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., Sandıkkaya M. A., ...Daha Fazla

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

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 178
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.soildyn.2024.108454
  • Dergi Adı: Soil Dynamics and Earthquake Engineering
  • Derginin Tarandığı İndeksler: 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
  • Anahtar Kelimeler: One-dimensional site response analysis, Site amplification, Site effects, Turkey earthquakes
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.