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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 30, issue 8
Ann. Geophys., 30, 1107–1112, 2012
https://doi.org/10.5194/angeo-30-1107-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 30, 1107–1112, 2012
https://doi.org/10.5194/angeo-30-1107-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 01 Aug 2012

Regular paper | 01 Aug 2012

Multifractal analysis of interplanetary magnetic field obtained during CME events

M. J. A. Bolzan1 and R. R. Rosa2 M. J. A. Bolzan and R. R. Rosa
  • 1Laboratório de Física, Universidade Federal de Goiás, Campus de Jataí, UFG, Brazil
  • 2Laboratório Associado de Computação e Matemática Aplicada, Instituto Nacional de Pesquisas Espaciais, INPE, Brazil

Abstract. In this paper, we have analyzed the interplanetary magnetic field (IMF) obtained by ACE satellite during the coronal mass ejection events. The characterization of the IMF fluctuations was performed using the singular power spectra deviations obtained from a wavelet transform modulus maxima (WTMM) approach. The results suggest the existence of different multifractal processes driving the intermittency during and after the CME events on the IMF time series. The characteristic time scales found, using the WTMM, and possible related physical mechanisms are discussed in the context of nonlinear interplanetary magnetic field response.

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