0 related to the light in the sky of an aurora (= a natural appearance of coloured light in the sky): --
His research interests include plasma electrodynamics, with application to space and astrophysical plasmas, especially in the context of auroral and magnetospheric physics.
Electric currents originating in such way apparently give auroral electrons their energy.
An auroral electrojet index (measured in nanotesla) is regularly derived from ground data and serves as a general measure of auroral activity.
Such vortices can be seen in aurora as auroral curls.
Observations included meteorology, geomagnetism, auroral phenomena, ocean currents, tides, structure and motion of ice and atmospheric electricity.
The return current region is where electrons move upward from the ionosphere to close the auroral current circuit.
Radiation received also varies with geographical location (polar, auroral zones, mid-latitudes, and equatorial regions).
Therefore, when using an auroral event as a radio signal reflector, the reflected signal strength and signal intelligibility decreases with increasing transmitting frequency.
