Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 26, issue 10
Articles | Volume 26, issue 10
https://doi.org/10.5194/nhess-26-5281-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-5281-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 10
Research article
 | 
27 Oct 2026
Research article |  | 27 Oct 2026

Dependence of seismic hazard assessment on the observation time interval: insights from a synthetic earthquake catalogue in southeastern Spain

Elena Pascual-Sánchez, José Antonio Álvarez-Gómez, Julián García-Mayordomo, and Paula Herrero-Barbero

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Latest update: 27 Oct 2026
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Short summary
This study explores how the duration of seismic catalogues affects seismic hazard calculation. Using long-term multi-cycle earthquake simulations we show that different observation periods can produce significantly different hazard results. These findings provide new insights into the variability of seismic hazard and support the use of long-term simulations to include the less frequent large magnitude events. This is especially relevant in areas with low deformation rates such as SE Spain.
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