The present study aims to investigate the influence of the zonal wind velocity on equatorial plasma bubble (EPB) occurrences over Southeast Asia. The observation of the EPB occurrence is obtained from the GPS Rate of TEC change index. Meanwhile, the zonal winds were measured using a Fabry‐Perot interferometer located at Kototabang and Chiang Mai stations, and the height of F layer was acquired using an ionosonde at Chumphon station near the magnetic equator. This is the first study to report the influence of zonal wind velocity variation on EPB occurrences with the presence and absence of EPB using GPS data in the Southeast Asian sector. The results illustrated that the average magnitude of zonal wind velocity during the presence of EPB (78 ± 23 m/s) was higher than that of its absence (68 ± 21 m/s). It was observed using long‐term data analyses which led to in‐depth analyses. The analysis of temporal variation of zonal wind variation demonstrated that the zonal winds during EPB were higher in the evening compared to midnight and postmidnight periods from medium to high solar activities. The dependence of zonal wind velocity on EPB over local time was obtained based on the analysis which utilized the data collected during equinox in high solar activity. Besides that, a positive correlation was obtained between the zonal wind velocity and EPB occurrences during pre‐reversal enhancement (PRE) corroborated the effects of zonal wind influence on PRE, and thus EPB occurrences.

中文翻译：

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纬向风速变化对东南亚赤道等离子气泡发生的影响

本研究旨在调查纬向风速对东南亚赤道等离子泡（EPB）发生的影响。EPB发生的观察是从TEC的GPS速率变化指数获得的。同时，使用位于Kototabang和Chiang Mai站的Fabry-Perot干涉仪测量了纬向风，并使用位于磁赤道附近的Chumphon站的离子探空仪获得了F层的高度。这是第一项使用东南亚地区GPS数据报告存在和不存在EPB的地区风速变化对EPB发生的影响的研究。结果表明，在存在EPB时，纬向风速的平均幅度（78±23 m / s）高于没有EPB时的纬向风速（68±21 m / s）。使用长期数据分析可以观察到这一点，从而进行了深入分析。对纬向风变化的时间变化分析表明，从中到高太阳活动，EPB期间的纬向风晚于午夜和午夜后。基于分析，获得了纬向风速在当地时间上对EPB的依赖性，该分析利用了高太阳活动中春分期间收集的数据。除此之外，在逆转前增强（PRE）期间纬向风速与EPB的发生之间存在正相关关系，这证实了纬向风对PRE和EPB的影响。对纬向风变化的时间变化分析表明，从中到高太阳活动，EPB期间的纬向风晚于午夜和午夜后。基于分析，获得了纬向风速在当地时间上对EPB的依赖性，该分析利用了高太阳活动中春分期间收集的数据。除此之外，在逆转前增强（PRE）期间纬向风速与EPB的发生之间存在正相关关系，这证实了纬向风对PRE和EPB的影响。对纬向风变化的时间变化分析表明，从中到高太阳活动，EPB期间的纬向风晚于午夜和午夜后。基于分析，获得了纬向风速在当地时间上对EPB的依赖性，该分析利用了高太阳活动中春分期间收集的数据。除此之外，在逆转前增强（PRE）期间纬向风速与EPB的发生之间存在正相关关系，这证实了纬向风对PRE和EPB的影响。