An investigation of the relationship between the CME and the Geomagnetic Storm

Abstract

The primary objective of this work is to look for any conceivable link between the geomagnetic storm and coronal mass ejection (CME) events. The relevant data for both CME and geomagnetic storm occurrences have been obtained from the Solar and Heliospheric Observatory mission’s LASCO and the NOAA Space Weather Prediction Center, respectively, for the same time span (February 1999 to December 2007). We performed Multivariate Singular Spectral Analysis (MSSA), Semblance Analysis, and Multifractal cross-correlation detrended fluctuation (MFXDFA) analysis to achieve our target. We also applied MSSA to investigate the causal link between the two data sets mentioned above. The analysis identifies the supportiveness factor between the data series and the possibility of a one-way statistical relationship between the data series is also verified. Then, Semblance and MFXDFA were used to detect the presence of any conceivable local phase relationship (time and frequency-dependent) and cross-correlation in the data sets. To make our analysis more persuasive, we must use all three methods. The Semblance analysis reveals positive and negative phase correlation between the signals under investigation at different time sub-intervals, whilst the MFXDFA validates the long-term power-law cross-correlations.