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Journals / Sinop Üniversitesi Fen Bilimleri Dergisi / 2026 / Cilt: 11 Sayı: 1

Site Effect Observations from the Kahramanmaraş Earthquakes

Kahramanmaraş Depremlerinde Saha Etkisi Gözlemleri

Yusuf Guzel(NECMETTİN ERBAKAN ÜNİVERSİTESİ, MÜHENDİSLİK VE MİMARLIK FAKÜLTESİ)0000-0003-2957-8060
Pages
89–111
Publication Date
2026-06-26
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Lastly, the performance of the equivalent linear approach in site response prediction is evaluated by simulating one of the soft soil sites.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Characteristics of earthquake input motions are subjected to change when they travel through soil deposits to ground surfaces.
📊
Key Findings & Data:The influence of the soil deposits on the input motions is known as site effect, which has long been included in modern seismic design codes (e.g., EC8, ASCE 7 and TBEC).
💡
Conclusion & Impact:Lastly, the performance of the equivalent linear approach in site response prediction is evaluated by simulating one of the soft soil sites.
🔬Design:Araştırma Makalesi
📍Scope:2023 Verileri
⚙️Variables:Kahramanmaraş depremleri · saha etkisi · maksimum yer ivmesi

Abstract

Characteristics of earthquake input motions are subjected to change when they travel through soil deposits to ground surfaces. The influence of the soil deposits on the input motions is known as site effect, which has long been included in modern seismic design codes (e.g., EC8, ASCE 7 and TBEC). In this study, the site effect is investigated through the recorded input motions of two main Kahramanmaras earthquake events that happened on February 6, 2023. The recorded input motions at seven earthquake stations within and around Kahramanmaras City are considered. The effect of site conditions on the bracketed duration and peak ground acceleration values is discussed. In addition, damaged buildings at different soil conditions close to the earthquake stations are discussed. Lastly, the performance of the equivalent linear approach in site response prediction is evaluated by simulating one of the soft soil sites.

Özet

Characteristics of earthquake input motions are subjected to change when they travel through soil deposits towards ground surfaces. The influence of the soil deposits on the input motions is known as site effect, which has long been included in modern seismic design codes (e.g., EC8, ASCE 7 and TBDY). In this study, the site effect is investigated through the recorded input motions of two main Kahramanmaraş earthquake events that happened on February 6, 2023. The recorded input motions at seven earthquake stations in and around Kahramanmaraş City are considered. The effect of site conditions on the bracketed duration, peak ground acceleration values and spectral acceleration curves is discussed. In addition, damaged buildings at different soil conditions close to the earthquake stations are discussed. The PGA values at stations located on soil class C (with Vs, 30 of 280 m/s and 346 m/s) are greater than those recorded on soil class B (Vs, 30 ranging from 484 m/s to 715 m/s). Similarly, bracketed duration increases with the recording site getting relatively softer. Lastly, the spectral peaks occurring around the fundamental period of a soft soil site result in an increase in the seismic demand of buildings.

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Cite This Article

Guzel, Y. (2026). Site Effect Observations from the Kahramanmaraş Earthquakes. Sinop Üniversitesi Fen Bilimleri Dergisi, Cilt: 11 Sayı: 1, 89–111. https://doi.org/10.33484/sinopfbd.1548062

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