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

Lindung Zalbuin Mase (), Weeradetch Tanapalungkorn (), Pakawadee Anussornrajkit () and Suched Likitlersuang ()
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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

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2025, vol. 121, issue 6, No 10, 6597-6623

Abstract: 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.

Keywords: Bengkulu City; Earthquake; Liquefaction; Liquefaction hazard map; Peak ground acceleration (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11069-024-07057-3

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