Published in

American Physical Society, Physical Review Letters, 12(96)

DOI: 10.1103/physrevlett.96.128501

Links

Tools

Export citation

Search in Google Scholar

Clustering of Polarity Reversals of the Geomagnetic Field

Journal article published in 2006 by V. Carbone ORCID, L. Sorriso Valvo ORCID, A. Vecchio ORCID, F. Lepreti, P. Veltri, P. Harabaglia, I. Guerra
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

Often in nature the temporal distribution of inhomogeneous stochastic point processes can be modeled as a realization of renewal Poisson processes with a variable rate. Here we investigate one of the classical examples, namely, the temporal distribution of polarity reversals of the geomagnetic field. In spite of the commonly used underlying hypothesis, we show that this process strongly departs from a Poisson statistics, the origin of this failure stemming from the presence of temporal clustering. We find that a Lévy statistics is able to reproduce paleomagnetic data, thus suggesting the presence of long-range correlations in the underlying dynamo process.