Sensitivity Analysis of Liquefaction Potential and Hazard Mapping in the Chattogram Metropolitan Area Using Geotechnical and GIS Techniques

DOI

10.2991/978-94-6463-884-4_25How to use a DOI?

Keywords

Liquefaction potential; Seismic hazard; Chattogram Metropolitan Area; Safety factor; Liquefaction Potential Index; Earthquake Induced Liquefaction; GIS-based Hazard Mapping

Abstract

The dynamic nature and sudden occurrence in loose, saturated soil deposition make liquefaction the major damage catalyst during an earthquake. Areas liquefied in the built-up areas suffer significantly, and there is substantial evidence of such occurrence since the term liquefaction coins [7]. Being an active seismic region and the major port city of Bangladesh, Chattogram lies under major threat of liquefaction induced hazard as the city develops on low-plastic fine soils having considerable fine sand contents. Thirty-four borehole data have been utilized to prepare a liquefaction hazard map over the built-up area of Chattogram City. However, the water level has been seen fluctuating depending on weather and tidal conditions; hence, it has significant effects on liquefaction-induced hazards. Besides that, the magnitude of the earthquake can alter the damage scenario. Summing up all of this, this research aims to conduct a sensitivity analysis to examine the effects of water table and seismic magnitude on probable liquefaction hazards in the city center. Although no previous datasets have been reported for liquefaction hazards, implicit measurements clearly agree with the overall susceptibility condition. In a nutshell, this research provides an overview of the conditions of liquefaction hazards that can guide the city planner and policymaker in effective mitigation and future development.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Anindya Baidya
AU  - Shantunu Chowdhury
AU  - Aishik Gupta
AU  - Opu Chandra Debnath
AU  - Md. Aftabur Rahman
PY  - 2025
DA  - 2025/11/18
TI  - Sensitivity Analysis of Liquefaction Potential and Hazard Mapping in the Chattogram Metropolitan Area Using Geotechnical and GIS Techniques
BT  - Proceedings of the 8th International Conference on Engineering Research, Innovation, and Education 2025 (ICERIE 2025)
PB  - Atlantis Press
SP  - 206
EP  - 213
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-884-4_25
DO  - 10.2991/978-94-6463-884-4_25
ID  - Baidya2025
ER  -