Abstract The characteristics of the equatorial F-region zonal plasma drift during post-sunset period have been investigated using the multi-frequency HF Doppler radar. The pattern of the zonal plasma drift is such that it starts with a westward drift during the pre-sunset hours, followed by an eastward drift shortly after the E-region sunset. The zonal plasma drift is characterized by the presence of a positive vertical shear around the post-sunset period and maximum shear is observed at the time of the peak of the pre-reversal enhancement in the vertical drift. The presence of vertical shear in the zonal drift is associated with the post-sunset velocity vortex existing at the equatorial F-region.
Vertical shear at the equatorial F-region ionosphere during post-sunset hours
Advances in Space Research ; 49 , 8 ; 1277-1281
2012-01-19
5 pages
Article (Journal)
Electronic Resource
English
Vertical shear at the equatorial F-region ionosphere during post-sunset hours
Online Contents | 2012
|