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| Titel |
Landslides, sandpiles, and self-organized criticality |
| VerfasserIn |
S. Hergarten |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 3, no. 6 ; Nr. 3, no. 6, S.505-514 |
| Datensatznummer |
250001307
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| Publikation (Nr.) |
 copernicus.org/nhess-3-505-2003.pdf |
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| Zusammenfassung |
| Power-law distributions of landslides
and rockfalls observed under various conditions suggest a relationship of
mass movements to self-organized criticality (SOC). The exponents of the
distributions show a considerable variability, but neither a unique
correlation to the geological or climatic situation nor to the triggering
mechanism has been found. Comparing the observed size distributions with
models of SOC may help to understand the origin of the variation in the
exponent and finally help to distinguish the governing components in
long-term landslide dynamics. However, the three most widespread SOC
models either overestimate the number of large events drastically or
cannot be consistently related to the physics of mass movements.
Introducing the process of time-dependent weakening on a long time scale
brings the results closer to the observed statistics, so that
time-dependent weakening may play a major part in the long-term dynamics
of mass movements. |
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