Motions in Jovian Hot Spots - Plume Regions using Voyager Images

Details Motions in Jovian Hot Spots - Plume Regions using Voyager Images Motions in Jovian Hot Spots - Plume Regions using Voyager Images

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30.1068h&link_type=abstract

American Astronomical Society, DPS meeting #30, #30.P12; Bulletin of the American Astronomical Society, Vol. 30, p.1068

Astronomy and Astrophysics

Astronomy

Scientific paper

We have measured the motions and wind velocity vectors in six jovian hot spots - plume areas (latitudes 0 deg. to +12 deg.) using high resolution Voyager 1 and 2 images separated by one jovian rotation (10 hours). Rapid changes in cloud forms take place in few hours at scales from 100 - 2000 km. No large scale organized motions, e.g. diagonal convergence along the plume tails toward hot spots or circulation patterns, as those recently reported using Galileo images separated by 1 hour, have been found. We show through a simple calculation, that particle evaporation and cloud element mixing in the upper ammonia cloud could be fast enough to account for this effect.

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