本研究利用福衛七號 (FORMOSAT-7/COSMIC-2) 中的離子速度儀 (Ion Velocity Meter, IVM) 所量測到的現地離子密度，來對電漿泡事件及大氣波動進行觀測。電漿泡主要 的發展機制是雷利-泰勒不穩定 (Rayleigh-Taylor instability)，又稱 RT 不穩定。而大氣 重力波常被視為觸發該不穩定的初始擾動源。因此利用福衛七號星系的特性，提供 了良好的空間分布和不易取得的現地觀測，來對電漿泡和大氣波動的關聯進行研究。 主要利用 IVM 所量測的的離子密度來對電漿泡進行觀測。本研究關注的時間是從入 夜後到日出前，當地時間 19 點到凌晨 4 點，這段時間做為主要觀測時間。設定相對 離子密度擾動閾值來識別將離子密度波動超過門檻的位置挑選出來，依照離子密度 下降的程度進行分組，來分成大尺度波結構 (Large-Scale Wave Structure, LSWS) 和電 漿泡 (Equatorial plasma bubbles, EPB)，並進行計算電漿泡和大尺度波結構彼此之間 的距離，最後得出電漿泡的間距中位數依照季節不同約 359-425 km，大尺度波結構 的間距中位數約 366-500 km，兩者在空間尺度上有相當程度的相似性。且在電漿泡 彼此之間的間距在經度分布上也可以觀察到在重力波熱點附近有出現距離中位數較 低的現象，在這裡可以觀察到重力波的色散現象。同時也利用了 LSWS 的發生率和 IRI 及 GIS 來計算預估 EPB 發生率，利用預估 EPB 發生率和觀測 EPB 發生率時空分 佈的相似，藉此來討論 LSWS 和 EPB 發生的關聯性。

This study utilizes high-density in-situ ion density data measured by the Ion Velocity Meter (IVM) onboard the FORMOSAT-7/COSMIC-2 constellation to investigate the connection between equatorial plasma bubbles (EPBs) and atmospheric waves. By establishing relative ion density perturbation thresholds, we categorized observed density depletions into Large-Scale Wave Structures (LSWS) and EPBs to calculate their spatial intervals during the nighttime window (19:00 to 04:00 Local Time). The analysis indicates that the median inter-bubble spacing varies between 359 and 425 km depending on the season, exhibiting a high degree of spatial scale similarity with the median spacing of LSWS (approximately 366-500 km). Furthermore, longitudinal distributions reveal that the median EPB spacing is significantly lower near atmospheric gravity wave (AGW) hotspots, a phenomenon highly consistent with the dispersion effect of outwardpropagating AGWs. Finally, by analyzing postmidnight EPBs during the solar minimum, this study effectively isolates and excludes the initial influence of the Pre-Reversal Enhancement (PRE). The results confirm that EPBs can still develop without the influence of the PRE, thereby providing direct observational evidence that LSWS serves asone of the critical seeding factors for EPB generation.

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