah Pasca Gempabumi Myanmar 7.7 Mw 2025 Menggunakan Metode Differential Interferometry Syntetic Aperture Radar Azhari, M. Fikri; Harlianto, Budi; Norfahmi, Siti Hairunnisa
GEOSAINS KUTAI BASIN Vol. 8 No. 2 (2025)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/52yjec35

Abstract

Penelitian ini bertujuan untuk menginvestigasi deformasi permukaan tanah yang terjadi pasca gempa bumi Myanmar berkekuatan 7.7 Mw pada 28 Maret 2025. Sepasang data citra Sentinel 1A dan 1B digunakan dalam mengamati perubahan tanah sebelum dan setelah terjadinya gempa utama. Metode yang digunakan dalam penelitian ini yaitu Differential Interferometric Synthetic Aperture Radar (DInSAR), yang mampu mendeteksi perubahan kecil pada permukaan bumi dengan resolusi spasial tinggi. Data citra satelit Sentinel-1 diolah untuk menghasilkan interferogram yang menunjukkan pola deformasi. Hasil analisis menunjukkan adanya pergeseran permukaan tanah signifikan di sepanjang zona sesar aktif Sagaing dengan arah dominan pergeseran horizontal dan vertikal yang bervariasi. Deformasi maksimum terdeteksi di sekitar lokasi gempa utama mencapai -25 cm relatif mengalami penurunan muka tanah (subsidence) terhadap line of sight. Disisi lain terjadi kenaikan muka tanah (uplift) maksimum sebesar +2.3 cm terhadap line of sight di bagian barat daya Sesar Sagaing dan pusat gempa 7.7 Mw. Distribusi nilai deformasi menunjukkan orientasi yang sesuai dengan model mekanisme sumber gempa sesar geser menganan. Hasil uji model juga menunjukan kesesuaian citra yang akurat dengan nilai koherensi sebesar 0.6 hingga 0.9.
HVSR Microtremor Analysis to Assess Subsurface Fault Characteristics and Geothermal Potential in Kepahiang Rabbani, Muhammad Rifqi; Hadi, Arif Ismul; Harlianto, Budi; Farid, Muchammad; Raihana, Hana; Anggi, Arya Putra
JURNAL GEOCELEBES Vol. 9 No. 2: October 2025
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70561/geocelebes.v9i2.43347

Abstract

Kepahiang, Bengkulu, is an area with considerable geothermal potential, especially in the Air Sempiang and Babakan Bogor areas. This study aims to analyze subsurface fault characteristics and assess geothermal potential using the Horizontal-to-Vertical Spectral Ratio (HVSR) microtremor method. This passive seismic method is used to determine key geophysical parameters, including dominant frequency (f0), amplification factor (A0), shear wave velocity (vs), and primary wave velocity (vp), which are essential for characterizing subsurface geological structures and identifying geothermal reservoir zones. The results show that dominant frequency values in Kepahiang range from 1.24 Hz to 20.45 Hz, while the amplification factor varies between 1.29 and 7.22. vs values range from 121.61 m/s to 3251.79 m/s, and vp values range from 214.91 m/s to 6469.79 m/s. These findings suggest that the surface layer consists mainly of alluvium and hard sandy gravel, with thicknesses varying between 10 and 50 meters. The 3D subsurface model constructed from the data indicates the presence of fault-controlled geothermal manifestations, mainly influenced by the Babakan Bogor Fault and Bogor Fault. These faults facilitate the upward migration of geothermal fluids, forming surface manifestations such as hot springs, fumaroles, and altered rocks. The geothermal system in the study area is classified as a low-temperature geothermal system, mainly caused by residual magmatic heat from Kaba Mountain and Bukit Hitam Crater. This research provides important insights for geothermal energy exploration and geotourism development in Kepahiang. These findings serve as a scientific basis for future geothermal resource assessment, land use planning, and sustainable energy utilization.
Analysis of Earthquake Risk Estimation for Sustainable Development Using Microtremor Data Based on Vs30 Distribution: Comparative Study of DFA and Geopsy in Central Bengkulu, Indonesia Arya Putra Anggi; Refrizon, Refrizon; Harlianto, Budi; Apriyanti, Nurul; Saputri, Winda; Febriansyah, Gian Ori; Al-Ansory, Andre Rahmat; Raihana, Hana; Daniel, Adrian; Gumanty, Usman
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.214-228.2025

