Geothermal potential analysis using 3d modeling of subsurface structures based on the Gravity Anomaly in the Mount Lawu area, Central Java

Feby Puspita Sari*  -  Universitas Islam Negeri Syarif Hidayatullah Jakarta, Indonesia
Andini Restiana  -  Universitas Islam Negeri Syarif Hidayatullah Jakarta, Indonesia
Nabila Firya Wardhianty  -  Universitas Islam Negeri Syarif Hidayatullah Jakarta, Indonesia

(*) Corresponding Author
DOI: 10.21580/jnsmr.2023.9.1.14792

Over time, energy needs will continue to increase. Dependence on the use of fossil energy results in the availability of such energy will run out at any time, so it is necessary to develop research on geothermal energy that is environmentally friendly and renewable. One of the Geothermal Work areas is on Mount Lawu, located at coordinates between 111°15' east longitude and 7°30' south latitude in several districts Central Java Province and East Java Province. The purpose of this study is to provide information related to geothermal potential using the gravity method by knowing the temperature of the area and the 3D modeling of subsurface structures. Based on the results of the Second Vertical Derivative (SVD) analysis, three normal faults were found in geothermal sources. The modeling results show that the residual anomaly map depicts a distribution of high anomalies ranging between 2 mGal up to 6.5 mGal scattered from North to South and East to West, suspected to be caused by lava rock intrusion. The results of the 3D inversion model show there are three layers, namely clay rock, which is suspected to be cap rock at a depth of 500 - 2500 m, pyroclastic lava rock, which is suspected to be as a reservoir at a depth of 3000 - 4500 m, and lava, which is suspected to be as a reservoir heat source at a depth of 5000 - 8000 m. Based on the map in Land Surface Temperature (LST) obtained the temperature value of Mount Lawu ranging from 3.14 °C - to 23.25 °C.

Keywords: Geothermal energy; Mount Lawu; gravity method; 3D inversion; Land Surface Temperature (LST)

