Data from the planar Langmuir probe onboard the Communication/Navigation Outage Forecasting System has been processed, with focus on the: (1) identification of Equatorial Plasma Bubbles located within the eclipse sections of the satellite orbits; (2) subdivision of each Equatorial Plasma Bubble into three sections (West Wall, Center, and East Wall); and (3) statistical analyses of the standard deviations and gradients of ion density data for each section. The statistical distributions resulted from the application of the above processing to structures identified during the years October 1, 2008 to September 30, 2009 (solar minimum conditions) and June 5, 2012 to June 4, 2013 (close to maximum conditions of solar cycle 24). The statistical distributions have also been classified considering all longitudes or three 60° longitude sectors in South America, Africa, India‐Asia, as well as all altitudes of the C/NOFS satellite or the limited range from 650 to 800 km. It will be shown that all the parameters (Equatorial Plasma Bubble sections, solar activity, longitude sector, and altitude range) affect the resulting statistical distributions. Additionally, the probability density functions (pdfs) of ion density gradients for the EPB West Walls, Centers, and East Walls and the South American longitude sector, detected during 2012 and estimated with different resolutions will be compared. While the pdfs based on 1‐Hz low‐resolution data (sampling large‐scale structures) display east‐west asymmetries, those based on the original 512‐Hz high‐resolution data (sampling small‐scale structures), created by secondary plasma instabilities, are essentially symmetric around the reference 0 mm/km gradient.

中文翻译：

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基于C / NOFS平面Langmuir探针数据的低纬电离层等离子体气泡内离子密度不规则分布及其梯度。

来自通信/导航中断预报系统上的平面Langmuir探测器的数据已得到处理，重点是：（1）识别位于卫星轨道蚀区内的赤道等离子泡；（2）将每个赤道等离子泡分为三个部分（西墙，中墙和东墙）；（3）统计每个部分的离子密度数据的标准偏差和梯度。统计分布是由于将上述处理应用于在2008年10月1日至2009年9月30日（太阳最低条件）和2012年6月5日至2013年6月4日（接近太阳周期24的最大条件）期间确定的结构而产生的）。还对统计分布进行了分类，其中考虑了南美，非洲，印度-亚洲的所有经度或三个60°经度扇区，以及C / NOFS卫星的所有高度或从650到800 km的有限范围。将显示所有参数（赤道等离子气泡截面，太阳活动，经度扇形和高度范围）都会影响所得的统计分布。此外，还将对2012年期间检测到的EPB西墙，中墙和东墙以及南美经度扇区的离子密度梯度的概率密度函数（pdfs）进行比较，并用不同的分辨率进行估算。虽然基于1 Hz低分辨率数据（对大型结构进行采样）的pdf会显示东西向不对称性，