Seismic Performance of the Kahramanmaraş Earthquakes: Ground Motion Prediction Models and the Role of Vertical Components

Year 2025, Volume: 14 Issue: 1, 610 - 632, 26.03.2025

Ömer Faruk Nemutlu , Ali Sarı

https://doi.org/10.17798/bitlisfen.1624925

Abstract

On February 6, 2023, two very large earthquakes occurred in Türkiye. These earthquakes occurred on the Eastern Anatolian Fault, one of the most active fault zones in Türkiye. After two earthquakes occurred 9 hours apart, with Pazarcık (7.7 Mw) and Elbistan (7.6 Mw) epicenters, 11 cities of the country were directly affected by the earthquake. In addition to a significant number of casualties, structural damage caused by the earthquake occurred. Ground motion prediction equations (GMPEs), in short, are used to estimate the impact/value that the acceleration/velocity/spectral parameters etc. of a wave moving from an earthquake source can create in a study area. With the help of these attenuation relations, various earthquake parameters can be estimated depending on distance. In this study, the peak ground acceleration (PGA) values obtained from the stations taking measurements during the Kahramanmaraş earthquakes were examined using 6 different attenuation relations valid for Türkiye. In the study, data from 105 different stations measured during the Kahramanmaraş earthquake were used. In addition, the vertical earthquake effect caused by the earthquake was evaluated in terms of Turkish seismic code conditions. Looking at the study results; The approach of ground classifications, the fact that the acceleration values of the Kahramanmaraş earthquake remained above the curves of the attenuation relations and the failure to consider different earthquake characteristics have shown that the current attenuation relations are weaknesses. It has been observed that earthquake data deviate in a certain distance region in all attenuation relations. The GMPEs generally did not show high agreement with the Kahramanmaraş earthquake data. For this reason, the situations that should be taken into consideration when preparing a new decay relationship are examined. Finally, it was concluded that the higher-than-expected vertical earthquake effects were not assessed correctly in the code and therefore the vertical acceleration spectra given in the code should be updated.

Keywords

GMPEs, Kahramanmaras Earthquakes, Seismic Codes, Vertical Earthquake Effect

Ethical Statement

The study is complied with research and publication ethics.

