On the plausible linkage of thermospheric meridional winds with the equatorial spread F
On the plausible linkage of thermospheric meridional winds with the equatorial spread F
复制标题
关于热层经向风与赤道扩散 F 的合理联系
DOI：
10.1016/s1364-6826(01)00089-x
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发表时间：
2002
影响因子：
1.9
通讯作者：
R. Sridharan
中科院分区：
文献类型：
--
作者：
C. Devasia;N. Jyoti;K. Subbarao;K. Viswanathan;D. Tiwari;R. Sridharan
通过对不同地球物理条件下观测事件的个例研究，揭示了赤道扩展F（ESF）在赤道扩展期间热层纬向风的某些特征及其在触发ESF中的可能作用，这些事件基本上控制着日落后F层高度（h′F）的上升。研究表明，当h′F低于触发不稳定的临界高度时，当有向赤道风存在时，向赤道风的极性和大小变得显著。对ESF事件和非ESF事件中纬向风的明显不同特征进行了讨论。
Some of the characteristic features of thermospheric meridional winds during equinoctial period, associated with equatorial spread F (ESF) and their possible role in the triggering of ESF are presented through case studies of observational events under different geophysical conditions that essentially control the post-sunset F-layer height (h′F) rise. The present study reveals that the polarity and magnitude of the meridional winds become significant with the equatorward wind being present when the h′F is below a critical height for the instability to get triggered. The distinctly different characteristic features of the meridional winds during ESF and non-ESF events are presented and discussed.