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Yoga Dharma Persada
Indonesian Agency of Meteorology Climatology and Geophysics, Jalan Angkasa 1 No. 2, Jakarta 10610, Indonesia
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Investigation of Liquefaction in Balaroa, Petobo, and Jonooge (Central Sulawesi, Indonesia) Caused by the 2018 Palu Earthquake Sequence Rahmat Triyono; Sri Widiyantoro; Zulfakriza 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; Sujabar Sujabar
Journal of Engineering and Technological Sciences Vol. 56 No. 3 (2024)
Publisher : Directorate for Research and Innovation, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.3.1

Abstract

The liquefaction that occurred in the city of Palu on September 28, 2018, was caused by a series of significant earthquakes that took place in a relatively short time around 25 minutes after the main earthquake of magnitude 7.5. This event was followed by aftershocks of magnitudes 6.4, 6.2, and 6.1. The magnitude 6.2 aftershock occurred at 10.16 UTC, while the magnitude 6.1 aftershock occurred at 10.25 UTC. These were both located very close to the liquefaction locations in Balaroa, Petobo, and Jono Oge. We investigated the mainshock and the three aftershocks using the NCEER method based on Vs30 measurements and data from the drill liquefaction locations at Balaroa, Petobo, and Jono Oge. We found that the liquefaction was not only caused by the main earthquake but also by the subsequent aftershocks that occurred within 25 minutes after the mainshock.
Co-Authors Aditya Setyo Rahman Ardian Yudhi Octantyo Bayu Pranata Dadang Permana Fajri Syukur Rahmatullah Fildzah Zaniati Fadhilah Mohamad Taufik Gunawan Nur Fani Habibah Nur Hidayati Oktavia Oriza Sativa Pepen Supendi Rahmat Triyono Robby Wallansha Sri Widiyantoro Sujabar Sujabar Z. Zulfakriza