Please use this identifier to cite or link to this item:
Authors: Consolini, G.* 
De Michelis, P.* 
Meloni, A.* 
Title: Multifractality and Punctuated Equilibrium in the Earth's Magnetic Field Polarity Reversals
Issue Date: 15-Jan-2000
Series/Report no.: 2 / 27 (2000)
Keywords: Magnetic field polarity reversals
Multifractal approach
Punctuated equilibrium
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals 
Abstract: The Earth's magnetic field has reversed its polarity hundreds of times in the Earth's history. This phenomenon is generally viewed as due to a Poisson nonstationary process. Here, the geomagnetic chron time length sequence for the past 166 Ma, is analyzed using a multifractal approach, based on "singularity analysis". The existence of a multifractal structure is the signature of the occurrence of "punctuated equilibrium", which can be read as an indication of a critical configuration of the geodynamo. The results obtained are compared with those from a prototypical model of a dynamical system, introduced by Seki & Ito [1993], and are discussed in the context of fluid motions within the Earth's outer liquid core.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
1999GL008390.pdf430.03 kBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 16, 2018


checked on Aug 16, 2018

Google ScholarTM