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Auroral E-region electron density height profile modificationby electric field driven vertical plasma transport:some evidence in EISCAT CP-1 data statistics

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Fig. 1. Each panel shows auroral electron density profiles generated by precipitating electrons of three different flux densities
Fig. 2. The occurrence distribution plot of the electric field magni- magni-tude versus its azimuth for the night hours, which have been defined as those between 17:00 and 07:00 MLT (16:00 to 06:00 UT)
Fig. 4. The occurrence distribution plot of the electron density peak (n e ) peak as a function of the E-field azimuth for the night hours.
Fig. 6. The same as Fig. 5 (top) but for a dark ionosphere (top) and a sunlit ionosphere (bottom).
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