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| Titel |
Fractal behaviour of the seismicity in the Southern Iberian Peninsula |
| VerfasserIn |
X. Lana, M. D. Martínez, A. M. Posadas, J. A. Canas |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 12, no. 3 ; Nr. 12, no. 3 (2005-02-25), S.353-361 |
| Datensatznummer |
250010591
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| Publikation (Nr.) |
 copernicus.org/npg-12-353-2005.pdf |
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| Zusammenfassung |
| The fractal behaviour of the seismicity in the Southern Iberian Peninsula is
analysed by considering two different series of data: the distance and the
elapsed time between consecutive seismic events recorded by the seismic
network of the Andalusian Institute of Geophysics (AIG). The fractal
analyses have been repeated by considering four threshold magnitudes of 2.5,
3.0, 3.5 and 4.0. The re-scaled analysis lets to determine if the seismicity
shows strong randomness or if it is characterised by time-persistence and
the cluster dimension indicates the degree of time and spatial clustering of
the seismicity. Another analysis, based on the reconstruction theorem,
permits to evaluate the minimum number of nonlinear equations describing the
dynamical mechanism of the seismicity, its "loss of memory", its chaotic
character and the instability of a possible predicting algorithm. The
results obtained depict some differences depending on distances or elapsed
times and the different threshold levels of magnitude also lead to slightly
different results. Additionally, only a part of the fractal tools, the
re-scaled analysis, have been applied to five seismic crises in the same
area. |
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