  1. Abdurachman, K, et al, Peta Geologi Gunungapi Lawu, Jawa Tengah-Jawa Timur, Direktoral Vulkanologi, Pusat Vulkanologi dan Mitigasi Bencana Geologi, Indonesia.,t.t.
  2. Amalisana, B., Rokhmatullah, & Hernina, R. (2017). Land Cover Analysis by Using Pixel-Based and Object-Based Image Classification Method in Bogor. IOP Conference Series: Earth and Environmental Science, 98(1). Retrieved from https://doi.org/10.1088/1755-1315/98/1/012005
  3. Araffa, S. A. S., Helaly, A. S., Khozium, A., Lala, A. M. S., Soliman, S. A., & Hassan, N. M. (2015). Delineating groundwater and subsurface structures by using 2D resistivity, gravity and 3D magnetic data interpretation around Cairo–Belbies Desert road, Egypt. NRIAG Journal of Astronomy and Geophysics, 4(1), 134–146.
  4. Bodvarsson, G.S. and Witherspoon, P.A.,1989, "Geothermal reservoir engineering Part I, Geothermal Science and Technology, 2 (1), 1-69.
  5. Dickson, M.H. dan Fanelli, M., (2003), Geothermal Energy, Instituto di Geoscienze Georisorse, Italy.
  6. Dwikorianto, T. dan Ciptadi. 2006. Eksplorasi, Eksploitasi & Pengembangan Panasbumi di Indonesia. Seminar Nasional HM Teknik Geologi UNDIP 2006. Semarang.
  7. Grandis, H. (2009). Pengantar Pemodelan Inversi Geofisika. Jurnal Himpunan Ahli Geofisika, Jakarta.
  8. Hall R, Blundell DJ. Tectonic evolution of southeast Asia. vol. 106. Geological Society Publishing House; 1996.
  9. Hartati, A., 2012. Identifikasi Struktur Patahan Berdasarkan Analisa Derivative Metode Gayaberat di Pulau Sulawesi. Universitas Indonesia.
  10. Helmi, H., Kurniawan, H., Adam, W., Studi, P., & Geologi, T. (2020). Kontrol Geologi Terhadap Pemunculan Manifestasi Panasbumi di Kawasan Gunung Lawu, 5(1), 1–9.
  11. Hermawan, D., & Permana, L. (2018). Keprospekan Panas Bumi Gunung Lawu Berdasarkan Kajian Vulkanostratigrafi, 16, 37–51.
  12. Isroi, A. R. (2014). Ekesplorasi Energi Geothermal dengan Menggunakan Metode Gravity Sebagai Tahap Awal di Daerah Prospek Geothermal Gunung Kelud. Skripsi Institut Teknologi Bandung.
  13. J. Purnomo, S. Koesuma, dan M. Yunianto. (2014). Pemisahan Anomali Regional Residual pada Metode Gravitasi Menggunakan Metode Moving Average, Polynomial dan Inversion. Indonesian Journal of Applied Physics, 3(1), 10–20.
  14. Laghari, W.M., Baloch, M.U., Mengal, M.A. and Shah, S. J. (2014). Performance Analysis of Analog Butterworth Low Pass Filter as Compared to Chebyshev Type-I Filter, Chebyshev Type-II Filter and Elliptical Filter. Circuits and Systems, 5, 209–216.
  15. Latifah, I. (2010). Penentuan Anomali Bouguer dan Densitas Rata- Rata Batuan Berdasrkan Data Gravitasi di Daerah Semarang.
  16. Lewerissa, R. (2020). Overview of Geothermal Potential in Momiwaren , South Manokwari Regency using Earth Gravity Field Analysis, 3(2), 97–109.
  17. Luthfi, M., Haryanto, A.D., Hutabarat, J., & Siagian, H. (2020). Pemodelan Sistem Panasbumi pada Sumur ML-1, ML-2 dan ML-3 berdasarkan Analisis Petrografi dan Magnetotelurik di Lapangan Panasbumi Sorik Marapi, Kabupaten Mandailing Natal, Sumatera Utara. Jurnal Geosains, 4(2), 154–162.
  18. Meilani, H., & Wuryandani, D. (2010). Potensi Panas Bumi Sebagai Energi Alternatif Pengganti Bahan Bakar Fosil Untuk Pembangkit Tenaga Listrik Di Indonesia. Jurnal Ekonomi Dan Kebijakan Publik, 1(1), 47–74.
  19. Nur, Sri. & Krisbiantoro, A. (2014). Analisis Distribusi Temperatur Permukaan Tanah Wilayah Potensi Panas Bumi Menggunakan Teknik Penginderaan Jauh di Gunung Lamongan. Tiris-Probolinggo, Jawa Timur: Berkala Fisika, 17(2), 68.
  20. Rahma, Manrulu., 2012, Pemodelan Bawah Permukaan Gunungapi Merapi Berdasarkan Anomali Gravitasi Setelah Letusan Besar 2010, Thesis, UGM Jogjakarta.
  21. Reynold, J., M., An Introduction to Applied and Environmental Geophysics, Chichester: John Wiley and Sons (1997).
  22. Telford, W.M., L. P. G., Sheriff, R. E., & Keys, D. A. (2016). Applied Geophysics.
  23. Yulistina, S., Zaenuudin, A., Haerudin, N., 2020. Studi Identifikasi Struktur Geologi Bawah Permukaan Untuk Mengetahui Sistem Sesar Berdasarkan Analisis First Horizontal Derivative ( FHD ), Second Vertical Derivative ( SVD ) , Dan 2 , 5D Forward Modeling Di Daerah Manokwari Papua Barat. Jurnal Geofisika Eksplorasi, 4(2).
  24. Widodo, S., Kusnadi, D., Kholid, M., & Rezky, Y. (2009). Evaluasi Potensi Panas Bumi Daerah Gunung Endut Kabupaten Lebak - Provinsi Banten, 357–367. Retrieved from //lib.pasca.unpak.ac.id/index.php?p=show_detail&id=13113&keywords=
  25. Zaenudin, A., Sarkowi, M., S. (2013). Pemodelan Sintetik Gradien Gayaberat Untuk Identifikasi Sesar.

Open Access Copyright (c) 2023 Journal of Natural Sciences and Mathematics Research
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Journal of Natural Sciences and Mathematics Research
Published by Faculty of Science and Technology
Universitas Islam Negeri Walisongo Semarang

Jl Prof. Dr. Hamka Kampus III Ngaliyan Semarang 50185
Website: https://journal.walisongo.ac.id/index.php/JNSMR
Email:jnsmr@walisongo.ac.id

ISSN: 2614-6487 (Print)
ISSN: 2460-4453 (Online)

View My Stats

Lisensi Creative Commons

This work is licensed under a Creative Commons Lisensi Creative Commons .

apps