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Seismic versus aseismic slip for the 2023 Kahramanmaraş earthquake doublet

Author

Listed:
  • Rumeng Guo

    (Chinese Academy of Sciences
    Hubei Luojia Laboratory)

  • Xiongwei Tang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yijun Zhang

    (Chinese Academy of Sciences)

  • Wenting Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    China Earthquake Administration)

  • Ming Qin

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jianqiao Xu

    (Chinese Academy of Sciences)

  • Jiangcun Zhou

    (Chinese Academy of Sciences)

  • Xuhao Zou

    (China University of Geosciences
    Hubei Subsurface Multi-Scale Imaging Key Laboratory)

  • Heping Sun

    (Chinese Academy of Sciences
    Hubei Luojia Laboratory)

Abstract

Interplay between seismic and aseismic slip could shed light on the frictional properties and seismic potential of faults. The well-recorded 2023 Kahramanmaraş earthquake doublet provides an excellent opportunity to understand their partitioning on strike-slip faults. Here, we utilize InSAR and strong motion data to derive the coseismic rupture during the doublet, ~4-month postseismic afterslip, and slip distributions of two Mw>6.0 aftershocks. Our results show that afterslip appears to be complementary to coseismic slip and aftershocks, accounting for ~11.3% of the coseismic moment. Aftershocks mainly fall within the regions of positive Coulomb stresses caused by afterslip and follow a temporal decay similar to that of afterslip, indicating that aftershock production is the failure of small asperities loaded by the afterslip. The early postseismic afterslip is released ~93.7% aseismically and ~6.3% seismically by aftershocks. Our modeling results thus depict a complex fault system with highly variable slip patterns and stresses.

Suggested Citation

  • Rumeng Guo & Xiongwei Tang & Yijun Zhang & Wenting Zhang & Ming Qin & Jianqiao Xu & Jiangcun Zhou & Xuhao Zou & Heping Sun, 2025. "Seismic versus aseismic slip for the 2023 Kahramanmaraş earthquake doublet," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56350-7
    DOI: 10.1038/s41467-025-56350-7
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    References listed on IDEAS

    as
    1. Bin Zhao & Roland Bürgmann & Dongzhen Wang & Jian Zhang & Jiansheng Yu & Qi Li, 2022. "Aseismic slip and recent ruptures of persistent asperities along the Alaska-Aleutian subduction zone," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Marcos Moreno & Matthias Rosenau & Onno Oncken, 2010. "2010 Maule earthquake slip correlates with pre-seismic locking of Andean subduction zone," Nature, Nature, vol. 467(7312), pages 198-202, September.
    3. Hugo Perfettini & Jean-Philippe Avouac & Hernando Tavera & Andrew Kositsky & Jean-Mathieu Nocquet & Francis Bondoux & Mohamed Chlieh & Anthony Sladen & Laurence Audin & Daniel L. Farber & Pierre Soler, 2010. "Seismic and aseismic slip on the Central Peru megathrust," Nature, Nature, vol. 465(7294), pages 78-81, May.
    4. Chengli Liu & Thorne Lay & Rongjiang Wang & Tuncay Taymaz & Zujun Xie & Xiong Xiong & Tahir Serkan Irmak & Metin Kahraman & Ceyhun Erman, 2023. "Complex multi-fault rupture and triggering during the 2023 earthquake doublet in southeastern Türkiye," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
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