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All Journal Jurnal Matematika & Sains Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences JURNAL METEOROLOGI DAN GEOFISIKA Jurnal Geofisika Journal of Engineering and Technological Sciences
Sri Widiyantoro
Global Geophysics Research Division, Faculty Of Mining And Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, Jawa Barat 40132, Indonesia
Aerospace Engineering Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Mathematics Physics

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Journal : Journal of Engineering and Technological Sciences

 1 
Geometrically Complex, Relatively Weak, and Subcritically Stressed Lembang Fault May Lead to a Magnitude 7.0 Earthquake Palgunadi, Kadek Hendrawan; Simanjuntak, Andrean Vesalius Hasiholan; Ry, Rexha Verdhora; Daryono, Mudrik Rahmawan; Widiyantoro, Sri; Warnana, Dwa Desa; Triahandini, Agnis; Syaifuddin, Firman; Ahmadiyah, Adhatus Solichah; Sirait, Anne Meylani Magdalena; Suryanto, Wiwit
Journal of Engineering and Technological Sciences Vol. 57 No. 1 (2025): February
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.1.10

Abstract

The Lembang Fault is one of the major faults in the province of West Java, approximately 10 km north of its capital, Bandung, a city inhabited by more than 2 million people. The fault exhibits distinct geometrical characteristics in its 29 km length, transitioning from normal, strike-slip, to vertical faulting mechanisms. Two studies have evidence of a normal fault with a dip direction to the north and a thrust fault with a dip direction to the south. Despite the lack of significant recorded earthquakes, the Lembang Fault is active and poses a high seismic hazard to the surrounding region. Previous deformation studies estimate that the fault could produce earthquakes of magnitude 6.7 to 7.0, though these estimates do not account for the fault's unique geometry, which includes bends at both its eastern and western ends. This geometrical complexity can significantly affect slip distribution, potentially leading to over- or underestimating earthquake magnitude. In this study, we assess the earthquake potential of the Lembang Fault using 3D dynamic rupture simulations that incorporate the fault's geometrical complexity, 3D velocity structure, and plastic deformation. Our simulations indicate that the fault's complex geometry enhances rupture slip to the east while halting it to the west, resulting in rupture along 80% of the fault's total length. However, according to our model, a self-sustained runaway rupture scenario occurs only if the fault is characterized by relatively weak apparent strength, subcritical stress, and overpressurization. This worst-case scenario could result in a magnitude 7.0 earthquake, posing a significant threat to the densely populated nearby city. Therefore, our findings have crucial implications for seismic hazard assessment around the Lembang Fault.
Correction to: Investigation of Liquefaction in Balaroa, Petobo, and Jonooge (Central Sulawesi, Indonesia) Caused by the 2018 Palu Earthquake Sequence Triyono, Rahmat; Widiyantoro, Sri; Zulfakriza, Zulfakriza; Supendi, Pepen; Rahman, Aditya Setyo; Gunawan, Mohamad Taufik; Oktavia, Nur Hidayati; Rahmatullah, Fajri Syukur; Fadhilah, Fildzah Zaniati; Habibah, Nur Fani; Sativa, Oriza; Permana, Dadang; Wallansha, Robby; Octantyo, Ardian Yudhi; Persada, Yoga Dharma; Pranata, Bayu; Sujabar, Sujabar
Journal of Engineering and Technological Sciences Vol. 57 No. 2 (2025): Vol. 57 No. 2 (2025): April
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.2.10

Abstract

Correction to:  Journal of Engineering and Technological Sciences https://doi.org/10.5614/j.eng.technol.sci.2024.56.3.1   The article titled "Investigation of Liquefaction in Balaroa, Petobo, and Jonooge (Central Sulawesi, Indonesia) Caused by the 2018 Palu Earthquake Sequence" , written by Rahmat Triyono, Sri Widiyantoro, Zulfakriza, Pepen Supendi, Aditya Setyo Rahman, Mohamad Taufik Gunawan, Nur Hidayati Oktavia, Fajri Syukur Rahmatullah,Fildzah Zaniati Fadhilah, Nur Fani Habibah, Oriza Sativa, Dadang Permana, Robby Wallansha, Ardian Yudhi Octantyo, Yoga Dharma Persada, Bayu Pranata, and Sujabar, was originally published electronically on thepublisher’s internet portal on 19 June 2024 . The corresponding author's affiliation at the time of publication was as follows: (1) Indonesian Agency of Meteorology, Climatology, and Geophysics, Jalan Angkasa 1 No. 2, Jakarta 10610, Indonesia; and (2) Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, Indonesia.   Subsequently, the authors decided to update the corresponding author's affiliation to: (1) Geophysical Engineering Graduate Program, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, Indonesia; and (2) Indonesian Agency of Meteorology, Climatology, and Geophysics, Jalan Angkasa 1 No. 2, Jakarta 10610, Indonesia.   The original article can be found online at https://doi.org/10.5614/j.eng.technol.sci.2024.56.3.1
Co-Authors A. Afnimar A. Ardianto A. D. Nugraha A. Riyanto Adhatus Solichah Ahmadiyah, Adhatus Solichah Andri Dian Nugraha Ardjuna, Arii Arii Ardjuna Auly, Muhammad Fariq Riesky Awali Priyono Awan Gunawan B. S. Prabowo Bambang Sunardi Bayu Pranata, Bayu Daryono, Mudrik Rahmawan David P. Sahara Dicky Ahmad Zaky Dwa Desa Warnana Edy Santoso Edy Soewono Fadhilah, Fildzah Zaniati Gede Suantika Gede Suantika Gede Suantika Gunawan Ibrahim Gunawan Ibrahim Gunawan, Mohamad Taufik Guntur Pasau H. Afif Habibah, Nur Fani Hendro Nugroho Hiroaki Yamanaka I Nyoman Sukanta irwan meilano Jimmi Nugraha M. Muzli Masturyono Masturyono Masyhur Irsyam Moehammad Awaluddin Mohamad Ridwan Mohamad Ridwan Nanang T. Puspito Nanang T. Puspito Octantyo, Ardian Yudhi Oktavia, Nur Hidayati Palgunadi, Kadek Hendrawan Pepen Supendi Permana, Dadang Persada, Yoga Dharma Pupung Susilanto Rahman, Aditya Setyo Rahmatullah, Fajri Syukur Ramdhan, Mohammad  Rexha Verdhora Ry Ry, Rexha Verdhora Ry, Rexha Verdhora Saputra, Ryandika Sativa, Oriza Septyana, Tepy Shengji Wei Simanjuntak, Andrean Vesalius Hasiholan Sirait, Anne Meylani Magdalena Sorja Koesuma Suhardja, Sandy Kurniawan Sujabar, Sujabar Sulastri Sulastri Supendi, Pepen Supriyanto Rohadi Suryanto, Wiwit Syaifuddin, Firman Tepy Septyana Thomas Hardy Triahandini, Agnis Triyono, Rahmat Wallansha, Robby Wandono Wandono Wiko Setyonegoro Y.M. Husni Yoichi Fukuda Z. Zulfakriza Zulfakriza, Zulfakriza