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Active fault databases: building a bridge between earthquake geologists and seismic hazard practitioners, the case of the QAFI v.3 database

AuthorsGarcía Mayordomo, Julián; Martín Banda, Raquel; Insúa Arévalo, Juan Miguel; Álvarez Gómez, José Antonio; Martínez-Díaz, J. J. CSIC ORCID ; Cabral, J.
almacenamiento datos
catástrofe natural
tratamiento datos
Península Ibérica
Issue Date30-Aug-2017
PublisherEuropean Geosciences Union
Copernicus Publications
CitationNatural Hazards and Earth System Sciences, vol.17, n.8, 1447–1459
AbstractActive fault databases are a very powerful and useful tool in seismic hazard assessment, particularly when singular faults are considered seismogenic sources. Active fault databases are also a very relevant source of information for earth scientists, earthquake engineers and even teachers or journalists. Hence, active fault databases should be updated and thoroughly reviewed on a regular basis in order to keep a standard quality and uniformed criteria. Desirably, active fault databases should somehow indicate the quality of the geological data and, particularly, the reliability attributed to crucial fault-seismic parameters, such as maximum magnitude and recurrence interval. In this paper we explain how we tackled these issues during the process of updating and reviewing the Quaternary Active Fault Database of Iberia (QAFI) to its current version 3. We devote particular attention to describing the scheme devised for classifying the quality and representativeness of the geological evidence of Quaternary activity and the accuracy of the slip rate estimation in the database. Subsequently, we use this information as input for a straightforward rating of the level of reliability of maximum magnitude and recurrence interval fault seismic parameters. We conclude that QAFI v.3 is a much better database than version 2 either for proper use in seismic hazard applications or as an informative source for non-specialized users. However, we already envision new improvements for a future update.
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