2D Modeling of Subsurface Structures Based on Gravity Data of Mount Arjuno-Welirang
Main Article Content
Abstract
Indonesia is a country that has volcanoes stretching from west to east from Sumatra, Java to Sulawesi. Mount Arjuno-Welirang is a stratovolcano type volcano with an altitude of about 3,339 m (10,955) for Mount Arjuno while for Welirang it is about 3,156. Mount Arjuno-Welirang and its surroundings are composed by rocks sourced from Anjasmoro Volcano (Early Plistocene), Ringgit-Pundak-Butak Volcano (Middle Plistocene), Arjuno-Welirang Twin Volcanoes I and II (Late Plistocene), and Penanggungan Volcano. This research includes data processing and interpretation of the results of data processing. This research was conducted using geophysical methods, namely the gravity method. The theoretical basis used is Newton's Law. Data in the form of gravity data that has been downloaded on the Land Gravity Data Website which is then processed using Surfer software, then the Magpick Software Upward Continuation process is carried out. After that, the slicing process is carried out on the residual anomaly, then the slicing results will be used to interpret using Grav2DC Software qualitatively based on the geological map as a reference. The interpretation results on the A-B and C-D tracks obtained 4 rock layers, namely volcanic breccia, lava, tuff breccia, and tuff rock. With an error value of 8.25% for incision A-B, and 3.63% for incision C-D.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
The copyright of the received article shall be assigned to the journal as the publisher of the journal. The intended copyright includes the right to publish the article in various forms (including reprints). The journal maintains the publishing rights to the published articles. Authors are allowed to use their articles for any legal purposes deemed necessary without written permission from the journal with an acknowledgment of initial publication to this journal.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
References
Natul, A. S., Isa, M., & Sugiyanto, D. (2023). Aplikasi Metode Gaya Berat untuk Investigasi Struktur Bawah Permukaan Lapangan Panas Bumi Ie Ju, Aceh Besar. Journal of Geomintech, 7 (1), 23 – 26.
Pratikno, F. A., Jamaluddin, Ryka, H., & Prabowo, I. ( 2020). Analisis Data Gravitasi Struktur Bawah Permukaan Daerah Manifestasi Panas Bumi Waesekat, Kabupaten Buru Selatan. PETROGAS Volume 2, Nomor 1.
Setiadi, I., Purwanto, C., Kusnida, D., & Firdaus, Y. (2019). Interpretasi Geologi Berdasarkan Analisis Data Gayaberat Menggunakan Filter Optimum Upward Continuation dan Pemodelan 3D Inversi (Studi Kasus : Cekungan Akimeugah Selatan, Laut Arafura). Jurnal Geologi Kelautan Vol. 17, No, 1, 33-48.
Sutasoma, M., Maryanto, S., & Santoso, D. R. (n.d.). Identifikasi Struktur Bawah Permukaan Di Daerah Panasbumi Kasinan, Kota Batu, Berdasarkan Metode Gayaberat dan Suhu. (Doctoral dissertation, Brawijaya University).
à Nyam, F. M. E., Yomba, A. E., Nzeuga, A. R., & Soh, A. S. (2020). 2.5-D Earth Crust Density Structure Modeling of the Central Part of Cameroon Using Gravity Data. Open Journal of Earthquake Research, 09(03), 289–306. https://doi.org/10.4236/ojer.2020.93017
Chasanah, U., Febriani, S. D. A., & Minarto, E. (2021). Pendugaan Struktur Bawah Permukaan Gunung Merapi Berdasarkan Analisis Data Anomali Medan Gravitasi Citra Satelit. Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat, 18(1), 25. https://doi.org/10.20527/flux.v18i1.8456
Hoerunisa, A.-, & Sismanto, S. (2020). Interpretasi Anomali Data Gravitasi Daerah Panas Bumi “K51S” Berdasarkan Pemodelan 3D. Jurnal Fisika Indonesia, 24(3), 136. https://doi.org/10.22146/jfi.v24i3.56789
Kurniawan, F. (2023). Interpretasi Struktur Bawah Permukaan Dengan Menggunakan Metode Gayaberat Pada Daerah Panasbumi Gunung Sorik Marapi. Repository.Uinjkt.Ac.Id. https://repository.uinjkt.ac.id/dspace/handle/123456789/74362%0Ahttps://repository.uinjkt.ac.id/dspace/bitstream/123456789/74362/1/FAKHRUL KURNIAWAN-FST.pdf
Lestari, N. M. P., & Jusfarida. (2021). Pendugaan Manifestasi Panas Bumi Menggunakan Citra Landsat 8 berdasarkan Analisis Kelurusan dan Suhu Permukaan Tanah (Studi Kasus: Arjuno-Welirang). Prosiding Seminar Teknologi Kebumian Dan Kelautan (SEMITAN III) Institut Teknologi Adhi Tama Surabaya (ITATS), 3(1).
Nafian, M., Permana, N. R., Anjani, A., Gunawan, B., & Sanjaya, L. A. (2021). Identification 2D modelling of subsurface structure geothermal prospect area by gravity method: Case study in Tanuhi, South Kalimantan. Journal of Physics: Conference Series, 2019(1). https://doi.org/10.1088/1742-6596/2019/1/012081
Supriyadi, Khumaedi, Setiawan, F., & M, T. M. (2020). Pemodelan 2D Lapisan Bawah Permukaan Berdasarkan Data Gaya Berat Mikro. Jurnal Penelitian Saintek, 25(1), 44–52.
Utama, H. W., Harijoko, A., & Husein, S. (2016). Studi Vulkanisme Dan Struktur Geologi Untuk Eksplorasi Awal. March 2017.
Watts, A. B. (1982). Seamounts and flexure of the lithosphere. Nature, 297(5863), 182–183. https://doi.org/10.1038/297182a0