Nonlinear Subsoil Seismic Response in Boumerdes: Toward Seismic Microzonation and Urban Planning Support

Tounsia Boudina; Sofiane Bounouni; Naas Alout

doi:10.48084/etasr.18877

Authors

Tounsia Boudina Department of Architecture, Research in Architecture, Cities and Engineering Laboratory (RACE'LAB), Abderrahmane Mira University of Bejaia, Bejaia, Algeria
Sofiane Bounouni Department of Architecture, Research in Architecture, Cities and Engineering Laboratory (RACE'LAB), Abderrahmane Mira University of Bejaia, Bejaia, Algeria
Naas Alout Department of Civil Engineering, Laboratory of Civil Engineering and Sustainable Development, University of Djelfa, Djelfa, Algeria

Volume: 16 | Issue: 3 | Pages: 36928-36933 | June 2026 | https://doi.org/10.48084/etasr.18877

Received: 23 March 2026 | Revised: 18 April 2026 and 1 May 2026 | Accepted: 3 May 2026 | Online: 22 May 2026
Corresponding author: Tounsia Boudina

Abstract

The accurate estimation of earthquake-induced ground motion at a specific site is crucial for evaluating seismic hazards, including soil deformation, ground failure, and potential structural damage. This study investigates the seismic response of subsurface soil profiles in the Boumerdes region (Algeria) using numerical site response analysis. The assessment focuses on Peak Ground Acceleration (PGA) and response spectra while accounting for soil nonlinearity through both equivalent-linear and fully nonlinear approaches. The input motion corresponds to the ground excitation recorded during the Boumerdes earthquake of May 21, 2003. The results reveal significant variations in surface ground motion, characterized by amplification or attenuation relative to the bedrock input motion, highlighting the strong influence of local site effects. These findings contribute to a better understanding of seismic wave propagation in local soil conditions and provide a scientific basis for site-specific seismic microzonation of Boumerdes, supporting improved seismic risk mitigation and resilient urban planning in this seismically active region. These findings are also relevant to urbanized areas, where land-use choices require site-specific seismic information.

Keywords:

seismic site response, soil plasticity, amplification, seismic microzonation

References

A. Skoufezis and G. Manoukas, "Influence of vertical seismic component on the response of reinforced concrete regular planar frames," Soil Dynamics and Earthquake Engineering, vol. 165, Feb. 2023, Art. no. 107658.

R. Derghoum and I. Derghoum, "Nonlinear finite element analysis for seismic site amplification assessment of urban slopes showing surface geology and topography irregularities," Soil Dynamics and Earthquake Engineering, vol. 166, Mar. 2023, Art. no. 107729.

T. Boudina, S. Bounouni, and N. Allout, "A Comparative Analysis of Seismic Site Response in Time and Frequency Domains," Engineering, Technology & Applied Science Research, vol. 13, no. 2, pp. 10414–10418, Apr. 2023.

C. B. Nayak, "A state-of-the-art review of vertical ground motion (VGM) characteristics, effects and provisions," Innovative Infrastructure Solutions, vol. 6, no. 2, 2021, Art. no. 124.

J.-P. Bardet and T. Tobita, NERA: A Computer Program for Nonlinear Earthquake site Response Analyses of Layered Soil Deposits. University of Southern California, 2001.

D. Chen and S. Dai, "Dynamic fracture analysis of the soil-structure interaction system using the scaled boundary finite element method," Engineering Analysis with Boundary Elements, vol. 77, pp. 26–35, Apr. 2017.

M. Tallini et al., "Multi-methodological approach for assessing surface faulting and paleoliquefaction history in central Italy: applicative implications for seismic microzonation studies in the Quaternary L'Aquila basin," Frontiers in Earth Science, vol. 13, Apr. 2025.

A. Goretti, M. Faravelli, C. Casarotti, B. Borzi, and D. Quaroni, "A Web-GIS Platform for Real-Time Scenario-Based Seismic Risk Assessment at National Level," Geosciences, vol. 15, no. 10, 2025, Art. no. 385.

H. B. Seed and I. M. Idriss, "Soil Moduli and Damping Factors for Dynamic Response Analyses," Report no. EERC 70–10, Earthquake Engineering Resource Center, University of California, Berkley, California, 1970.

P. B. Schnabel, J. Lysmer, and H. B. Seed, "SHAKE: A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites," Report no. UCB/ EERC-72/12, University of California, Berkeley, CA, USA, 1970.

PLAXIS 2D: Reference Manual, Dublin, Ireland: Bentley Systems International Ltd.

R. Brinkgreve, W. Broere, and D. Waterman, Plaxis 2D - Version 8, Netherlands, 2004.

A. Amorosi, D. Boldini, and G. Elia, "Parametric study on seismic ground response by finite element modelling," Computers and Geotechnics, vol. 37, no. 4, pp. 515–528, June 2010.

Y. Chen et al., "Research on the Value of Rayleigh Damping Parameter in Explicit and Implicit Integrals for Dynamic Analysis of Large Structures," Buildings, vol. 14, no. 5, 2024, Art. no. 1286.

J. Lysmer and R. L. Kuhlemeyer, "Finite Dynamic Model for Infinite Media," Journal of the Engineering Mechanics Division, vol. 95, no. 4, pp. 859–877, Aug. 1969.

N. Allout, T.-H. Douara, S. Guettala, H. Charrak, and T. Boudina, "A Comparative Study of the Dam Stability at Various Stages using Numerical Modeling and in Situ Measurements: The Case Study of the Taksebt Dam, Tizi Ouzou, Algeria," Engineering, Technology & Applied Science Research, vol. 13, no. 2, pp. 10384–10388, Apr. 2023.

A. Meslem, F. Yamazaki, Y. Maruyama, D. Benouar, and N. Laouami, "Strong motion distribution and microtremor observation following the 21 May 2003 Boumerdes, Algeria earthquake," in Proceeding 14th World Conference on Earthquake Engineering, Beijing, China, Oct. 12–17, 2008.

M. Masina, R. Archetti, and A. Lamberti, "21 May 2003 Boumerdès Earthquake: Numerical Investigations of the Rupture Mechanism Effects on the Induced Tsunami and Its Impact in Harbors," Journal of Marine Science and Engineering, vol. 8, no. 11, 2020, Art. no. 933.

A. Meslem, F. Yamazaki, Y. Maruyama, D. Benouar, N. Laouami, and N. Benkaci, "Site-Response Characteristics Evaluated from Strong Motion Records of the 2003 Boumerdes, Algeria, Earthquake," Earthquake Spectra, vol. 26, no. 3, pp. 803–823, Aug. 2010.

N. Laouami, A. Slimani, Y. Bouhadad, J.-L. Chatelain, and A. Nour, "Evidence for fault-related directionality and localized site effects from strong motion recordings of the 2003 Boumerdes (Algeria) earthquake: Consequences on damage distribution and the Algerian seismic code," Soil Dynamics and Earthquake Engineering, vol. 26, no. 11, pp. 991–1003, Nov. 2006.