Simulation of geomagnetic polarity reversals by a model of interacting dipole sources

Details Simulation of geomagnetic polarity reversals by a model of interacting dipole sources Simulation of geomagnetic polarity reversals by a model of interacting dipole sources

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..92..299m&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 92, no. 3-4, April 1989, p. 299-306. Research supported by CEA and CN

Computer Science

8

Dynamo Theory, Geomagnetism, Magnetic Poles, Monte Carlo Method, Paleomagnetism, Polarity

Scientific paper

A simple model is described, derived from Parker's (1969) dynamo theory. The field source consists of N interacting point dipoles, characterized by a finite lifetime. A Monte Carlo process gives the temporal evolution for the system. When the number of dipoles is of the order of the elementary cells present in Parker's theory, for a wide range of coupling parameters between the dipoles the thermodynamic fluctuations may generate excursions and polarity reversals, whose morphology and temporal distribution may be compared with those observed for the geomagnetic field.

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