Ionospheric response to variable electric ®elds in small-scale auroral structures
Abstract. High time and space resolution optical and radar measurements have revealed the in¯uence of electric ®elds on E-region electron density pro®les in small-scale auroral structures. Large electric ®elds are present adjacent to auroral ®laments produced by monoenergetic electron ¯uxes. The ion...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.5315 http://hal.archives-ouvertes.fr/docs/00/31/64/58/PDF/angeo-16-1343-1998.pdf |
| Summary: | Abstract. High time and space resolution optical and radar measurements have revealed the in¯uence of electric ®elds on E-region electron density pro®les in small-scale auroral structures. Large electric ®elds are present adjacent to auroral ®laments produced by monoenergetic electron ¯uxes. The ionisation pro®les measured within and beside the auroral ®laments show the e€ects of plasma convection due to electric ®elds as well as the consequences of the response time to large and dynamic ¯uxes of energetic electrons. Without highresolution optical measurements, the interpretation of the radar data is limited. Key words. Auroral ionosphere á Ionospheremagnetosphere interactions á EISCAT 1 |
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