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All Journal Journal of Marine and Aquatic Sciences International Journal of Renewable Energy Development POSITRON PRISMA FISIKA Jurnal Fisika Unand JOURNAL ONLINE OF PHYSICS Acta Aquatica: Aquatic Sciences Journal Jurnal Laut Khatulistiwa Limits: Journal of Mathematics and Its Applications Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Jurnal Geofisika Bubungan Tinggi: Jurnal Pengabdian Masyarakat Community Development Journal: Jurnal Pengabdian Masyarakat Community Empowerment Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Bulletin of Geology Jurnal Geosaintek JuTISI (Jurnal Teknik Informatika dan Sistem Informasi) Limits: Journal of Mathematics and Its Applications
Yoga Satria Putra
Program Studi Geofisika, Fakultas MIPA, Universitas Tanjungpura, Pontianak
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Journal : Jurnal Geofisika

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Analisis Struktur Geologi Sistem Panas Bumi Menggunakan Metode Gaya Berat di Daerah Danau Maninjau Sumatera Barat putra, yoga satria
Jurnal Geofisika Vol 21 No 1 (2023): Jurnal Geofisika
Publisher : Himpunan Ahli Geofisika Indonesia (HAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36435/jgf.v21i1.551

Abstract

A geothermal system is generally associated with faults in geological structures. Therefore, identifying faults in the geothermal system is a critical study. This study aims to identify the presence of faults and to model the geological structure of a geothermal system in the Maninjau Lake area using the gravity method. Indication of the faults is determined based on gradient analysis of the first horizontal derivative (FHD) and second vertical derivative (SVD). While the subsurface structure modelling is done using forward modelling. The data used in this study is gravity disturbance data obtained on the GGMplus page. Based on the study's results, the geothermal system that developed in the Maninjau Lake area was the remnants of magma from the eruption of the Maninjau volcano. This residual magma becomes a heat source that controls the geothermal system in this area, as evidenced by the presence of volcanic rock formations in the form of basaltic andesite, pumice lapilli and basalt rock in the study area. Based on the analysis, the geological structure of the geothermal system in this area is composed of reservoir rock and cap rock. Based on the results of 2D modelling of subsurface geology, the reservoir rock consists of sandstone with a rock density of 2.76 gr/cm3 at a depth of up to 600 m. This study did not detect cover rock because it is located at a very shallow depth. The faults around the hot springs of Lake Maninjau were identified using derivative analysis. This fault can be used as a hydrothermal route for geothermal manifestations in the Maninjau Lake area. Geologically, the geothermal system in the Lake Maninjau area is included in the volcano-tectonic geothermal system.
Co-Authors . Agato . Timotius A.A. Ketut Agung Cahyawan W Aang Kurniady Adriati Adriati Ahmad Mushawwir Anastasia Anastasia Andi Ihwan Apriyanto Ramadhan Ardianto, Randy Ari Antasari Kushadiwijayanto Arie Antasari Kushadiwijayanto Arminingsih, Diah Astuti, Ayu Dwi Aswati, Tiara Aprileonadha Azrrue, Tsa Tsa Aisyha Yuditha Azrul Azwar Bedry Yuveno Denny Boni Pahlanop Lapanporo Christy, Maria Citra Puella Dayang Samsul Hidayah Delfi Warsita Masdat Desti, Desti Dwiria Wahyuni Elfrida Ratnawati Evi Noviani Fadziella, Syarifah Resha Faisal Faisal Faisal Faisal Faras, Angelia Millenis Febriana Diah Permata Fitriana, Zuliya Eka Fossetta, Bella Gustiani, Siska Hasanuddin Hasanuddin Hasanuddin Hasanuddin Hendro Tira Hendromi, . Heni Susiati Hermawan, Rikki Irfana Diah Faryuni Irvan Nur Prasetya Jennifer Sulastri Joko Sampurno Jumarang, Muh Ishak Kurnia, Elsa Kushadiwijayanto, Arie Antasari Latifah Maesaroh Menas Aswan Mentari Yuniar Muh. Ishak Jumarang Muhammad Sholeh Muhardi Muhardi Muhardi Muliadi Muliadi Muliadi Nadia Nadia Natasha, Ingga Noang, Aurel Vivaldi Noviani , Evi Nugraha, Alfa Nugroho, Kunto Adi Nur Hayati Nurhaliza Nurhaliza Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nursiani, Tuti Perdana, Radhitya Perdhana, Radhitya Prasetya, Irvan Nur Pratiwi, Tasya Mahardika Purnama, Desi Indah Puteri, Martsa Farindi Dwi Putri, Tiara Nusa Qonita, Ismi Rizqi Radhitya Perdhana Rahwanda Rahwanda Rezeki, Desi Saputri Sri Risko, Risko Riza Adriat Rumyati Pujiastuti Salawati Salawati Salawati, Salawati Santi, Maria Aventri Saputra, Sepbriyan Rizky Sari Sari Sri Rahayu Ningsih Suci Fitri Nazila Suteja, Aji Syntia Apriani Taruna, Fizza Tri, Mario Andika Triwerdhana, Afriadhi Tuti Nursiani Wilnaldo, Andre Yudha Arman Yuliana, Dylla Yundari, Yundari Yuniar, Mentari Yupensius Febi Ariputra Yuris Sutanto Zulfian Zulfian