Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics
NPG
Articles | Volume 32, issue 4
Articles | Volume 32, issue 4
https://doi.org/10.5194/npg-32-489-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/npg-32-489-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 32, issue 4
Research article
 | 
05 Dec 2025
Research article |  | 05 Dec 2025

Nonlinear wavefield characteristics of seismic translation and rotation in small-strain deformation from moment tensor simulations

Wei Li, Yun Wang, Chang Chen, and Lixia Sun

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Latest update: 05 Sep 2026
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Short summary
This study uses numerical simulations to investigate geometric nonlinearity in six-component seismic motions. Our results reveal the characteristic of these nonlinear effects: while their pattern in body waves is universal, their excitation efficiency shows a strong source-type dependency. It demonstrates that rotational components are highly sensitive to effects driven by S-waves, and that surface waves may be the primary carriers of these features.
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