Characterization of the co-seismic pattern and slip distribution of the February 06, 2023, Kahramanmaraş (Turkey) earthquakes (Mw 7.7 and Mw 7.6) with a dense GNSS network

Ali Özkan, Halil İbrahim Solak, İbrahim Tiryakioğlu, Murat Doruk Şentürk, Bahadır Aktuğ, Cemil Gezgin, Fatih Poyraz, Hüseyin Duman, Frédéric Masson, Göksu Uslular, Cemal Özer Yiğit, Hasan Hakan Yavaşoğlu*

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Özet

Two consecutive earthquakes with the magnitudes of Mw 7.7 and 7.6 (February 06, 2023) occurred on the East Anatolian Fault Zone (EAFZ) segments and unfortunately resulted in significant devastation to human life and cities in Turkey and Syria. In this study, we aimed to analyse the co-seismic displacements and fault slip distributions of these seismic events. Our unique high-spatial-resolution Global Navigation Satellite System (GNSS) network (comprising 73 permanent GNSS stations and 40 campaign observation sites), providing the recent geodetic dataset for the region, allows better constraint of the co-seismic surface displacements and slip distributions of both earthquakes. The three largest total displacements were identified as 466 cm, 362 cm, and 360 cm. The Fault interactions along the EAFZ were obvious during the consecutive earthquakes. The ruptures mainly occurred in the left-lateral components of the fault segments, with the maximum slips of 7.25 m and 9.43 m for the first event along the EAFZ and the second event on the Çardak Fault, respectively.

Orijinal dilİngilizce
Makale numarası230041
DergiTectonophysics
Hacim866
DOI'lar
Yayın durumuYayınlandı - 5 Kas 2023

Bibliyografik not

Publisher Copyright:
© 2023 Elsevier B.V.

Finansman

The authors would like to thank all participants who helped during the field studies. This article was supported financially by the Scientific and Technological Research Council of Turkey (TÜBİTAK) 1002-C Emergency Support Program for Field Study Focusing on Natural Disasters (project no. 123D005 ) and the Coordinator of Scientific Research Projects (BAP) of Istanbul Technical University (project no. MGA-2019-42243 ). We are much obliged to the Scientific and Technological Research Council of Turkey (TÜBİTAK), Disaster and Emergency Management Presidency (AFAD) and Adana-ASKİ for their support and providing archive GNSS data. The authors are grateful to anonymous reviewers for their helpful comments and valuable suggestions to improve the manuscript. The authors also thank Bünyamin Seven (Ülke Harita, Istanbul) for his support in data collection. For GPS data processing, the GAMIT/GLOBK software developed by Massachusetts Institute of Technology (MIT) was used ( Herring et al., 2015a, 2015b ). The GEODSUIT software was used for inverse modelling ( Aktuğ et al., 2010 ). The GMT software was used to plot maps in this study ( Wessel et al., 2013 ). The global dataset of active fault lines was obtained from the database of the GEM Global Active Faults project ( Styron and Pagani, 2020 ). The authors are grateful to the journal and publisher for the publication support of our article as part of the Commitment to Inclusion and Diversity.

FinansörlerFinansör numarası
Coordinator of Scientific Research Projects
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu123D005
Istanbul Teknik ÜniversitesiMGA-2019-42243
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi

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