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.
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.
the Creative Commons Attribution 4.0 License.
Unveiling tectonic deformation in El Salvador through GNSS and InSAR kinematic modelling
Juan Portela
Res. Gr. TERRA: Geomatics, Natural Hazards and Risks, ETSI Topografía, Geodesia y Cartografía, Universidad Politécnica de Madrid, Madrid, 28031, Spain
Instituto Geológico y Minero de España (IGME), CSIC, Madrid, 28003, Spain
Alejandra Staller
Res. Gr. TERRA: Geomatics, Natural Hazards and Risks, ETSI Topografía, Geodesia y Cartografía, Universidad Politécnica de Madrid, Madrid, 28031, Spain
Cécile Lasserre
LGL-TPE, UMR5276, Université Claude Bernard Lyon 1, ENS de Lyon, Université Jean Monnet, CNRS, Villeurbanne, 69622, France
Beatriz Cosenza-Muralles
Instituto de Investigación en Ciencias Físicas y Matemáticas, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, 01012, Guatemala
José Antonio Álvarez-Gómez
Department of Geodynamics, Stratigraphy and Paleontology, School of Geology, Complutense University of Madrid, Madrid, 28040, Spain
José Jesús Martínez-Díaz
Department of Geodynamics, Stratigraphy and Paleontology, School of Geology, Complutense University of Madrid, Madrid, 28040, Spain
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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.
We combined satellite radar and GPS data to model how the faults in El Salvador and nearby...