Abstract

This research was conducted in Pondok Kelapa Subdistrict, Central Bengkulu Regency, to analyze subsurface characteristics using microtremor data and the Horizontal-to-Vertical Spectral Ratio (HVSR) method. The research compared DFA (Diffuse Field Assumption) and Geopsy approach. In this study, 40 points were measured with a distance between points ranging from 200 to 300 meters. The data were processed using Terraware-HV and Geopsy software with a Monte Carlo approach to model the 3D subsurface structure. Results show that the dominant frequencies range from 0.64 to 8.19 Hz, with high amplification zones between 1.92 and 7.72 concentrated in areas of loose soil, indicating their high seismic susceptibility. Vs30 values range from 55 to 465 m/s, reflecting the dominance of soft to medium materials, such as clay, gravel, sand, and soft rock at specific depths. 3D modeling revealed a heterogeneous distribution of subsurface materials, with high amplification zones requiring special mitigation. This study provides important insights for seismic risk zoning, disaster mitigation, and earthquake-resistant structure design, and supports sustainable development planning in earthquake-prone areas. The results are expected to serve as a reference in spatial management based on earthquake risk mitigation.
DELINEASI NILAI RESISTIVITAS DI LAPANGAN PANAS BUMI TAMBANG SAWAH MENGGUNAKAN METODE MAGNETOTELLURIK Al Ansory, Andre Rahmat; Hana Raihana; Pritama, Vinki Loverly; Saputri, Welly; Maghribi, Faritz Bagda; Muchammad Farid; Arif Ismul Hadi; Halauddin; Harlianto, Budi; Sugianto, Nanang
Buletin Sumber Daya Geologi Vol 18 No 3 (2023): 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.v18i3.386

Abstract

The subsurface structure of the geothermal field in Desa Tambang Sawah has been mapped. This research aims to delineate the resistivity values in the area of Tambang Sawah Village, Lebong Regency, Bengkulu Province based on magnetotelluric measurements which can later identify low, medium, and high resistivity values to interpret geothermal in the research area. The magnetotelluric (MT) method with electrical and magnetic sensors is used to collect data in the field. There are two electrical sensors in horizontal direction (Ex, Ey) and three magnetic sensors in horizontal direction. (Hx, Hy) and vertical (Hz). The results obtained from this study are that resistivity values of 20-50 ohm.m are considered as reservoirs, while resistivity of 0.26-0.8 ohm.m is considered as caprock, and resistivity greater than 300 ohm.m is considered as hot rock.
Pemanfaatan Teknologi Drone dan Artificial Intelligence untuk Edukasi Mitigasi Bencana di SMAN 4 Kepahiang Azhari, M Fikri; Harlianto, Budi; Supiyati; Lizalidiawati; Hairunnisa Norfahmi, Siti; Desrina Saragih, Rika
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.v5i2.45662

Abstract

Bengkulu merupakan salah satu provinsi yang memiliki potensi bencana alam yang tinggi, baik bencana geologi (gempabumi, tsunami, erupsi gunungapi) dan bencana hidrometerologi (longsor, banjir, puting beliung). Perkembangan teknologi pesawat tanpa awak (drone) dan kecerdasan buatan (artificial intelligence) telah membuka peluang baru dalam bidang mitigasi bencana alam. Program pengabdian masyarakat ini bertujuan untuk memanfaatkan teknologi drone dan artificial intelligence (AI) untuk edukasi mengenai pentingnya mitigasi bencana alam di SMAN 4 Kepahiang. Program ini ditujukan untuk siswa-siswi kelas XI jurusan IPA sebanyak 40 orang. Metode yang digunakan dalam kegiatan ini yaitu melakukan sosialisasi, pelatihan dan penerapan teknologi drone dan AI. Selain itu, dilakukan promosi program studi dan evaluasi kegiatan melalui pengisian kuesioner. Hasil yang dicapai dalam kegiatan ini diantaranya yaitu meningkatnya pemahaman pelajar tentang teknologi terapan seperti drone dan AI melalui evaluasi penilaian pre-test dan post-test serta meningkatnya keterampilan dalam mitigasi bencana alam.
Micro-Zonation Mapping of Landslide Potential Using Statistical Weighting Method of Analytical Hierarchy Process (AHP) in South Bengkulu–Lahat Road for Disaster Mitigation Arif Ismul Hadi; Budi Harlianto; Nurul Hudayat; M. Farid; Frinsyah Virgo; Darmawan Ikhlas Fadli; Fadillah Humairah
Jurnal Penelitian Pendidikan IPA Vol 11 No 2 (2025): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i2.9915

