Investigating the Relationship Between the Spacing of Plasma Bubble Sequences and the Dispersion of Atmospheric Gravity Waves Observed by FORMOSAT-7 IVM

This study utilizes FORMOSAT-7/COSMIC-2 Ion Velocity Meter (IVM) data to observe the spatiotemporal distribution of equatorial plasma bubbles (EPBs). By calculating the inter-bubble spacing within EPB sequences, we compare these spatial intervals with the locations of atmospheric gravity wave (AGW) sources. Due to the dispersive nature of AGWs, their horizontal wavelengths naturally increase as they propagate outward from the source region. Based on this mechanism, this study expects to observe a minimum EPB spacing centered around the AGW source, with the inter-bubble spacing gradually increasing in correlation with the distance from the source.