Jensen-Shannon Complexity and Permutation Entropy Analysis of Geomagnetic Auroral Currents

Tutkimustuotos: Lehtiartikkelivertaisarvioitu



  • Uppsala University
  • University of Michigan, Ann Arbor
  • University of Helsinki


In this study we determine whether auroral westward currents can be characterized by low-dimensional chaotic attractors through the use of the complexity-entropy methodology developed by Rosso et al. (2007, and based on the permutation entropy developed by Bandt and Pompe (2002, Our results indicate that geomagnetic auroral indices are indistinguishable from stochastic processes from time scales ranging from a few minutes to 10 hr and for embedded dimensions d < 8. Our results are inconsistent with earlier studies of Baker et al. (1990,, Pavlos et al. (1992), D. Roberts et al. (1991,, D. A. Roberts (1991,, and Vassiliadis et al. (1990,, 1991, indicating that auroral geomagnetic indices could be reduced to low-dimensional systems with chaotic dynamics.


JulkaisuJournal of geophysical research: Space physics
TilaSähköinen julkaisu (e-pub) ennen painettua julkistusta - 1 tammikuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 33458958