# The complex dynamics of the 2023 Kahramanmaraş, Turkey, M w 7.8-7.7 earthquake doublet

“The complex dynamics of the 2023 Kahramanmaraş, Turkey, M w 7.8-7.7 earthquake doublet” (2023), by Zhe Jia et al. Earth and Planetary Sciences research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Zhe Jia, Zeyu Jin, Mathilde Marchandon, Thomas Ulrich, Alice‐Agnes Gabriel, Wenyuan Fan, Peter M. Shearer, Xiaoyu Zou, John Rekoske, Fatih Bulut et al.
- Published: August 3, 2023
- Field: Earth and Planetary Sciences
- DOI: https://doi.org/10.1126/science.adi0685
- Source: https://escholarship.org/uc/item/6mq8r1hs

## Abstract

The destructive 2023 moment magnitude ( M w ) 7.8-7.7 earthquake doublet ruptured multiple segments of the East Anatolian Fault system in Turkey. We integrated multiscale seismic and space-geodetic observations with multifault kinematic inversions and dynamic rupture modeling to unravel the events’ complex rupture history and stress-mediated fault interactions. Our analysis reveals three subshear slip episodes during the initial M w 7.8 earthquake with a delayed rupture initiation to the southwest. The M w 7.7 event occurred 9 hours later with a larger slip and supershear rupture on its western branch. Mechanically consistent dynamic models accounting for fault interactions can explain the unexpected rupture paths and require a heterogeneous background stress. Our results highlight the importance of combining near- and far-field observations with data-driven and physics-based models for seismic hazard assessment.

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