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| Titel |
Scaling properties of paleomagnetic reversal sequence |
| VerfasserIn |
S. S. Ivanov |
| 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 ; 3, no. 1 ; Nr. 3, no. 1, S.13-22 |
| Datensatznummer |
250000699
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| Publikation (Nr.) |
 copernicus.org/npg-3-13-1996.pdf |
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| Zusammenfassung |
| The history of reversals of main
geomagnetic field
during last 160 My is analyzed as a sequence of
events,
presented as a point set on the time axis.
Different
techniques were applied including the method of boxcounting,
dispersion counter-scaling, multifractal analysis
and
examination of attractor behaviour in
multidimensional phase
space. The existence of a crossover point at time
interval
0.5-1.0 My was clearly identified, dividing the
whole time
range into two subranges with different scaling
properties.
The long-term subrange is characterized by
monofractal
dimension 0.88 and by an attractor, whose
correlation
dimension converges to 1.0, that provides evidence
of a
deterministic dynamical system in this subrange,
similar to
most existing dynamo models. In the short-term
subrange the
fractal dimension estimated by different methods
varies from
0.47 to 0.88 and the dimensionality of the
attractor is
obtained to be about 3.7. These results are discussed
in terms
of non-linear superposition of processes in the
Earth's geospheres. |
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