Group A, Poster #003, Seismology
High-Resolution Seismicity Imaging and Early Aftershock Migration of the 2023 Kahramanmaraş (SE Türkiye) Mw 7.9 & 7.8 Earthquake Doublet
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Poster Presentation
2023 SCEC Annual Meeting, Poster #003, SCEC Contribution #12792 VIEW PDF
led in a small-scale, such as subparallel subfaults, unmapped branches, and stepovers. The seismicity on EAF is shallow (<15 km) and concentrated in depth distribution, indicating a clear lock-creep transition. In contrast, the Sürgü Fault (SF) that is responsible for the second Mw 7.8 mainshock is shovel-shaped for the nucleation segment and has overall low dip angles (~40-80°). Aftershocks on the SF distribute in a broad range of depth, extending down to ~35 km. We also analyze the temporal behavior of seismicity, discovering no immediate foreshocks within ~5 days preceding the first mainshock, and no seismic activity on the SF before the second mainshock.
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