A statistical analysis of reversal sequences: geomagnetic field, coupled spin and numerical dynamo models

Details A statistical analysis of reversal sequences: geomagnetic field, coupled spin and numerical dynamo models A statistical analysis of reversal sequences: geomagnetic field, coupled spin and numerical dynamo models

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..794m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.794

Statistics

Scientific paper

We investigate the temporal occurrence of polarity reversals of the Earth's magnetic field. We show that this process departs from a Poisson statistics with a time dependent rate of occurrence and also self-affinity of the reconstructed polarity sequence is detected. The same statistical behaviour is obtained for the reversal sequence generated by a coupled spin model for the geodynamo. Our future work consists in the use of other statistical and fractal techniques to clarify the presence of long-range correlations and in a comparison of these results with data from 3D numerical dynamos.

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