Refining Seismogenic Source Models: Revisiting the Alboran Sea for an Updated Zesis Framework
Description:
The Iberian Peninsula's seismogenic source model (ZESIS), first published in 2015, has served as a cornerstone for seismic hazard assessment in the region, encompassing the peninsula and adjacent offshore areas (http://info.igme.es/zesis/). However, the past decade has seen significant advancements in geophysical data acquisition and seismic studies, providing crucial insights into the region's tectonic framework. These developments present an opportunity to refine the ZESIS model, particularly in the geologically complex Alboran Sea. The study here presented focuses on updating the seismogenic source zones within the Alboran Sea using an enhanced dataset and methodologies consistent with those employed in the original ZESIS framework. In addition to previously utilized datasets such as crustal thickness, heat flow, horizontal stress, and the Quaternary Active Faults Database of Iberia (QAFI), we integrate new resources including GNSS velocity fields, a revised earthquake catalog, detailed mappings of active faults, crustal domain boundaries, and newly constructed Moho depth map. These inputs enable a more precise delineation of seismogenic boundaries and a deeper understanding of the region's tectonic dynamics. The updated seismogenic zones in the Alboran Sea reveal significant changes, ranging from minor adjustments to the boundaries to major reconfigurations, reflecting the improved resolution and scope of the current dataset. This refined model not only enhances the accuracy of seismic hazard assessments for the Alboran Sea but also provides a robust foundation for future updates to the ZESIS model, ensuring its continued relevance and utility in seismic risk mitigation efforts.
Session: Testing, Testing 1 2 3: Appropriate Evaluation of New Seismic Hazard and Risk Models [Poster]
Type: Poster
Date: 4/15/2025
Presentation Time: 08:00 AM (local time)
Presenting Author: María José
Student Presenter: No
Invited Presentation:
Poster Number: 67
Authors
Hector Perea Corresponding Author hperea@icm.csic.es Spanish National Research Council - Institut de Ciencies del Mar |
María José Jiménez Presenting Author mj.jimenez@csic.es Spanish National Research Council, National Museum of Natural Sciences |
Mariano García-Fernández mgarcia@csic.es Spanish National Research Council, National Museum of Natural Sciences |
Julián García Mayordomo julian.garcia@igme.es Spanish National Research Council, Geological and Mining Institute of Spain |
Sara Martínez Loriente smartinez@icm.csic.es Spanish National Research Council - Institut de Ciencies del Mar |
Ariadna Canari acanari@icm.csic.es Spanish National Research Council - Institut de Ciencies del Mar |
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Refining Seismogenic Source Models: Revisiting the Alboran Sea for an Updated Zesis Framework
Session
Testing, Testing 1 2 3: Appropriate Evaluation of New Seismic Hazard and Risk Models