A statistical analysis of polarity reversals of the geomagnetic field

被引：26

作者：

Sorriso-Valvo, Luca

Stefani, Frank

Carbone, Vincenzo

Nigro, Giuseppina

Lepreti, Fabio

Vecchio, Antonio

Veltri, Pierluigi

机构：

[1] Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, CS, Italy

[2] INFM, CNR, LICRYL, I-87036 Arcavacata Di Rende, CS, Italy

[3] Forschungszentrum Rossendorf EV, D-01314 Dresden, Germany

[4] CNISM, Unita Cosenza, I-87036 Arcavacata Di Rende, CS, Italy

[5] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy

来源：

PHYSICS OF THE EARTH AND PLANETARY INTERIORS | 2007年 / 164卷 / 3-4期

关键词：

geomagnetism; paleomagnetic measurements; dynamo effect;

D O I：

10.1016/j.pepi.2007.07.001

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We investigate the temporal distribution of polarity reversals of the geomagnetic field. In spite of the common assumption that the reversal sequence can be modeled as a realization of a renewal Poisson process with a variable rate, we show that the polarity reversals strongly depart from a local Poisson statistics. The origin of this failure can be attributed to temporal clustering, thus suggesting the presence of long-range correlations in the underlying dynamo process. In this framework we compare our results with the behaviour of different models that describe the time evolution of the reversals. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：197 / 207

页数：11

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