Coseismic deformations from the Kahramanmaras earthquake sequence in Erzurum and seismic parameter analysis

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dc.authorid0000-0001-5286-0369
dc.authorid0000-0002-1361-0866
dc.authorid0000-0002-4954-7109
dc.authorid0000-0002-9067-2964
dc.authorid0000-0002-7759-1772
dc.authorid0000-0001-9926-0264
dc.contributor.authorSolak, Halil Ibrahim
dc.contributor.authorGezgin, Cemil
dc.contributor.authorKılınç, Ahmet Sami
dc.contributor.authorTiryakioğlu, İbrahim
dc.contributor.authorBaybura, Tamer
dc.contributor.authorAladoğan, Kayhan
dc.contributor.authorÇakanşimşek, Ece Bengünaz
dc.date.accessioned2025-09-23T05:31:45Z
dc.date.available2025-09-23T05:31:45Z
dc.date.issued2025
dc.departmentMühendislik Fakültesi
dc.description.abstractIn this study, a 17-station GNSS network established under project 22.FENBIL.30 was utilized to calculate the coseismic displacements in and around Erzurum, located along the Northeast Anatolian Fault Zone, following the 2023 Kahramanmarasearthquakes (Mw 7.7 Pazarc & imath;k and Mw 7.6 Ekinozu). The coordinates derived from GNSS measurements conducted in 2022 and 2023 were transformed to the earthquake epoch using interseismic and postseismic velocities from regional CORS-TR stations and TNFGN points. The results indicate that coseismic displacements due to the Kahramanmaras earthquakes in the vicinity of Erzurum range from 2.5 mm to 30 mm, with movement directed toward the southwest. These findings align with the rupture characteristics of the destructive left lateral strike-slip faults responsible for the earthquakes, as well as with the epicentral locations, focal mechanism solutions, and largescale studies in the literature. Additionally, to assess the current seismic hazard in Erzurum and its surroundings, the a and b parameters were calculated using the KRDAE earthquake catalog covering the period from 1900 to 2024. The study area was divided into three subregions, revealing varying levels of seismic activity and stress accumulation across different fault segments. The a parameter indicates high seismic activity in the northwestern part of Erzurum (a = 5.29) and moderate activity in the other regions. The b parameter suggests that small earthquakes occur more frequently west of Erzurum (b = 0.90), while larger earthquakes are more likely in the eastern section (b = 0.69), and a more balanced seismic hazard profile is observed in the southern part (b = 0.76). The results are consistent with the seismic activity of the region, demonstrating that the heterogeneous tectonic structures present a significant potential for large earthquakes. These findings provide a crucial foundation for future seismic hazard assessments in the region.
dc.identifier.doi10.29128/geomatik.1652700
dc.identifier.endpage392
dc.identifier.issn2564-6761
dc.identifier.issue3
dc.identifier.startpage375
dc.identifier.urihttps://doi.org/10.29128/geomatik.1652700
dc.identifier.urihttps://hdl.handle.net/20.500.12451/14513
dc.identifier.volume10
dc.identifier.wosWOS:001566476800006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.institutionauthorGezgin, Cemil
dc.institutionauthorid0000-0002-5951-0107
dc.language.isoen
dc.publisherGeomatik Journal
dc.relation.ispartofGeomatik
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectGNSS
dc.subjectKosismik Deformasyon
dc.subjectKahramanmaraş
dc.subjectKuzeydoğu Anadolu Fay
dc.subjectZonu (KDFZ)
dc.subjectTektonik
dc.subjectSismik Parametreler
dc.titleCoseismic deformations from the Kahramanmaras earthquake sequence in Erzurum and seismic parameter analysis
dc.typeArticle

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