Ionospheric Irregularities: Auroral Motions and Plasma Drifts.
Final rept. 10 Jan-30 Sep 74,
LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CALIF PALO ALTO RESEARCH LAB
Pagination or Media Count:
Photometric measurements of auroral intensities and spatial structure were made at Chatanika, Alaska during 1973 and 1974. The auroral intensities measured during 1974 in support of the ICE CAP 74 program of experiments are analyzed in terms of the energy input from precipitating particles. Auroral motion data which were obtained during the ICE CAP 73 program are analyzed in terms of the direction and velocity of the wavelike structure of the auroras. These velocity data are compared with measurements of the ionospheric plasma motion made by the Chatanika incoherent scatter radar. Over a wide range of auroral conditions, at least part of the time, it is found that the motions of auroral forms agree with the motion of the ionospheric plasma. This behavior suggests that both phenomena are driven by magnetospheric E-fields superimposed upon the ionosphere.
- Atmospheric Physics