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Entropy 2015, 17(7), 5000-5021; doi:10.3390/e17075000

A Novel Method for Seismogenic Zoning Based on Triclustering: Application to the Iberian Peninsula

1
Department of Computer Science, Pablo de Olavide University of Seville, Seville, 41013, Spain
2
Department of Computer Science, University of Seville, Seville, 41012, Spain
3
Department of Building Structures and Geotechnical Engineering, University of Seville, Seville 41012, Spain
4
TGT-NT2 Labs, Santiago de Chile, 7820090, Chile
5
Department of Graphics Engineering, University of Seville, Seville, 41012, Spain
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Raúl Alcaraz Martínez
Received: 23 June 2015 / Revised: 3 July 2015 / Accepted: 5 July 2015 / Published: 16 July 2015
(This article belongs to the Section Information Theory)
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Abstract

A previous definition of seismogenic zones is required to do a probabilistic seismic hazard analysis for areas of spread and low seismic activity. Traditional zoning methods are based on the available seismic catalog and the geological structures. It is admitted that thermal and resistant parameters of the crust provide better criteria for zoning. Nonetheless, the working out of the rheological profiles causes a great uncertainty. This has generated inconsistencies, as different zones have been proposed for the same area. A new method for seismogenic zoning by means of triclustering is proposed in this research. The main advantage is that it is solely based on seismic data. Almost no human decision is made, and therefore, the method is nearly non-biased. To assess its performance, the method has been applied to the Iberian Peninsula, which is characterized by the occurrence of small to moderate magnitude earthquakes. The catalog of the National Geographic Institute of Spain has been used. The output map is checked for validity with the geology. Moreover, a geographic information system has been used for two purposes. First, the obtained zones have been depicted within it. Second, the data have been used to calculate the seismic parameters (b-value, annual rate). Finally, the results have been compared to Kohonen’s self-organizing maps. View Full-Text
Keywords: triclustering; seismic zoning; self-organizing maps; Iberian Peninsula triclustering; seismic zoning; self-organizing maps; Iberian Peninsula
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Martínez-Álvarez, F.; Gutiérrez-Avilés, D.; Morales-Esteban, A.; Reyes, J.; Amaro-Mellado, J.L.; Rubio-Escudero, C. A Novel Method for Seismogenic Zoning Based on Triclustering: Application to the Iberian Peninsula. Entropy 2015, 17, 5000-5021.

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