Magnetospheric electric fields and protonospheric coupling fluxes inferred from simultaneous phase and group path measurements on whistler-mode signals

摘要: Abstract A method of measuring the radial component plasma velocity (or azimuthal electric field) in equatorial plane plasmasphere, and flux between plasmasphere ionosphere is presented. The uses measured rates change phase path group delay whistler-mode VLF signals transmitted geomagnetically conjugate points. Results from four nights are general agreement with results published by others—equatorial velocities tens metres per second (azimuthal electrical fields one or two tenths a mV/m), fluxes few times 1012 m−2 s−1-and illustrates potential limitations method.