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Journal : International Journal of Renewable Energy Development

Characterization of a geothermal system in the shallow structure of Seulawah volcano, Indonesia, using transient electromagnetic methods Marwan, Marwan; Yanis, Muhammad; Abdullah, Faisal; Adhari, Muhammad Ridha; Nugraha, Gartika; Paembonan, Andri Yadi; Idroes, Rinaldi; Yusuf, Muhammad; Dharma, Dian Budi; Muzakir, Muzakir; Saputra, Deni; Ghani, Azman Abdul
International Journal of Renewable Energy Development Vol 14, No 3 (2025): May 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.60766

Abstract

Seulawah volcano, located in Sumatra, Indonesia, is renowned for its geothermal potential, a crucial source of cleaner energy for Indonesia’s future growth and security. Available studies of Seulawah volcano primarily focus on its general geological, geochemical, and regional characteristics, with limited research on its shallow subsurface conditions. This study aimed to fill this research gap and enhance our understanding of the geothermal system of Seulawah volcano. There are two objectives of this study: (1) to conduct a transient electromagnetic (TEM) survey across the study area and (2) to better visualize and characterize the shallow subsurface conditions of the geothermal system of Seulawah volcano. The TEM method, which employed 60 stations (with distances between stations ranging from 0.5 to 1 km) and intersected several geothermal manifestations as well as local and regional faults, was used to achieve the objectives of this study. The Occam algorithm was applied for 1D inversion of TEM data, which was then validated using magnetotelluric data. The results of this study indicate that the geothermal system of Seulawah volcano has the potential to generate up to 230 Mwe of electrical energy. Moreover, the shallow depth (<200m) of Seulawah volcano is dominated by a resistive zone, which is interpreted to be related to the basaltic rocks of the Lamteuba Formation. The reservoir layer is located at depths of 200–500 m, exhibiting moderate resistivity values of >10 Ωm. At a depth of 500 m, a conductive layer with resistivity values <10 Ωm was observed, interpreted as a clay cap where fluids from the reservoir layer accumulate. Validation with magnetotelluric data shows results consistent with the TEM data, confirming that the findings of this study are reliable. These findings contribute to a deeper understanding of the geothermal system of Seulawah volcano and are expected to support the development of greener, renewable energy sources for Indonesia.
Co-Authors A, Bakhtiar Abdul Hamid Habbe, Abdul Hamid Abrar Muslim Ade Tinofa, Nelva Aida Imtihana, Aida Amelia, Marysha Aminuyati Andri Yadi Paembonan Andrian Kaifan Anwar Deli Asmaul Husna Asyqari, Amir Deli, Anwar Deni Saputra Dharma, Dian Budi Edy Miswar Edy Miswar, Edy Evi Yufita Fandana, Lisa Fanshury, Mohammed Agiel Poetra Farokh, Ida Maziyyatul Fauziah, Tantri Hasna Firman syah, Firman Fitri, Gustina Gani, Fauzi A. Gede Arya Putra, I Dewa Ghani, Azman Abdul Ghufron Hamzah Grefyolin Simbolon, Theresia Habibi, Roni Halim Zaini, Halim Herlambang, Saifuddin Hermita Arif Hesti Meilina Hosaini, Hosaini Ida Ayu Putu Sri Widnyani Indahsari, Fitriana N. Insyafrijal Insyafrijal Irawan, M. Ferry Irham Irham Iskandar Iskandar Ismail Ismail Juwanda, Juwanda Kamisnuddin, Kamisnuddin Khoirotun Nisa, Ani Kinar sih Kurniati Kurniati Lubis, Putri Handayani M. Yogi Riyantama Isjoni M. Yunus Marwan Marwan Masud, Anis Anshari Meisari, Yola Dyfa Miftahul Jannah Miswar, Khairul Moebaraq, T Ridzky Mohamad Faqihudin Musyafa Muhammad Irham Muhammad Irham Muhammad Nasir Muhammad Riandi Muhammad Riandi, Muhammad Muhammad Ridha Adhari, Muhammad Ridha Muhammad Rusdi Muhammad Rusdi Muhammad Yanis Muhammad Yusuf Muhammad, Mediaty Muhibbuddin Muhibbuddin Munardy, Munardy Muslim*, Abrar Muzakir Nahar, Nahar Nazli Ismail Nazri bin Nordin, Ts. Saiful Nisa, Ani Khoirotun Nopita Sari Noptario Noptario, Noptario Nugraha, Gartika Pardi Pardi, Pardi Prayoga, Doni Putri, Nadya Syafira Qalbi, Harisa Bilhaqqi Rahman, Supandi Rajibussalim Rajibussalim Raupu, Mutiara Rifqi Syahputra Rinaldi Idroes Riyadhsyah, Riyadhsyah Ruhana, Ruhana Sabani, Tria Asri Nur Sahabi, Ansar Siregar, Anne Novia Duana Subiyantoro, Fitrohim Sugianto Sugianto Suhendrayatna Suhendrayatna Sukmawati, Siti Supardin Supardin, Supardin Syafrial Fachri Pane, Syafrial Fachri Syafruddin Syafruddin Syaifuddin Syaifuddin Syaifuddin, Muh. Syarif Syarif Teuku Maimun Tika, Aulia Saufayuk Tinofa, Nelva Ade Utami, Rizky Yunus, Yuhanis Yusniyanti, Erna Zariansyah, Zariansyah Zulfalina, Zulfalina