A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar
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中纬度 Blackstone SuperDARN 雷达观测到的等离子体不规则性调查
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Lester
中科院分区：
文献类型：
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作者：
A. J. Ribeiro;J. Ruohoniemi;J. Baker;L. Clausen;R. Greenwald;M. Lester
[1]超级双极光雷达网络（SuperDARN）是一系列监测电离层等离子体动力学的高频雷达。近年来，SuperDARN已扩展到中纬度地区，以便在地磁活跃期提供更大的覆盖范围。在静止条件下，在暗面经常观测到一种新的低多普勒速度的F区等离子体不规则结构的后向散射。使用三年的数据，从黑石，VA雷达，我们已经实现了一种方法，从常规观测中提取这种新类型的后向散射。我们统计了次极光电离层散射（SAIS）事件的发生特性，包括纬度关系的赤道边缘的极光椭圆和电离层投影的等离子体层顶。我们发现，后向散射仅限于当地的夜晚，发生在70%的夜晚，是固定的地磁纬度，赤道的极光区和等离子体层顶边界。我们的结论是，SAIS的不规则性是共轭的内磁层（等离子体）的纬度范围内观察。
[1] The Super Dual Auroral Radar Network (SuperDARN) is a chain of HF radars that monitor plasma dynamics in the ionosphere. In recent years, SuperDARN has expanded to midlatitudes in order to provide enhanced coverage during geomagnetically active periods. A new type of backscatter from F region plasma irregularities with low Doppler velocity has been frequently observed on the nightside during quiescent conditions. Using three years of data from the Blackstone, VA radar, we have implemented a method for extracting this new type of backscatter from routine observations. We have statistically characterized the occurrence properties of the Sub Auroral Ionospheric Scatter (SAIS) events, including the latitudinal relationships to the equatorward edge of the auroral oval and the ionospheric projection of the plasmapause. We find that the backscatter is confined to local night, occurs on ≈70% of nights, is fixed in geomagnetic latitude, and is equatorward of both the auroral region and the plasmapause boundary. We conclude that SAIS irregularities are observed within a range of latitudes that is conjugate to the inner magnetosphere (plasmasphere).
中纬度地区 Wallops SuperDARN 雷达对电离层对流的观测
DOI：
10.1029/2006ja011982
发表时间：
2007
期刊：
Space Physics
影响因子：
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作者：
Baker J
通讯作者：
Baker J