The sun provides an explosive, heavenly example of self-organized criticality. Sudden bursts of intense radiation emanate from rapid rearrangements of the magnetic ΓΏeld network in the corona. Avalanches are triggered by loops of ux that reconnect or snap into lower-energy conΓΏgurations when they are
Self-organized criticality due to a separation of energy scales
β Scribed by Barbara Drossel
- Book ID
- 104341483
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 594 KB
- Volume
- 236
- Category
- Article
- ISSN
- 0378-4371
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β¦ Synopsis
Certain systems with slow driving and avalanche-like dissipation events are naturally close to a critical point when the ratio of two energy scales is large. The first energy scale is the threshold above which an avalanche is triggered, the second scale is the threshold above which a site is affected by an avalanche. Results of computer simulations, and a mean-field theory are presented.
π SIMILAR VOLUMES
In order to predict the effect of small-scale interfacial debonding on the energy release rate at a crack tip for mode I fracture of a fibre with a cracked coating layer, an approximate calculation method has been presented. The relation of debonding length, thickness of the coating layer and ratio