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Observation of non-Gaussianity and phase synchronization in intermittent magnetic field turbulence in the solar-terrestrial environment

Published online by Cambridge University Press:  26 February 2010

Rodrigo A. Miranda ,
Abraham C.-L. Chian ,
Sergio Dasso ,
Ezequiel Echer ,
Pablo R. Muñoz ,
Nalin B. Trivedi ,
Bruce T. Tsurutani  and
Michio Yamada
Rodrigo A. Miranda
Affiliation:
National Institute for Space Research (INPE), São José dos Campos-SP 12227-010, Brazil email: rmiranda@dge.inpe.br Research Institute for Mathematical Sciences (RIMS), Kyoto University, Kyoto 606-8502, Japan
Abraham C.-L. Chian
Affiliation:
National Institute for Space Research (INPE), São José dos Campos-SP 12227-010, Brazil email: rmiranda@dge.inpe.br Research Institute for Mathematical Sciences (RIMS), Kyoto University, Kyoto 606-8502, Japan
Sergio Dasso
Affiliation:
Institute of Astronomy and Space Sciences, CONICET-University of Buenos Aires, Buenos Aires, Argentina
Ezequiel Echer
Affiliation:
National Institute for Space Research (INPE), São José dos Campos-SP 12227-010, Brazil email: rmiranda@dge.inpe.br
Pablo R. Muñoz
Affiliation:
National Institute for Space Research (INPE), São José dos Campos-SP 12227-010, Brazil email: rmiranda@dge.inpe.br
Nalin B. Trivedi
Affiliation:
National Institute for Space Research (INPE), São José dos Campos-SP 12227-010, Brazil email: rmiranda@dge.inpe.br
Bruce T. Tsurutani
Affiliation:
Jet Propulsion Laboratory (JPL/NASA), California Institute of Technology, Pasadena, CA, USA
Michio Yamada
Affiliation:
Research Institute for Mathematical Sciences (RIMS), Kyoto University, Kyoto 606-8502, Japan
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Abstract

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We apply two nonlinear techniques, kurtosis and phase coherence index, to analyze magnetic field measurements from SOHO MDI solar images, ACE and Cluster data in the solar wind, and ground magnetometers in Brazil. We focus on two events: a non-ICME event in February 2002 and an ICME event in January 2005. Finite degree of non-Gaussianity and phase synchronization are observed in all datasets. The nonlinear response of the Earth's geomagnetic field to an ICME event in the solar wind is discussed.

Keywords

turbulenceSun: photospheresolar wind

References

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