Sub- and super-shear ruptures during the 2023 Mw 7.8 and Mw 7.6 earthquake doublet in SE Türkiye     
Yazarlar (15)
Diego Melgar
Tuncay Taymaz
Türkiye
Athanassios Ganas
Brendan Crowell
Taylan Öcalan
Türkiye
Metin Kahraman
Türkiye
Varvara Tsironi
Seda Yolsal Çevikbilen
Türkiye
Sotiris Valkaniotis
Tahir Serkan Irmak
Türkiye
Tuna Eken
Türkiye
Ceyhun Erman
Türkiye
Berkan Özkan
Türkiye
Dr. Öğr. Üyesi Ali Hasan DOĞAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Cemali Altuntaş
Yıldız Teknik Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü Diğer hakemli uluslarası dergilerde yayınlanan tam makale
Dergi Adı Seismica
Dergi ISSN 2816-9387
Makale Dili İngilizce
Basım Tarihi 03-2023
Cilt No 2
Sayı 3
Sayfalar 1 / 10
DOI Numarası 10.26443/seismica.v2i3.387
Makale Linki http://dx.doi.org/10.26443/seismica.v2i3.387
Özet
An earthquake doublet (Mw 7.8 and Mw 7.6) occurred on the East Anatolian Fault Zone (EAFZ) on February 6th, 2023. The events produced significant ground motions and caused major impacts to life and infrastructure throughout SE Türkiye and NW Syria. Here we show the results of earthquake relocations of the first 11 days of aftershocks and rupture models for both events inferred from the kinematic inversion of HR-GNSS and strong motion data considering a multi-fault, 3D geometry. We find that the first event nucleated on a previously unmapped fault before transitioning to the East Anatolian Fault (EAF) rupturing for ~ 350 km and that the second event ruptured the Sürgü fault for ~ 160 km. Maximum rupture speeds were estimated to be 3.2 km/s for the Mw 7.8 event. For the Mw 7.6 earthquake, we find super-shear rupture at 4.8 km/s westward but sub-shear eastward rupture at 2.8 km/s. Peak slip for both events were as large as ~8m and ~6m, respectively.
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