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Assessing liquefaction risk and hazard mapping in a high-seismic region: a case study of Bengkulu City, Indonesia

Author

Listed:
  • Lindung Zalbuin Mase

    (Faculty of Engineering Chulalongkorn University)

  • Weeradetch Tanapalungkorn

    (Faculty of Engineering Chulalongkorn University)

  • Pakawadee Anussornrajkit

    (Faculty of Engineering Chulalongkorn University)

  • Suched Likitlersuang

    (Faculty of Engineering Chulalongkorn University
    Faculty of Engineering, Chulalongkorn University)

Abstract

This paper analyses liquefaction potential in a high seismic region in Bengkulu City, Indonesia. The liquefaction hazard map, derived from the liquefaction potential index using site investigation data and geophysical surveys, is presented. The study begins with collecting site investigation data and measuring geophysical parameters. Peak ground acceleration and potential seismic damage are estimated. Liquefaction potential analysis is based on site investigation data and maximum estimated peak ground acceleration. The integrated map represents the depth-weighted analysis, and the factor of safety, also known as the liquefaction potential index, is discussed. Results indicate the predominance of sandy soils in the study area, prone to liquefaction. Coastal and river channel areas, characterised by loose sandy soils, exhibit high liquefaction potential. The study area is also expected to experience strong motion, potentially reaching intensity level IX on the Modified Mercalli Intensity scale, indicating liquefaction susceptibility during strong earthquakes. Overall, the study results offer recommendations for local government spatial planning development.

Suggested Citation

  • Lindung Zalbuin Mase & Weeradetch Tanapalungkorn & Pakawadee Anussornrajkit & Suched Likitlersuang, 2025. "Assessing liquefaction risk and hazard mapping in a high-seismic region: a case study of Bengkulu City, Indonesia," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 121(6), pages 6597-6623, April.
    • Handle: RePEc:spr:nathaz:v:121:y:2025:i:6:d:10.1007_s11069-024-07057-3
    DOI: 10.1007/s11069-024-07057-3
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    References listed on IDEAS

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    1. Tugrul Varol & Ayhan Atesoglu & Halil Baris Ozel & Mehmet Cetin, 2023. "Copula-based multivariate standardized drought index (MSDI) and length, severity, and frequency of hydrological drought in the Upper Sakarya Basin, Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 116(3), pages 3669-3683, April.
    2. Mehmet Cetin & Asir Yuksel Kaya & Necmettin Elmastas & Fatih Adiguzel & Ahmet Emrah Siyavus & Nurhan Kocan, 2024. "Assessment of emergency gathering points and temporary shelter areas for disaster resilience in Elazıg, Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(2), pages 1925-1949, January.
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