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| Titel |
Self-organized criticality: Does it have anything to do with criticality and is it useful? |
| VerfasserIn |
D. L. Turcotte |
| 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 ; 8, no. 4/5 ; Nr. 8, no. 4/5, S.193-196 |
| Datensatznummer |
250005292
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| Publikation (Nr.) |
 copernicus.org/npg-8-193-2001.pdf |
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| Zusammenfassung |
| Three aspects of
complexity are fractals, chaos, and self-organized criticality. There are
many examples of the applicability of fractals in solid-earth geophysics,
such as earthquakes and landforms. Chaos is widely accepted as being
applicable to a variety of geophysical phenomena, for instance, tectonics
and mantle convection. Several simple cellular-automata models have been
said to exhibit self-organized criticality. Examples include the sandpile,
forest fire and slider-blocks models. It is believed that these are
directly applicable to landslides, actual forest fires, and earthquakes,
respectively. The slider-block model has been shown to clearly exhibit
deterministic chaos and fractal behaviour. The concept of self-similar
cascades can explain self-organized critical behaviour. This approach also
illustrates the similarities and differences with critical phenomena
through association with the site-percolation and diffusion-limited
aggregation models. |
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