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/2122/8893

Authors: Consolini, G.*
De Marco, R.*
De Michelis, P.*
Title: Intermittency and multifractional Brownian character of geomagnetic time series
Title of journal: Nonlinear Processes in Geophysics
Series/Report no.: / 20 (2013)
Publisher: Copernicus Publications
Issue Date: Jul-2013
DOI: 10.5194/npg-20-455-2013
Keywords: Solar terrestrial interaction
geomagnetic time series
multifractional nature
Abstract: The Earth's magnetosphere exhibits a complex behavior in response to the solar wind conditions. This behavior, which is described in terms of mutifractional Brownian motions, could be the consequence of the occurrence of dynamical phase transitions. On the other hand, it has been shown that the dynamics of the geomagnetic signals is also characterized by intermittency at the smallest temporal scales. Here, we focus on the existence of a possible relationship in the geomagnetic time series between the multifractional Brownian motion character and the occurrence of intermittency. In detail, we investigate the multifractional nature of two long time series of the horizontal intensity of the Earth's magnetic field as measured at L'Aquila Geomagnetic Observatory during two years (2001 and 2008), which correspond to different conditions of solar activity. We propose a possible double origin of the intermittent character of the small-scale magnetic field fluctuations, which is related to both the multifractional nature of the geomagnetic field and the intermittent character of the disturbance level. Our results suggest a more complex nature of the geomagnetic response to solar wind changes than previously thought.
Appears in Collections:05.07.01. Solar-terrestrial interaction
01.03.03. Magnetospheric physics
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
npg-2013a.pdf2.98 MBAdobe 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