VHF/UHF SCINTILLATIONS AND VHF FAST FARADAY ROTATION FLUCTUATIONS AT WUCHANG

In this paper, a statistical analysis is made on VHF/UHF amplitude scintillations and VHFfast Faraday rotation fluctuations by the recordings of the 136 MHz beacon signal from the Japanese satellite ETS-II at 130.0°Eand the 714 MHz television signal from Soviet geostationary station-T at 99.0°Eobtained at Wuchang during the period September 1988 through May 1989. It is shown that nighttime scintillations appear to have an essentially equatorial nature toward the time of maximum solar activity, and the occurrence of VHF/UHF scintillations reaches its' maximum near two equinoxes. The irregularities producing these phenomena seem to drift from west to east with a speed of about 14 m/s in the pre-midnight hours and of about 90 m/s in the post-midnight hours.