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Journal : Physics Education Research Journal

2D Modeling of Subsurface Structures Based on Gravity Data of Mount Arjuno-Welirang Handayani, Alifa Tri; Adhi, M. Aryono; Supriyadi; Nurcahya, Budi Eka
Physics Education Research Journal Vol. 7 No. 2 (2025)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

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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.
Co-Authors A. Fauzi Pohan A.A. Ketut Agung Cahyawan W Adam Ardiansyah Adi Susilo Agus Subekti Agus Subekti Agus Suprianto Aji Purwinarko, Aji Anisa, Rahma Darin Ari Setiawan Ari Setiawan Bambang Subali Bilqis El Farsiyyi, Billqis El Farsiyyi Budi Astuti Budi Eka Nurcahya Budi Eka Nurcahya, Budi Eka Budi Naini Mindyarto, Budi Naini Budi Wibowo, Nugroho Cindiwati Danastri L. P. Tampubolon Desi Mustami Limayukha, Desi Mustami Limayukha Ellianawati, Ellianawati Elsa Fadlika Widyantari, Elsa Fadlika Widyantari Farizky Hisyam Fatoni, Iza Handayani, Alifa Tri Herdiyanti, Enesty Ilqia Rahma, Ilqia Rahma Lestari, Putri Yunia Maulida Nur Azzahra Minhat, Minhat Muh Sarkowi Muhammad Fathur Rouf Hasan Muttaqin, Rudhotul Muzli, Muzli Nanik Wijayati Noor, Yusmaniar Afifah Nugroho Budi Wibowo Nuni Widiarti Nurul Priyantari Parmin Pratiwi Dwijananti Prayitno, Wasi Sakti Wiwit Putra, Bayu Ramadhani Putra, Ngurah Made Darma Putut Marwoto Rahmania Sofyana Ulya, Rahmania Sofyana Ulya Rina Dwi Indriana Rooseno, Yohan Rr. Sri Endang Pujiastuti S Mursiti Sarwi Sismanto Sismanto Siti Rohmah Siti Wahyuni Siti Zulaikah Sofian, Sofian Sorja Koesuma Sudarmin Sudarmin Sudarmin Sudarmin Suharto Linuwih Sujabar, Sujabar Sulaiman, Ryan Sunyoto Eko Nugroho, Sunyoto Eko Supriyadi Supriyadi Supriyadi Supriyadi Supriyadi Suryanto, Wiwit Suyanto Suyanto Talitha Widiatningrum Tamba, Shallsa Bella. W Ummi Fauziyah Wahyu Hardyanto Wahyudi Wahyudi Wahyudi Wahyudi Wahyudi Wahyudi Wiyanto - Yayuk Tutiek Supriyanti Yosephine Debbie Damayanti Yosepphiene Debbie Damayani Yusof, Mohammad Mubarrak Mohd