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Detailed Reference Information |
Seiff, A., Kirk, D.B., Mihalov, J. and Knight, T.C.D. (1999). Further evaluation of waves and turbulence encountered by the Galileo Probe during descent in Jupiter's atmosphere. Geophysical Research Letters 26: doi: 10.1029/1999GL900238. issn: 0094-8276. |
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Data from the Galileo Probe in Jupiter descent indicated descent velocity oscillations as large as ¿5 m/s on a height scale of a few km, which suggested gravity waves in the atmosphere between 4 and 20 bars (Seiff et al., 1998), an important observation for atmospheric stability and dynamics. But we now find these velocity fluctuations to be inconsistent with simultaneous measurements of mean accelerations, which were relatively steady. This conflict is resolved in favor of the accelerometers. The velocity fluctuations can be explained from digital uncertainties in the slow rate of pressure rise. However, the accelerometers did record higher frequency perturbations of up to 0.1 g. Attributed to turbulence, these imply turbulent velocities from 0.3 to 5 m/s at scales of 10 to 40 m. However, they were at least partly a result of unsteady parachute aerodynamics. ¿ 1999 American Geophysical Union |
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Abstract |
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Keywords
Planetology, Fluid Planets, Atmospheres—structure and dynamics, Meteorology and Atmospheric Dynamics, Planetary meteorology (5445, 5739), Planetology, Solar System Objects, Jupiter, Meteorology and Atmospheric Dynamics, Turbulence |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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