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All Journal Rekayasa Sipil Teknisia Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Civil Engineering Dimension Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Cendekia : Jurnal Pengabdian Masyarakat APTEK Jurnal Geosaintek
Lindung Zalbuin Mase
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Humanities Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences Transportation

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Magnitude dependent liquefaction potential under deterministic earthquake scenarios in Lebong Sakti District, Bengkulu Province, Indonesia Tri Bintang Pratitis; Lindung Zalbuin Mase; Khairul Amri; Rena Misliniyati; Muharram Nur Fikri; Diefi Deayuzeta
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 12, No 2 (2026)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/gravity.v12i2.41024

Abstract

Lebong Sakti District, located in Lebong Regency, Bengkulu Province, lies within an active tectonic setting influenced by the Sumatran Fault system and is characterized by fluvial deposits associated with the Ketahun River flowing into Lake Tes. These conditions contribute to the presence seismic events. This study evaluates liquefaction potential in Lebong Sakti District, Lebong Regency, Bengkulu using deterministic earthquake scenarios. The analysis is based on the 2017 earthquake (Mw 5.0) and additional scenarios of Mw 6.0, Mw 7.0, Mw 8.0, and Mw 9.0 to examine the sensitivity of liquefaction potential to increasing seismic energy. Liquefaction potential was evaluated using the simplified procedure through the calculation of Cyclic Stress Ratio (CSR), Cyclic Resistance Ratio (CRR), and Factor of Safety (FS), while the overall hazard level was assessed using the Liquefaction Potential Index (LPI). The results show that increasing earthquake magnitude significantly increases Peak Ground Acceleration (PGA) and CSR while reducing FS. The average LPI rises from 0.00 at Mw 5.0 to 15.67 at Mw 9.0, indicating higher liquefaction hazard levels. These findings highlight the importance of deterministic earthquake scenarios for geotechnical hazard assessment and disaster mitigation in seismic regions.
Co-Authors Aditia Febriansya Andri Krisnandi Somantri Annisa Fitria Edriani Anugrah Juniarto, Danu Atmy Verani R Sihombing Diefi Deayuzeta FEPY SUPRIANI Hardiansyah Hardiansyah Hardiansyah Julia Purnama Sari Khairul Amri Maha Deta Winusi Mely Anisa Muharram Nur Fikri Mulyadi Yuswandono Rena Misliniyati Reni Raafidiani Risma Nur lndah Rizki Akbar Sartika Meitry Shapna Auliya Balqis Siti Patimah Surya Faadhilah Tri Bintang Pratitis