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Multipoint measurements as a test of the conjecture of avalanching and SOC in the dynamic magnetosphere.
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UNSPECIFIED (2000) Multipoint measurements as a test of the conjecture of avalanching and SOC in the dynamic magnetosphere. In: Cluster-II Workshop on Multiscale/Multipoint Plasma Measurements, SEP 22-24, 1999, IMPERIAL COLL, LONDON, ENGLAND.
Full text not available from this repository.Abstract
The power law dependence of the power spectrum of auroral indices, and in-situ magnetic field observations in the earth's geotail, may be evidence that "internally" the coupled solar wind-magnetospheric system exhibits scale free self organised criticality and can to some extent be described by avalanche models. In contrast, the intensity of, and time interval between the "external" behaviour; ie substorms, has well defined probability distributions with characteristic scales. We discuss results from a simple avalanche ("sandpile") model that exhibits regions of scale free behaviour in the statistics of internal events, but has a characteristic scale in systemwide (external) events. For this model in particular, and for avalanche models generally, a characteristic signature is that the internal avalanches are power law in their probability distributions of event sizes, durations and energy release; we also expect evidence of long range correlations in space and time. Multipoint in-situ measurements therefore could provide the key test of the conjecture of avalanching dynamics and SOC in the dynamic magnetosphere.
| Item Type: | Conference Item (UNSPECIFIED) |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Series Name: | ESA SPECIAL PUBLICATIONS |
| Journal or Publication Title: | CLUSTER-II WORKSHOP MULTISCALE/MULTIPOINT PLASMA MEASUREMENTS, PROCEEDINGS |
| Publisher: | EUROPEAN SPACE AGENCY |
| ISBN: | 92-9092-796-8 |
| ISSN: | 0379-6566 |
| Editor: | Harris, RA |
| Date: | 2000 |
| Volume: | 449 |
| Number of Pages: | 8 |
| Page Range: | pp. 269-276 |
| Publication Status: | Published |
| Title of Event: | Cluster-II Workshop on Multiscale/Multipoint Plasma Measurements |
| Location of Event: | IMPERIAL COLL, LONDON, ENGLAND |
| Date(s) of Event: | SEP 22-24, 1999 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/12672 |
Data sourced from Thomson Reuters' Web of Knowledge
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