Computer Science – Sound
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..742p&link_type=abstract
European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a
Computer Science
Sound
Scientific paper
Abstract The radio science experiment Vera on Venus Express (VEX) sounds the ionosphere of Venus during socalled occultation seasons. In each orbit the VEX spacecraft disappears behind the planetary disk as seen from the Earth. Prior to occultation the radio signals propagate through the ionosphere and are bended according to the local state of the electron density. An Ultrastable Oscillator connected to the onboard transmitters allows the transmission of stabilized dualfrequency one-way radio signals. The one-way method makes it feasible to record the ingress and the egress from occultation as well. Half of the observations of one occultation season is at day, the other half at nighttimes. The ingress location makes a latitudinal cut through one hemisphere from equatorial to polar regions during the occultation season and back while the egress location stays at high polar latitudes of the opposite hemisphere. Seventy occultations with about 140 electron density profiles have been observed. The entire structure of the ionosphere can be observed and will be described in this presentation: from the base at 120 km, a well established double layer daytime structure V1 and V2 (main peak) at 130 km and 150 km, respectively, a potential third layer in the topside, the well established ionopause feature and the residual nighttime ionisation.
Bird Michael
Häußler Boris
Pätzold Martin
Tellmann Silvia
Tyler Leonard G.
No associations
LandOfFree
The Structure of the Venus Ionosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Structure of the Venus Ionosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Structure of the Venus Ionosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1794288