IMAGE Extreme UltraViolet (EUV) Imager, Modified Data 2 (M2), 10 min Data

The IMAGE extreme ultraviolet (EUV) imager detects resonantly scattered solar EUV photons with a wavelength of 30.4 nm that have been resonantly scattered by singly ionized helium (Sandel et al., 2000). The sizeable database of IMAGE global snapshots from the extreme ultraviolet (EUV) imager provides revolutionary observations of spatial and temporal plasma distributions throughout the plasmasphere. In this study, the IMAGE EUV data have been mapped to the equator using the approach detailed in Gallagher et al. (2005). IMAGE EUV data have been used to create an automated method that locates and extracts the plasmapause. The plasmapause extraction technique searches a set range of possible plasmasphere densities for a maximum gradient in order to identify the magnetic local time, MLT, dependent plasmapause position as a function of time. This description has been adapted from text appearing in Katus et al. (2015).

IMAGE极紫外（EUV）成像仪可探测波长为30.4纳米的太阳极紫外光子，这些光子经单电离氦共振散射（Sandel等人，2000）。IMAGE极紫外成像仪所产生的庞大全球快照数据库，为等离子体层（plasmasphere）内时空等离子体分布提供了革命性观测。本研究中，IMAGE EUV数据已通过Gallagher等人（2005）详述的方法映射至赤道。用IMAGE EUV数据构建了一种自动定位并提取等离子体层顶（plasmapause）的方法。该等离子体层顶提取技术通过在等离子体层可能的密度范围内搜索最大梯度，以确定依赖于磁地方时（MLT）的等离子体层顶位置随时间的变化。本描述改编自Katus等人（2015）的文本内容。