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Ira Mutiara Anjasmara
Institut Teknologi Sepuluh Nopember
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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Fault Identification Using Satellite Imagery, Gravity, and Seismicity Data on Lombok Island Muhammad Aryanto; Ira Mutiara Anjasmara; Putra Maulida
Jurnal Penelitian Pendidikan IPA Vol 11 No 9 (2025): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i9.12533

Abstract

Lombok Island has a high level of earthquake vulnerability due to local tectonic activities. Although most earthquakes on land have small magnitudes (M < 5), their proximity to settlements has the potential to cause significant impacts. This study aims to identify the potential for active faults using a multi-data approach, specifically utilizing gravity anomaly data from GGMplus. In addition, Sentinel-1 data is used for surface lineament extraction and DEMNAS for topography. Analysis of gravity data utilizing GGMPlus reveals that the Batujahe Fault exhibits thrust faulting characteristics, whereas the South Lombok Fault displays normal faulting behavior. Automated lineament extraction yielded a total of 54 surface structural lineaments within the study area, spanning a cumulative length of 478 km. These results provide a shorter fault length than the existing fault map. Statistical analysis of the extracted lineaments revealed three dominant trends: N-S, NE-SW, and NW-SE, with the N-S trend being the most predominant. Notably, these findings diverge from prior studies, which classified the Batujahe Fault as a strike-slip fault and the South Lombok Fault as a thrust fault, underscoring the complexities of fault dynamics in the region, however derivative methods fail to detect the Alas Strait strike-slip fault.
Co-Authors Amien Widodo Andi Rahmadiansah Aninda Nurry Anita Thea Saraswati Bella Esti Ajeng Syahputri Budi Joko Purnomo Dedi Aji Kuncara Fajar Setio Adi I Dewa Amertha Sanjiwani Khomsin Khomsin, Khomsin Kurniawan, Akbar Lukman Hakim Mansur Muhamadi Meiriska Yusfania Mokhamad Nur Cahyadi, Mokhamad Nur Muhammad Aryanto Muhammad Taufik Mukhammad Nur Sulaiman Nisaa Ul Muthmainnah Nurnaning Aisyah Pratomo, Danar Guruh Pribadi, Cherie Bhekti Putra Maulida Rahayu, Safri Yanti Risca Hartikasari Rizki Fahrudin Ulin Rizky Romadhon Wahyu Ristanto Widy Putra Yan Adrian Sidharta Yuwono Yuwono