References

• E. Işık vd., “Structural damages in masonry buildings in Adıyaman during the Kahramanmaraş (Turkiye) earthquakes (Mw 7.7 and Mw 7.6) on 06 February 2023”, Engineering Failure Analysis, c. 151, sy May, 2023, doi: 10.1016/j.engfailanal.2023.107405.
• S. Öztürk, E. Altunsu, O. Güneş, ve A. Sarı, “Investigation of industrial structure performances in the Hatay and Gaziantep provinces during the Türkiye earthquakes on February 6, 2023”, Soil Dynamics and Earthquake Engineering, c. 179, s. 108569, Nis. 2024, doi: 10.1016/j.soildyn.2024.108569.
• O. İnce, “Structural damage assessment of reinforced concrete buildings in Adıyaman after Kahramanmaraş (Türkiye) Earthquakes on 6 February 2023”, Engineering Failure Analysis, c. 156, s. 107799, Şub. 2024, doi: 10.1016/j.engfailanal.2023.107799.
• V. Kahya vd., “Evaluation of earthquake-related damages on masonry structures due to the 6 February 2023 Kahramanmaraş-Türkiye earthquakes: A case study for Hatay Governorship Building”, Engineering Failure Analysis, c. 156, s. 107855, Şub. 2024, doi: 10.1016/j.engfailanal.2023.107855.
• E. Altunsu, O. Güneş, S. Öztürk, S. Sorosh, A. Sarı, ve S. T. Beeson, “Investigating the structural damage in Hatay province after Kahramanmaraş-Türkiye earthquake sequences”, Engineering Failure Analysis, c. 157, s. 107857, 2024, doi: https://doi.org/10.1016/j.engfailanal.2023.107857.
• AFAD, Türkiye Bina Deprem Yönetmeliği-2018(TBDY-2018). 2018.
• E. Damcı, R. Temür, Z. Kanbir, Ç. Şekerci, ve E. Öztorun Köroğlu, “Comprehensive investigation of damage due to 2023 Kahramanmaraş Earthquakes in Türkiye: Causes, consequences, and mitigation”, Journal of Building Engineering, c. 99, s. 111420, Nis. 2025, doi: 10.1016/j.jobe.2024.111420.
• M. Kutanis, “Si̇smi̇k Tehli̇ke Anali̇zi̇”, Sakarya Üniversitesi, 2003.
• B. Balun, O. F. Nemutlu, A. Benli, ve A. Sari, “Estimation of probabilistic hazard for Bingol province, Turkey”, Earthquakes and Structures, c. 18, sy 2, ss. 223-231, Şub. 2020, doi: 10.12989/EAS.2020.18.2.223.
• E. Işık, “Bitlis İlinin Depremselliği”, Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, c. 29, sy 3, ss. 267-273, 2013.
• E. Harman ve H. S. Küyük, “Sakarya ili için olasılığa dayalı sismik tehlike analizi Probabilistic seismic hazard analysis for the city of Sakarya”, 2016.
• Y. İnce, “Kahramanmaraş ve çevresinin Olasılıksal Sismik Tehlike Analizi”, Master’s, Sakarya Universitesi (Turkey), Turkey, 2016. [Çevrimiçi]. Erişim adresi: https://www.proquest.com/dissertations-theses/kahramanmaraş-ve-çevresinin-olasılıksal-sismik/docview/2700777760/se-2?accountid=62760
• H. Ulutaş, “Van İli̇ Si̇smi̇k Tehli̇ke Anali̇zi̇”, Master’s, Sakarya Universitesi (Turkey), Turkey, 2012. [Çevrimiçi]. Erişim adresi: https://www.proquest.com/dissertations-theses/van-i̇li̇-si̇smi̇k-tehli̇ke-anali̇zi̇/docview/2689296158/se-2?accountid=62760
• B. Shrestha, “Vertical Ground Motions and Its Effect on Engineering Structures: A State of the Art Review”, program adı: International Seminar on Hazard Management for Sustainable Development, Katmandu,Nepal, 2009, ss. 190-202.
• N. Newmark ve W. Hall, “Earthquake Spectra and Design”, EERI Monographs. 1982.
• F. Avcil vd., “Effects of the February 6, 2023, Kahramanmaraş earthquake on structures in Kahramanmaraş city”, Nat Hazards, c. 120, sy 3, ss. 2953-2991, Şub. 2024, doi: 10.1007/s11069-023-06314-1.
• Ö. F. Nemutlu, B. Balun, ve A. Sari, “Damage assessment of buildings after 24 January 2020 Elazig-Sivrice earthquake”, Earthquakes and Structures, c. 20, sy 3, ss. 325-335, Mar. 2021, doi: 10.12989/EAS.2021.20.3.325.
• E. Sayın vd., “24 January 2020 Sivrice-Elazığ, Turkey earthquake: geotechnical evaluation and performance of structures”, Bulletin of Earthquake Engineering, c. 19, sy 2, ss. 657-684, 2021, doi: 10.1007/s10518-020-01018-4.
• “Türkiye’deki depremler listesi”, Vikipedi. 08 Kasım 2024. Erişim: 20 Kasım 2024. [Çevrimiçi]. Erişim adresi: https://tr.wikipedia.org/w/index.php?title=T%C3%BCrkiye%27deki_depremler_listesi&oldid=34181847
