  Interplanetary coronal mass ejections (ICMEs) can reach the Earth's
magnetosphere causing magnetic disturbances. It can be measured by satellite
and ground-based magnetometers. Data from the ACE satellite and from the
geomagnetic field was explored here via discrete wavelet transform (DWT). The
increase of wavelet coefficient amplitudes of the solar wind parameters and
geomagnetic field data analysis are well-correlated with the arrival of the
shock and sheath region. As an auxiliary tool to verify the disturbed magnetic
fields identified by the DWT, we developed a new approach called effectiveness
wavelet coefficient (EWC) methodology. The first interpretation of the results
suggests that DWT and EWC can be effectively used to characterize the
fluctuations on the solar wind parameters and its contributions to the
geomagnetic field. Further, these techniques could be implemented to real-time
analysis for forecast space weather scenarios.
