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| Titel |
Synchronization and desynchronization in the Olami-Feder-Christensen earthquake model and potential implications for real seismicity |
| VerfasserIn |
S. Hergarten, R. Krenn |
| 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 ; 18, no. 5 ; Nr. 18, no. 5 (2011-09-27), S.635-642 |
| Datensatznummer |
250013971
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| Publikation (Nr.) |
 copernicus.org/npg-18-635-2011.pdf |
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| Zusammenfassung |
| The Olami-Feder-Christensen model is probably the most studied model in the context
of self-organized criticality and reproduces several statistical properties of real
earthquakes. We investigate and explain synchronization and desynchronization of
earthquakes in this model in the nonconservative regime
and its relevance for the power-law distribution of the event sizes
(Gutenberg-Richter law) and for temporal clustering of earthquakes. The power-law
distribution emerges from synchronization, and its scaling exponent can be derived
as τ = 1.775 from the scaling properties of the rupture areas' perimeter.
In contrast, the occurrence of foreshocks and aftershocks according to Omori's
law is closely related to desynchronization. This mechanism of foreshock and
aftershock generation differs strongly from the widespread idea of
spontaneous triggering and gives an idea why some even large earthquakes
are not preceded by any foreshocks in nature. |
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