Multifractal modeling of magnetic storms via symbolic dynamics analysis

Details Multifractal modeling of magnetic storms via symbolic dynamics analysis Multifractal modeling of magnetic storms via symbolic dynamics analysis

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11008214w&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A8, CiteID A08214

Physics

Geophysics

14

Magnetospheric Physics: Ring Current, Magnetospheric Physics: Magnetic Storms And Substorms (7954), Mathematical Geophysics: Time Series Analysis (1872, 4277, 4475), Nonlinear Geophysics: Fractals And Multifractals

Scientific paper

Large-scale fluctuations of the H component magnetic field at Earth's equator during the period from 1981 to 2002 were examined using multifractal tools. We computed, analyzed, and modeled a measure representation of the Dst data. This representation can be viewed as a probability measure that characterizes the Dst series. The measure representation in fact gives the probabilities of specific strings of events in the complete Dst time series. The raw time series clearly shows intermittency and non-Gaussianity, which are reflective of large magnetic storms. The relevance of the multifractal analysis is that it suggests physical processes that may lead to this kind of data. The evidence we have found suggests that the ring current is always out of equilibrium and may undergo state changes via multiplicative cascades. We attempted to model the process using recurrent iterated function systems (RIFS). The RIFS model, in particular, provided an excellent fit to the Dst measure representation. Because of these results it can be concluded that multifractal RIFS models for the description of space weather will certainly play a greater role in the future.

Affiliated with

Also associated with

No associations

Rating

Multifractal modeling of magnetic storms via symbolic dynamics analysis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multifractal modeling of magnetic storms via symbolic dynamics analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifractal modeling of magnetic storms via symbolic dynamics analysis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-855910