| Multi-Point Analysis of Pi2 event Using Space and Ground-Based data by Advanced Signal Processing Techniques |
| Paper ID : 1038-ISCH |
| Authors |
|
Islam Mustafa Hawash * National Research Institute of Astronomy and Geophysics |
| Abstract |
| We present a comprehensive study of Pi2 geomagnetic Ultra-Low Frequency (ULF) waves through integrated analysis of data from the Van Allen Probes (VAP-A and VAP-B), ERG (Arase) satellite, and multiple ground-based magnetometer stations. Employing advanced signal processing methods such as Empirical Mode Decomposition and cross-wavelet transform, we investigate the spatial-temporal characteristics and source mechanisms of Pi2 events under varying geomagnetic conditions. Our analysis incorporates additional datasets from the other missions and radars network, providing a multi-faceted perspective on magnetosphere-ionosphere coupling processes. Statistical assessments reveal significant correlations between Pi2 properties and solar wind parameters, while case studies elucidate the role of plasma sheet dynamics in Pi2 generation. The findings contribute to a deeper understanding of magnetospheric dynamics and have implications for space weather modeling and prediction. This multi-instrument approach will allow us to examine the coherence and phase relationships between space-based and ground-based observations, providing a more detailed picture of Pi2 pulsations’ propagation and source mechanisms. We will also explore the impact of different geomagnetic conditions on Pi2 characteristics by analyzing events during quiet and disturbed periods. This study will contribute to the understanding of Pi2 pulsations and their role in magnetospheric processes. |
| Keywords |
| Pi2 pulsations, Van Allen Probes, ERG satellite, Kakioka, wavelet analysis, geomagnetic conditions. |
| Status: Abstract Accepted (Oral Presentation) |