Diverse studies about equatorial plasma bubble structures and their relation with ionospheric scintillation have been performed in the last decades. Among many findings, the investigations usually reported dominant plasma bubble eastward velocity with a magnitude of few tens of m/s and larger amplitude scintillation for transionospheric signals aligned with these depleted structures. However, an uncommon long-lasting event with negligible average zonal drift prevailing for hundreds of minutes was registered over the Brazilian region, allowing a case study of the scintillation pattern under this particular condition. Data from ionosondes, all-sky imager (6300 Å filter), geostationary satellites and Global Navigation Satellite System were used here, covering the eastern portion of the Brazilian ionosphere. The results show that the scintillation was less intense than in other nights around the event, suggesting that larger plasma density gradients and sequential bubble structures seem to cause more severe scintillation scenario than the alignment condition alone, even though the last also contributes to worsen the scintillation effects. Regarding the stagnant bubble pattern, the results suggest prevailing E region Hall conductivity and equatorward wind as potential agents.

在过去的几十年中，人们对赤道等离子体气泡结构及其与电离层闪烁的关系进行了各种研究。在许多发现中，调查通常报告了主要的等离子气泡向东速度，幅度为几十米/秒，并且与这些耗尽结构对齐的跨电离层信号具有更大幅度的闪烁。然而，在巴西地区记录了一个罕见的持久事件，其平均纬向漂移可忽略不计，持续数百分钟，从而可以对这种特定条件下的闪烁模式进行案例研究。此处使用了来自电离探空仪、全天成像仪（6300 Å 过滤器）、地球静止卫星和全球导航卫星系统的数据，覆盖了巴西电离层的东部。结果表明，与事件前后的其他夜晚相比，闪烁不那么强烈，这表明更大的等离子体密度梯度和连续气泡结构似乎比单独的对齐条件导致了更严重的闪烁场景，尽管后者也有助于使闪烁恶化效果。关于停滞气泡模式，结果表明 E 区霍尔电导率和赤道风作为潜在因素。