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| Titel |
Statistical distribution of elapsed times and distances of seismic events: the case of the Southern Spain seismic catalogue |
| VerfasserIn |
M. D. Martínez, X. Lana, A. M. Posadas, L. Pujades |
| 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. 2 ; Nr. 12, no. 2 (2005-02-08), S.235-244 |
| Datensatznummer |
250010486
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| Publikation (Nr.) |
 copernicus.org/npg-12-235-2005.pdf |
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| Zusammenfassung |
| Several empiric cumulative distributions of elapsed times and distances
between seismic events occurred in the Southern Iberian Peninsula from 1985
to 2000 (data extracted from the seismic catalogue of the Andalusian
Institute of Geophysics) are investigated. Elapsed times and distances
between consecutive seismic events of the whole catalogue, taking into
account threshold magnitudes of 2.5, 3.0, 3.5 and 4.0, and of five seismic
crises, without distinguishing magnitudes, are investigated. Additionally,
the series of distances and elapsed times from the main event to every
aftershock are also analysed for the five seismic crises. Even though a
power law is sometimes a satisfactory model for the cumulative distribution
of elapsed times and distances between seismic events, in some cases a fit
with a Weibull distribution for elapsed times performs better. It is worth
of mention that, in the case of the seismic crises, the fit achieved by the
power law is sometimes improved when it is combined with a logarithmic law.
The results derived might be a contribution to a better representation of
the seismic activity by means of models that could be based on random-walk
processes. |
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