Source Geometry and Rupture Characteristics of the 20 February 2023 Mw 6.4 Hatay (Türkiye) Earthquake at Southwest Edge of the East Anatolian Fault       
Yazarlar (10)
Seda Yolsal Çevikbilen
İstanbul Teknik Üniversitesi, Türkiye
Tuncay Taymaz
İstanbul Teknik Üniversitesi, Türkiye
Tahir Serkan Irmak
Kocaeli Üniversitesi, Türkiye
Ceyhun Erman
İstanbul Teknik Üniversitesi, Türkiye
Metin Kahraman
İstanbul Teknik Üniversitesi, Türkiye
Berkan Özkan
İstanbul Teknik Üniversitesi, Türkiye
Tuna Eken
İstanbul Teknik Üniversitesi, Türkiye
Taylan Öcalan
Yıldız Teknik Üniversitesi, Türkiye
Dr. Öğr. Üyesi Ali Hasan DOĞAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Cemali Altuntaş
Yıldız Teknik Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Geochemistry Geophysics Geosystems
Dergi ISSN 1525-2027 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 10-2024
Cilt No 25
Sayı 10
DOI Numarası 10.1029/2023GC011353
Makale Linki http://dx.doi.org/10.1029/2023gc011353
Özet
Following the catastrophic 6 February 2023 Mw 7.8 and Mw 7.6 Kahramanmaraş earthquakes in the East Anatolian Fault Zone (EAFZ; southeast Türkiye), numerous aftershocks occurred along the major branches of this left-lateral shear zone. The spatio-temporal distribution of the earthquakes implied the stress-triggering effects of co-seismic ruptures on closely connected fault segments over large distances. On the 20 February 2023 two earthquakes with Mw 6.4 and Mw 5.2 struck Hatay (Türkiye) located near the Samandağ-Antakya segment of the EAFZ. To understand the rupture evolution of these earthquakes, we first re-located the aftershock sequence that occurred over a 3-month period in the Hatay-Syria region. A normal faulting mechanism with a significant amount of left-lateral strike-slip component at a shallow focal depth of 12 km was estimated for the 2023 Mw 6.4 earthquake from the inversion of seismological data. Our slip models describe a relatively simple and unilateral rupture propagation along about 36 km-long active segments of the EAFZ. The co-seismic horizontal displacements inferred from the Global Navigation Satellite System data are compatible with the oblique slip kinematics. Furthermore, we suggest that this earthquake did not produce notable tsunami waves on the adjacent coasts since the rupture plane did not extend to the seafloor of the Eastern Mediterranean with substantial amount of vertical displacement. We reckon that a future large earthquake (Mw ≥ 7.0) in the Hatay-Syria region where increased stress was transferred to the fault segments of the EAFZ and the Dead Sea Fault Zone (DSFZ) after the 2023 earthquakes will be a probable source of tsunami at the coastal plains of the Eastern Mediterranean Sea region.
Anahtar Kelimeler
East Anatolian Fault Zone | earthquake source parameters | active tectonics | kinematic slip inversion | space geodesy