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

Date

2024-03-01

Author

İLHAN, OKAN
Indır, Onur
Muratoğlu, Gamze
İçen, Abdullah
Albayrak, Kubilay
SANDIKKAYA, MUSTAFA ABDULLAH
Askan Gündoğan, Ayşegül
Arduino, Pedro
Taciroğlu, Ertuğrul

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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.

Subject Keywords

One-dimensional site response analysis, Site amplification, Site effects, Turkey earthquakes

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85184499571&origin=inward
https://hdl.handle.net/11511/108676

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Department of Civil Engineering, Article