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All Journal Jurnal Fisika Unand Buletin Sumber Daya Geologi
Hardianza, Meno
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Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

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Identifikasi Batuan Reservoir Panas Bumi di Daerah Tambang Sawah, Lebong Provinsi Bengkulu Menggunakan Data Gravitasi Satelit GGMPlus dengan Inversi 2D Hardianza, Meno; Hadi, Arif Ismul; Hilmi Zakarya
Jurnal Fisika Unand Vol 14 No 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.2.177-183.2025

Abstract

The Tambang Sawah geothermal field located in Lebong Regency, Bengkulu Province, is one of the geothermal energy potentials in Indonesia. The area is associated with tectonic activity in the bukit barisan mountain range which is indicated by the appearance of hot springs and fumaroles. This research uses Global Gravity Model (GGM) gravity data, in the form of Free Air Anomaly (FAA) data with a resolution of 220 metres and shuttle radar topography mission (SRTM2Gravity) as contemporary terrain correction data in the form of full scale gravity data. The FAA data was then subtracted from the full scale gravity data to obtain the complete Bouger anomaly (CBA). The CBA was subjected to spectrum analysis to determine the depth estimate and then separated to obtain regional and residual anomalies using the moving average method. There are three distribution patterns of anomaly distribution, namely low, medium and high. The results showed that on the CBA map, areas with moderate anomalies were thought to have geothermal reservoirs with densities < 2.53 g/cm3 different depths.
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).
Co-Authors Al Ansory, Andre Rahmat Arif Ismul Hadi Della Zakia Soleha Farid, Muchammad Gea, Jessica Agnes Soroinama Hasugian, Basdiki Hilmi Zakarya Maesaroh, Rina Refrizon