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| Titel |
The Venus ionosphere in the northern polar region |
| VerfasserIn |
A. G. Wood, M. Grandé, S. E. Pryse, I. C. Whittaker, A. J. Coates, N. Shane |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250024336
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| Zusammenfassung |
| PLASLIFE is a computer simulation which assists in the interpretation of high latitude
ionospheric observations and, in this study, is applied to the polar regions of Venus.
The Venus Express spacecraft samples the high latitude ionosphere in the northern
hemisphere of the planet. On 4 August 2008 it was inserted into a new orbit with
pericentre located below 200 km close to 86o N. The ASPERA-4 instrument on the
spacecraft records the first extended in situ data set of the plasma environment in this
sector. The observed ionospheric ion and electron populations exhibit significant
variation between orbits and, by compensating for the effects of solar zenith angle and
altitude, the relative contributions of photoionisation and plasma transport can be
investigated. These variations are discussed with respect to parameters including
local time and solar flux. Comparisons are drawn with the terrestrial ionosphere. |
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