Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3973

Authors: Barraclogh, D. R.*
De Santis, A.*
Title: Some possible evidence for a chaotic geomagnetic field from observational data
Title of journal: Physics of the Earth and Planetary Interiors
Series/Report no.: 3-4 / 99 (1997)
Publisher: Elsevier
Issue Date: Feb-1997
Keywords: geomagnetic field
chaos
non-linear forecasting approach
Abstract: The behaviour of the geomagnetic field as observed almost continuously at three European locations over the last 130 years is investigated by means of a non-linear forecasting approach. The analysis of the data in terms of first-differences (secular variation) of the horizontal magnetic components made in phase space with the simplex technique seems to exclude the pre-eminence of any stochastic or periodic behaviour. The dimensionality of the underlying non-linear process and the corresponding largest positive Lyapunov exponent are estimated. The results give some evidence that the geomagnetic field evolves as a non-linear chaotic system with unpredictable behaviour after times greater than a few years, confirming the common practice of updating global models of the geomagnetic field every 5 years.
Appears in Collections:04.01.03. Mantle and Core dynamics
04.05.02. Geomagnetic field variations and reversals
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
08061512320129178.pdf921.53 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA