Ogo 5 measurements of the plasmasphere during observations of stable auroral red arcs
Ogo 5 measurements of the plasmasphere during observations of stable auroral red arcs
复制标题
Ogo 5 在观测稳定极光红弧期间对等离子层的测量
DOI：
10.1029/ja076i010p02357
复制
发表时间：
1971
影响因子：
--
通讯作者：
G. W. Sharp
中科院分区：
文献类型：
--
作者：
C. Chappell;K. K. Harris;G. W. Sharp
在两次强烈磁暴期间，测量了等离子体层中的环境 H+ 离子浓度，这两次磁暴伴随着稳定的极光红 (SAR) 弧的出现。 1968年10月29日至11月7日以及10月10日至17日期间，Ogo 5上的离子质谱仪测量了H+离子密度分布。等离子体层中H+离子密度的相关性是与Dst和Kp磁指数以及6300-A SAR弧的地面观测建立的。本研究表明，在风暴快速恢复阶段，在环流粒子注入后的10~20小时内，观测到了SAR弧，风暴期间等离子体层的尺寸急剧减小，SAR弧位于等离子体层顶位置附近的L值。发现电弧发生在磁赤道面附近的磁通管底部的电离层中，磁通管周围的 H+ 离子密度为 100-1000 个离子/cm3。
Ambient H+ ion concentration was measured in the plasmasphere during two intense magnetic storms that were accompanied by occurrences of stable auroral red (SAR) arcs. The H+ ion density profiles were measured by the ion mass spectrometer on Ogo 5 during the periods October 29 to November 7, and October 10 to 17, 1968. Correlations of the H+ ion densities in the plasmasphere were made with the Dst and Kp magnetic indices and with ground observations of the 6300-A SAR arcs. This study shows that the SAR arcs are observed in the rapid recovery phase of the storm in the 10–20 hours following injection of ring current particles, and that the plasmasphere is drastically reduced in size during the storm, with the SAR arc located in L value near the position of the plasmapause. The arc is found to occur in the ionosphere at the base of flux tubes that have ambient H+ ion densities of 100–1000 ions/cm3 near the magnetic equatorial plane.