Analysis of Geothermal Potential Using Gravity Method in Way Ratai Area, Pesawaran Regency, Lampung

Putri Adelia, Suwondo -, Agustya Adi Martha, Tiara Grace Franzisca

Abstract


Way Ratai, Pesawaran is one of the areas in Lampung that has a surface manifestation, in the form of geothermal potential. Based on data from the Directorate of Geothermal in 2017, Way Ratai has a potential of more than 330 MW with the manifestation of hot springs and hot steam. This study aimed to determine the distribution of subsurface density of Mount Way Ratai, Pesawaran, Lampung region by using ggmplus satellite gravity data. Based on fault analysis method and 2D forward modeling in Oasis Montaj software. The results showed that the geothermal area of Way Ratai identified 2 types of faults, namely reverse faults and normal fault. Based on the results of forward modeling, subsurface density of Way Ratai area, Lampung offering can be identified at a density of 1.2 gr/cc suspected alteration rocks in the form of clay minerals, density of 1.55 gr/cc suspected sand gravel, density of 1.6 gr/cc suspected Tuff rocks, density of 2.3 gr/cc suspected breccia rocks and conglomerates, density 2.6 gr/cc suspected schist and chert, and density 2.99 gr/cc suspected basalt rocks.

Keywords


Gravity Data, GGMplus, Oasis Montaj, Geothermal, Way Ratai

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References


Hall R, Blundell DJ. Tectonic evolution of southeast Asia. vol. 106. Geological Society Publishing House; 1996

Alper Kıyak, Can Karavul, Levent Gülen, Ertan Pekşen, A. Rıza Kılıç (2015), Assessment of geothermal energy potential by geophysical methods: Nevşehir Region, Central Anatolia, Elsevier Journal of Volcanology and Geothermal Research, Pages 55-64.

Peter Bayer, Guillaume Attard, Philipp Blum, Kathrin Menberg, May 2019, The geothermal potential of cities, Elsevier Renewable and Sustainable Energy Reviews, Volume 106, Pages 17-30.

G. Direktorat Panas Bumi, Direktorat Jenderal EBTKE Pusat Sumber Daya Mineral, Batubara, dan Panas Bumi, Potensi Panas Bumi Indonesia, 2017.

S. Bruce Kohrn, Chloe Bonet, Dan DiFrancesco, Helen Gibson, January 2011, Geothermal Exploration Using Gravity Gradiometry – a Salton Sea Example, researchgate.

Putri, M. K., Suharno, dan Hidayatika, A. 2014. Introduction to Geothermal System of Way Ratai. Proceedings Indonesia International Geothermal Convention & Exhibition, 1–5.

Sorja Koesuma, Mela Budiani Septianingsih, and Budi Legowo, Identification of Subsurface Structures of Geothermal Potential Area in East of Mount Lawu Using The Gravity Method, Indonesian Journal of Applied Physics (2020) Vol.10 No.1 halaman 65.

Donovan, R., Karyanto., Ordas Sewanto., 2021. Studi Sifat Termal Batuan Daerah Lapangan Panas Bumi Way Ratai Berdasarkan Pengukuran Metode Konduktivitas Termal. Jurnal Geofisika Eksplorasi Vol. 4/No. 3

Mangga S. Andi, ddk. 2010. Peta geologi lembar Tanjung Katang, Sumatera. Pusat Survei Geologi. Bandung: Pusat Penelitian dan Pengembangan Geologi, 1993.

Torkis, R., 2012. Analisa dan Pemodelan Struktur Bawah Permukaan Berdasarkan Metode Gayaberat di Daerah Prospek Panas Bumi Gunung Lawu. Skripsi. Universitas Indonesia. Depok.

International Geothermal Association. (2004).

Suharno. 2013. Eksplorasi Geothermal. Lampung: Penerbit Lembaga Penelitian Universitas Lampung.

Blakey, R.J., 1995, Potensial Theory in Gravity and Magnetic Applications, Cambridge University Press.

Andrian, Jefri (2018). Pemetaan Struktur Basemen Menggunakan Metode Energy Spectral Analysis – Multi Window Test (ESA-MWT) Data Gravitasi Pada Cekungan Sumatera Utara. Universitas Indonesia.

Zulfawati, Laela, Suhayat Minardi, Lily Maysari Angraini. 2019. Analisis Spektrum Pada Data Gaya Berat Daerah Lombok Tengah Dan Lombok Timur Untuk Menentukan Estimasi Ketebalan Sedimen. Jurnal Inovasi dan Pembelajaran Fisika, Volume 06, No. 1, Mei 2019, hal. 34-4.

Zaenudin, A., Sarkowi, M., dan Suharno. (2013, November). Pemodelan Sintetik Gradien Gaya Berat Untuk Identfikasi Sesar. In Seminar Nasional Sains & Teknologi V (pp. 269-277). Jurusan Teknik Geofisika Fakultas Teknik, Universitas Lampung.

Lestari, I. & Sarkowi, M. (2013). Analisis Struktur Patahan Daerah Panasbumi Lahendong - Tompaso Sulawesi Utara Berdasarkan Data Second Vertical Derivative (SVD) Anomali Gayaberat, Seminar Nasional Sains & Teknologi V, Lembaga Penelitian Universitas Lampung 19-20 November 2013

Dan D. Kosloff, Edip Baysal, Forward modeling by a Fourier method, Geophysics (1982) 47 (10): 1402–1412

Hartati, Sri (2012). Peningkatan Hasil Belajar Ipa Melalui Penerapan Model Pembelajaran Student Teams Achievement Divisions (Stad) Bagi Siswa Kelas IV Sd Puri 01 Kecamatan Pati Kabupaten Pati tahun Pelajaran 2012/2013. Skripsi thesis, Universitas Muhammadiyah Surakarta.

M. Nafian, N R Permana, A Anjani, B Gunawan and L A Sanjaya, 2019 Identification 2D Modelling of Subsurface Structure Geothermal Prospect Area by Gravity Method: Case Study in Tanuhi, South Kalimantan, Journal of Physics: Conference Series.




DOI: https://doi.org/10.15408/fiziya.v6i2.34659 Abstract - 0 PDF - 0 PDF - 0

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