Neptune's Wind Speeds Obtained by Tracking Clouds in Voyager Images

  title={Neptune's Wind Speeds Obtained by Tracking Clouds in Voyager Images},
  author={Heidi B. Hammel and Reta Beebe and Eric M. De Jong and Carl J. Hansen and Corey Howell and Andrew P. Ingersoll and Torrence V. Johnson and Sanjay S. Limaye and Julio A. Magalhāes and James B. Pollack and Lawrence A. Sromovsky and Verner E. Suomi and Catherine E. Swift},
  pages={1367 - 1369}
Images of Neptune obtained by the narrow-angle camera of the Voyager 2 spacecraft reveal large-scale cloud features that persist for several months or longer. The features' periods of rotation about the planetary axis range from 15.8 to 18.4 hours. The atmosphere equatorward of -53� rotates with periods longer than the 16.05-hour period deduced from Voyager's planetary radio astronomy experiment (presumably the planet's internal rotation period). The wind speeds computed with respect to this… 
Winds of Neptune - Voyager observations of cloud motions
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Neptune Cloud Structure at Visible Wavelengths
  • H. Hammel
  • Physics, Environmental Science
  • 1989
The detection of discrete features at visible wavelengths is of special importance to the upcoming Voyager encounter with Neptune: the wide-angle camera has a 6190 � filter similar to that used for these observations.
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