Local site effects at the selected stations affected by the February 6 2023 Türkiye Earthquake Sequences

İLHAN O., Indır O., MURATOĞLU G., İçen A., Albayrak K., SANDIKKAYA M. A., ...More

Soil Dynamics and Earthquake Engineering, vol.178, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 178
  • Publication Date: 2024
  • Doi Number: 10.1016/j.soildyn.2024.108454
  • Journal Name: Soil Dynamics and Earthquake Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Environment Index, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: One-dimensional site response analysis, Site amplification, Site effects, Turkey earthquakes
  • Hacettepe University Affiliated: Yes


This paper explores the applicability of one-dimensional (1D) nonlinear (NL) and equivalent-linear (EL) site response analyses (SRA) for characterizing site effects at selected strong ground motion stations impacted by the February 6, 2023 Türkiye earthquakes. The 1D NL simulations generally underestimate site response at softer sites and for long periods likely due to basin effects and the uncertainties associated with site properties and the 1D approximation. The inclusion of the high-frequency spectral decay parameter (κ0) in 1D simulations decreases the prediction bias of nonlinear SRA, especially at soft sites for short periods. Moreover, the theoretical transfer functions (TTFs) are demonstrated to capture the fundamental site period through in horizontal-to-spectral vertical ratio (HVSR) using ground motion data before and after the February 6, 2023 main event.