Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..177d&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.177
Physics
Scientific paper
Venus Express started taking magnetic field measurements at periapsis in 2006. Since then it has consistently detected whistler-mode signals attributed to lightning. Most, if not all, of these are thought to be intercloud, intracloud, or upward-going lightning; the cloud deck on Venus is at an altitude of about 60 km and thus cloud-to-ground strikes are extremely unlikely. These bursts have peak-to-peak amplitudes of up to1.5 nT in the frequency range 42-60 Hz. They are transverse and right-hand circularly polarized with respect to the background magnetic field. When this field is close to 0 nT, the occurrence rate is very low; it rises sharply at 15-20 nT, then gradually dies off as the field strength further increases. There are very few bursts observed below 200 km; the occurrence rate peaks sharply around 215 km then slowly decreases with increasing altitudes. Burst amplitude distributions and averages are also in agreement with these findings. Between 80 and 90 degrees north latitude, the burst rate with respect to local time maximizes over the terminators. It has been suggested that a burst rate local maximum around 83 degrees north latitude can be attributed to the approximate edge of the polar vortex. We further examine this possibility within this study.
Daniels T. M. J.
Russell Christopher T.
Strangeway Robert J.
Zhang Tian-Ling
No associations
LandOfFree
Venus Lightning Characteristics and Polar Vortex Correlation 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 Venus Lightning Characteristics and Polar Vortex Correlation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Venus Lightning Characteristics and Polar Vortex Correlation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1474797