Doppler shift pulsations on whistler mode signals from a VLF transmitter

摘要: Whistler mode signals from the NAA transmitter (24 kHz) received at Faraday, Antarctica are processed to obtain Doppler shift a much higher time resolution than has previously been possible. This allowed observation of pulsations about 13 mHz frequency which believed be associated with hydromagnetic waves in magnetosphere. The observed separately on number discrete group delay features that can interpreted as individual whistler ducts. Using measured pulsation phase over array ducts velocity and wave normal direction equatorial plane estimated. propagation is consistent source dayside magnetopause. The association between shifts reported before but not, far we aware, using an experimental technique allows measurements order determine wave.