Abstract

The research objective was to identify areas with high, medium, and low potential for landslides by micro-zonation on the South Bengkulu–Lahat road, map areas with potential for landslides based on the parameters that contribute to causing landslides using the AHP method, and determine the parameters for landslides, the dominant parameter affecting the occurrence of landslides in the study area. To achieve the research objectives, all parameters that cause landslides obtained at measurement points are then overlaid using the AHP statistical weighting method. The results showed that the area along the South Bengkulu–Lahat road had been identified microzoning high, medium, and low landslide potentials based on statistical weighting from parameters were obtained at the measurement points. For areas with high landslide potential, caution should be exercised, especially during the rainy season with high intensity and long duration.
DYNAMIC RESPONSE OF LOCAL SOIL USING MICROTREMOR ANALYSIS AFTER THE MAY 23, 2025 BENGKULU EARTHQUAKE Shyaira Marcelina; Muchammad Farid; Budi Harlianto; Bayu Saputra; Hana Raihana; Lita Putriani; Andre Rahmat Al Ansory
Jurnal Geosaintek Vol. 12 No. 3 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v12i3.9490

Abstract

The Mw 6.0 earthquake that occurred on May 23, 2025, caused significant damage to the Rafflesia Asri Housing Complex in Bengkulu City. This study aims to examine the dynamic response of the soil and the seismic vulnerability level of the area using the microtremor method and the Horizontal-to-Vertical Spectral Ratio (HVSR) approach. The parameters analyzed include soil dominant frequency (?0), amplification factor (?0), seismic vulnerability index (??), Peak Ground Acceleration (PGA) estimates, and shear wave velocity (??). Measurements were taken at 40 observation points. The analysis results show that ?0 values range from 1.56 to 6.73 Hz, ?0 ranges from 1.97 to 6.46, ?? ranges from 1.15 to 10.38, PGA ranges from 0.15 to 0.32 g, and ?? ranges from 143 to 400 m/s. Zones with low ?0, high ?0 and ??, and PGA followed by low ?? correlated with more significant building damage. These findings confirm that local soil dynamics play a dominant role in controlling seismic amplification and building damage patterns, underscoring the importance of microtremor-based seismic microzonation analysis for earthquake risk mitigation in Bengkulu City
Co-Authors Agus Martono HP Al Ansory, Andre Rahmat Al-Ansory, Andre Rahmat Alda Sulistiani Andre Rahmat Al Ansory Andre Rahmat Al Ansory Andre Rahmat Al Ansory Andre Rahmat Al Ansory Anggi, Arya Putra Apriyanti, Nurul Apriza Hongko Putra Arif Ismul Hadi Arif Ismul Hadi Arif Ismul Hadi Arif Ismul Hadi Arif Setiawan Arrahma, Mawadatul Arya Putra Anggi Ashar Muda Lubis Awaliyah, Isfardian Agustin Azhari, M Fikri Azhari, M. Fikri Baringin, Rolando Bayu Saputra Charles Banon Daniel, Adrian Darmawan Ikhlas Fadli Darmawan Ikhlas Fadli Deni Agustriawan Desi wulandari Desrina Saragih, Rika Dwi Wahyuni Ganefianti Eko Heru Purwanto Elfi Yuliza Entang Inoriah Erma Juniarti Fadillah Humairah Farid, Muchammad Faritz Bagda Maghribi Febriansyah, Gian Ori Frinsyah Virgo Geri Budianto Gumanty, Usman Hairunnisa Norfahmi, Siti Halauddin Halauddin Halauddin Halauddin Halauddin Halauddin Hana Raihana Hana Raihana Hana Raihana Hana Raihana Helfi Eka Saputra Helfi Eka Saputra Ikhlas Fadli, Darmawan Isfardian Agustin Awaliyah Juhendi Sinaga Julia Inti Sari Kamila, Nur Husniatin Lita Putriani Lizalidiawati Lizalidiawati Lizalidiawati M. Farid Maghribi, Faritz Bagda Malik Krisbudianto Mardhatillah Sariyanti Morina Adfa Muchammad Farid Muchammad Farid Muchammad Farid Muhammad Siaman Nanang Sugianto Nanang Sugianto Nanang Sugianto Norfahmi, Siti Hairunnisa Nur Husniatin Kamila Nurul Hudayat Nurul Hudayat Prasetyo Prasetyo Pritama, Vinki Loverly Rabbani, Muhammad Rifqi Raihana, Hana Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon Refrizon, Refrizon Refrizon, Refrizon Rendi Hanapi Rida Samdara Ripal Zamrawi Samsul Bahri Saputri, Welly Saputri, Winda Sari, Julia Inti Sari, Julia Inti Shela Basaria Purba Shyaira Marcelina Suhendra Suhendra Supiyati . Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Teja Dwi Sutanto Triawan, Deni Agus Usman Gumanty Vinki Loverly Pritama Welly Saputri Yohana Christy Sinaga