LEE- Jeodinamik-Yüksek Lisans

Bu koleksiyon için kalıcı URI

http://hdl.handle.net/11527/19320

Gözat

Yazar "Baka, Çağdaş Mert" ile LEE- Jeodinamik-Yüksek Lisans'a göz atma
  • Öge
    High resolution coseismic surface displacement measurements between Çiğli and Hassa along the surface rupture of february 6, 2023 Pazarcık Earthquake
    (ITU Graduate School, 2025-06-18) Baka, Çağdaş Mert ; Yıldırım, Cengiz ; 501211040 ; Geodynamics
    The subject of this study is the first of the 6 February 2023 Kahramanmaraş Earthquake Doublet (Mw:7.7 and Mw: 7.6), Pazarcık Earhquake, that deeply affected Türkiye. After earthquake occured, studies related to satellite based geodetic data and remote sensing data conducted to reveal surface ruptures and slip distribution of these earthquake doublet. Although such studies contribute to bulk deformation analysis, comprehensive field investigations that determine and quantify the coseismic deformation, fault geometry relationships and discrete deformation analysis from offset features are still lacking. Istanbul Technical University, EarthBeeLab carried out a field campaign to produce high-resolution (<5 cm) UAS imagery with 300m width throughout the 510 km long surface rupture. The principal goal of this study is to provide a detailed pattern of the fault strands along the rupture, co-seismic slip distribution and deformation zone width variations along the surface rupture. Approximately 80 km length of the surface rupture from Hassa to Çiğli were mapped by using the mentioned UAS imagery dataset. The rupture then divided into five sections according to changes in geometry along the rupture: İslahiye, Beyoğlu, Türkoğlu, Küpelikız and Kapıçam from south to north. Deformation zone widths of the rupture were also measured and the results ranges from a few meters up to 1051m. According to measurements, narrow and concentrated sections are Kapıçam, Beyoğlu and Türkoğlu Sections while more distributed sections are observed as İslahiye and Küpelikız Sections. The jog areas where section geometries change represent the widest deformation zones along the fault. Displacements were categorized as ''On Fault'' for those occurring along the main fault and ''Off Fault'' for more than 10 meters from the main fault to show how much of strain is distributed within the deformation zone. After a detailed study over 1419 coseismic displacement measurements (1233 On Fault and 186 Off Fault), highest slip was identified as of 7.9 ± 0.3 m in Kapıçam Section and overall average value of the offset measurements was 2.18 ± 0.30 m. Based on the results of previous studies, maximum coseismic displacement value was obtained as 7.3 ± 0.2 m at Büyüknacar Area (25 km north of the Çiğli), which is smaller than our result. In the study area, Kapıçam Section and Beyoğlu-Türkoğlu transition exhibited the highest concentration and magnitude of displacements among the fault segments.