Unveiling tectonic deformation in El Salvador through GNSS and InSAR kinematic modelling

Portela, Juan; Béjar-Pizarro, Marta; Staller, Alejandra; Lasserre, Cécile; Cosenza-Muralles, Beatriz; Álvarez-Gómez, José Antonio; Martínez-Díaz, José Jesús

doi:10.5194/se-17-369-2026

Articles | Volume 17, issue 2

https://doi.org/10.5194/se-17-369-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-17-369-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 2

Research article

|

03 Mar 2026

Research article |

| 03 Mar 2026

Unveiling tectonic deformation in El Salvador through GNSS and InSAR kinematic modelling

Juan Portela, Marta Béjar-Pizarro, Alejandra Staller, Cécile Lasserre, Beatriz Cosenza-Muralles, José Antonio Álvarez-Gómez, and José Jesús Martínez-Díaz

Supplement

https://doi.org/10.5194/se-17-369-2026-supplement

Model code and software

StrainTool: A software package to estimate strain tensor parameters D. G. Anastasiou et al. https://doi.org/10.5281/zenodo.13142493

Short summary

We combined satellite radar and GPS data to model how the faults in El Salvador and nearby regions accumulate deformation. Motion across the central El Salvador Fault Zone is shared by several fault branches, while the offshore subduction zone appears to be weakly locked. These results improve the understanding of regional deformation and seismic hazard in Central America.