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

MIRANDA, R.A.; CHIAN A.C.-L.; DASSO S.; ECHER E.; MUÑOZ P.R.; TRIVEDI N.B.; TSURUTANI B.T.; YAMADA M.

Solar and Stellar Variability: Impacto on Herat and Planets

IAU

Año: 2010; p. 363 - 368

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