Solid Earth
Solid Earth
SE
Articles | Volume 17, issue 2
Articles | Volume 17, issue 2
https://doi.org/10.5194/se-17-311-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-17-311-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 2
Research article
 | 
24 Feb 2026
Research article |  | 24 Feb 2026

The role of fault network geometry on the complexity of seismic cycles in the Apennines

Constanza Rodriguez Piceda, Zoë K. Mildon, Billy J. Andrews, Yifan Yin, Jean-Paul Ampuero, Martijn van den Ende, Claudia Sgambato, and Percy Galvez

Data sets

Supplementary information 3D seismic cycle models of the Italian Apennines (Version 2) C. Rodriguez Piceda et al. https://doi.org/10.5281/zenodo.18339858

Model code and software

qdyn_hmat_lsoda: QDYN earthquake simulator with Hierarchical matrices and LSODA solver C. Rodriguez Piceda et al. https://doi.org/10.5281/zenodo.17178002

QDYN: a Quasi-DYNamic earthquake simulator (v1.1) (qdyn_1.1) Yingdi Luo et al. https://doi.org/10.5281/zenodo.322459

Video supplement

Supplementary information 3D seismic cycle models of the Italian Apennines (Version 2) C. Rodriguez Piceda et al. https://doi.org/10.5281/zenodo.18339858

Download
Short summary
We investigate how the spatial arrangement of normal faults in the Italian Apennines affects earthquake timing and size. Computer-based models show that wide networks with faults offset across-strike produce more irregular and variable earthquakes, while narrow networks with fewer across-strike faults lead to more regular events. Faster-moving faults are more sensitive to nearby positive stress interactions, highlighting the need to consider fault geometry in seismic hazard assessments.
Read more
Share