• K. Gökkaya, “Geographic analysis of earthquake damage in Turkey between 1900 and 2012”, Geomatics, Natural Hazards and Risk, c. 7, Nis. 2016, doi: 10.1080/19475705.2016.1171259.
• U. Hancılar vd., “Strong Ground Motion and Building Damage Estimations Preliminary Report (v6)”, c. 2023, sy February. 2023.
• M. Abdelmeguid, C. Zhao, E. Yalcinkaya, G. Gazetas, A. Elbanna, ve A. Rosakis, “Dynamics of episodic supershear in the 2023 M7.8 Kahramanmaraş/Pazarcik earthquake, revealed by near-field records and computational modeling”, Commun Earth Environ, c. 4, sy 1, s. 456, Ara. 2023, doi: 10.1038/s43247-023-01131-7.
• Z. Wang, W. Zhang, T. Taymaz, Z. He, T. Xu, ve Z. Zhang, “Dynamic Rupture Process of the 2023 Mw 7.8 Kahramanmaraş Earthquake (SE Türkiye): Variable Rupture Speed and Implications for Seismic Hazard”, Geophysical Research Letters, c. 50, sy 15, s. e2023GL104787, Ağu. 2023, doi: 10.1029/2023GL104787.
• AFAD, “06 Şubat 2023 Pazarcık-Elbistan (Kahramanmaraş) Mw: 7.7 – Mw: 7.6 Depremleri Raporu”, AFAD, 2023.
• E. Hussain, S. Kalaycıoğlu, C. W. Milliner, ve Z. Çakir, “Preconditioning the 2023 Kahramanmaraş (Türkiye) earthquake disaster”, Nature Reviews Earth & Environment, c. 4, sy 5, ss. 287-289, 2023.
• Ö. F. Nemutlu, A. Sari, ve B. Balun, “06 Şubat 2023 Kahramanmaraş Depremlerinde (Mw 7.7-Mw 7.6) Meydana Gelen Gerçek Can Kayıpları Ve Yapısal Hasar Değerlerinin Tahmin Edilen Değerler İle Karşılaştırılması”, Afyon Kocatepe University Journal of Sciences and Engineering, c. 23, sy 5, ss. 1222-1234, Eki. 2023, doi: 10.35414/akufemubid.1302254.
• F. Akar, E. Işık, F. Avcil, A. Büyüksaraç, E. Arkan, ve R. İzol, “Geotechnical and Structural Damages Caused by the 2023 Kahramanmaraş Earthquakes in Gölbaşı (Adıyaman)”, Applied Sciences, c. 14, sy 5, s. 2165, Mar. 2024, doi: 10.3390/app14052165.
• Eurocode 8, Eurocode 8: Design of structures for earthquake resistance, 2005.
• Ö. F. Nemutlu, “R Değerleri ile PGA Değerleri Arasındaki Uyumun İncelenmesi: 6 Şubat 2023 Kahramanmaraş Depremleri”, program adı: Cumhuriyet 11th International Conference on Applied Sciences, Ankara: Academy Global Publishing House, Nis. 2024, ss. 19-28.
• N. A. Abrahamson, W. J. Silva, ve R. Kamai, “Summary of the ASK14 ground motion relation for active crustal regions”, Earthquake Spectra, c. 30, sy 3, ss. 1025-1055, 2014, doi: 10.1193/070913EQS198M.
• S. Akkar ve Z. Çaǧnan, “A local ground-motion predictive model for Turkey, and its comparison with other regional and global ground-motion models”, Bulletin of the Seismological Society of America, c. 100, sy 6, ss. 2978-2995, 2010, doi: 10.1785/0120090367.
• S. Akkar ve J. J. Bommer, “Empirical equations for the prediction of PGA, PGV, and spectral accelerations in Europe, the mediterranean region, and the Middle East”, Seismological Research Letters, c. 81, sy 2, ss. 195-206, 2010, doi: 10.1785/gssrl.81.2.195.
• E. Kalkan ve P. Gülkan, “Site-dependent spectra derived from ground motion records in Turkey”, Earthquake Spectra, c. 20, sy 4, ss. 1111-1138, 2004, doi: 10.1193/1.1812555.
• A. Sarı, “Energy Considerations in Ground Motion Attenuation and Probabilistic Seismic Hazard Studies”, 2003.
• R. Ulusay, E. Tuncay, H. Sonmez, ve C. Gokceoglu, “An attenuation relationship based on Turkish strong motion data and iso-acceleration map of Turkey”, Engineering Geology, c. 74, sy 3-4, ss. 265-291, 2004, doi: 10.1016/j.enggeo.2004.04.002.
• N. Gregor vd., “Comparison of NGA-West2 GMPEs”, Earthquake Spectra, c. 30, sy 3, ss. 1179-1197, 2014, doi: 10.1193/070113EQS186M.
• PEER, “Pacific Engineering Research Center Strong Ground Motion Database”. 2021. [Çevrimiçi]. Erişim adresi: http://ngawest2.berkeley.edu
• W. B. Joyner ve D. M. Boore, “Peak horizontal acceleration and velocity from strong-motion records including records from the 1979 Imperial Valley, California, earthquake”, Bulletin of the seismological Society of America, c. 71, sy 6, ss. 2011-2038, 1981.
• Ö. F. Nemutlu ve B. Balun, “Evaluation of November 23, 2022, Duzce Earthquake data with Ground Motion Prediction Equations”, Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, c. 12, sy 4, ss. 1248-1260, Ara. 2023, doi: 10.17798/bitlisfen.1376430.