Surface rupture during the 6th of February 2023 Mw 7.6 Elbistan-Ekinözü (Kahramanmaraş) earthquake: implications for fault rupture dynamics along the northern branch of East Anatolian Fault Zone

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dc.contributor.authorSofta, Mustafa
dc.contributor.authorKocbulut, Fikret
dc.contributor.authorAkgun, Elif
dc.contributor.authorAksoy, Ercan
dc.contributor.authorSozbilir, Hasan
dc.contributor.authorTatar, Orhan
dc.contributor.authorKarabacak, Volkan
dc.date.accessioned2024-10-26T18:10:51Z
dc.date.available2024-10-26T18:10:51Z
dc.date.issued2024
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractOn the 6th of February 2023, Mw 7.7 Pazarcik (Kahramanmaras) and Mw 7.6 Ekinozu (Kahramanmaras) earthquakes that occurred in Turkiye are devastating earthquake series that filled the existing seismic gaps on East Anatolian Fault Zone on the same day. The first Mw 7.7 earthquake caught most people in their sleep and 9 h later, a second one was triggered, ending up with more than 50k death toll, widespread damage to buildings, and massive landslides. This study presents the surface rupture geometry and coseismic displacement characteristics determined with field observations immediately after February 6, 2023, Ekinozu (Kahramanmaras, Turkiye) earthquake (Mw 7.6). Preliminary implications show that the total rupture length is 130 +/- 10 km on the cardak segment and Dogansehir segment, known as the northern branch of the East Anatolian Fault Zone. Left lateral strike-slip faulting is developed with a maximum horizontal displacement of 6.60 m and an average displacement of 3.00 m. Furthermore, the pitches of slip lines ranging from 0 degrees to 10 degrees were measured on the neoformed fault planes. In addition to that, surface rupture exhibits restraining bends and releasing bends structure at small scales on the cardak segment. From this point on, our preliminary results signify that cardak and Dogansehir segments were consecutively broken in Mw 7.6 Ekinozu (Kahramanmaras) earthquake that traced between Goksun and Nurhak region and from there reached the Eskikoy regions. Furthermore, potential stress may be concentrated on not only the Surgu segment which is on the transfer fault between the northern branch and the southern branch of East Anatolian Fault Zone but also the west of the cardak segment and the northeast of the Dogansehir segment near Yesilyurt (Malatya).
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBIdot;TAK)
dc.description.sponsorshipThis research is supported by the Scientific and Technological Research Council of Turkiye (TUBITAK) , 1002C-Natural Disasters Focused Fieldwork Emergency Support Program. The authors would particularly like to thank the Disaster and Emergency Management Authority of Turkiye (AFAD) and TUBITAK for kindly allowing their indispensable support in the field studies during this stressful period. The author also thanks the General Directorate of Mapping of Turkiye (GDM) for providing high-quality orthophoto images to scientists immediately after the earthquakes. More so, special thanks must go to Mustafa Yuecel who is the director of the Celikhan teachers' lodges at the Ministry of National Education of Turkiye , Celikhan- Ad & imath;yaman for accommodation even if it reached full capacity during this period. Lastly, the authors would like to thank the editors and three anonymous reviewers for their great improvements on the paper.
dc.identifier.doi10.55730/1300-0985.1895
dc.identifier.issn1300-0985
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85182686405
dc.identifier.scopusqualityQ2
dc.identifier.trdizinid1239986
dc.identifier.urihttps://doi.org/10.55730/1300-0985.1895
dc.identifier.urihttps://hdl.handle.net/20.500.12418/30408
dc.identifier.volume33
dc.identifier.wosWOS:001144013000002
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Earth Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectEast Anatolian Fault Zone
dc.subjectEkinozu (Kahramanmaras) earthquake
dc.subjectcardak Segment
dc.subjectDogansehir segment
dc.subjectsurface rupture
dc.titleSurface rupture during the 6th of February 2023 Mw 7.6 Elbistan-Ekinözü (Kahramanmaraş) earthquake: implications for fault rupture dynamics along the northern branch of East Anatolian Fault Zone
dc.typeArticle

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