An assessment of the role of precipitation in magnetospheric convection
An assessment of the role of precipitation in magnetospheric convection
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DOI：
10.1029/ja083ia11p05227
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发表时间：
1978-11
影响因子：
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通讯作者：
D. Southwood;R. Wolf
中科院分区：
文献类型：
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作者：
D. Southwood;R. Wolf
两种方式进行检查，粒子沉淀可以影响磁层对流的整体格局。首先，由于降水造成的损失可能会降低屏蔽过程的有效性，该屏蔽过程用于防止高纬度对流电场渗透到低纬度。第二，电子沉降可以通过改变电离层电导率来强烈地影响流动模式。我们的结论是屏蔽等离子体片电子边界很可能是强烈依赖于损失率，但在质子环电流的内边缘，它总是有一定的重要性。我们还发现，屏蔽和增强的电导率在极光区的综合效果可以在电离层槽快速流动，类似于最近的观测。
Two ways are examined in which particle precipitation can affect the overall pattern of magnetospheric convection. First, loss due to precipitation may reduce the effectiveness of the shielding process that acts to prevent the high-latitude convection electric field from penetrating to low latitudes. Second, electron precipitation can strongly influence the flow pattern by modifying the ionospheric conductivity. We conclude that shielding by the plasma sheet electron boundary is likely to be strongly dependent on the loss rate, but at the inner edge of the proton ring current it will always have some importance. We also find that the combined effect of shielding and enhanced conductivity in the auroral zone can be rapid flow in the ionospheric trough, similar to recent observations.