Physics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3701204k&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 1, CiteID L01204
Physics
4
Planetary Sciences: Fluid Planets: Gravitational Fields (1221), Planetary Sciences: Fluid Planets: Meteorology (3346), Planetary Sciences: Solar System Objects: Jupiter, Atmospheric Composition And Structure: Planetary Atmospheres (5210, 5405, 5704), Geodesy And Gravity: Atmosphere Monitoring With Geodetic Techniques (6952)
Scientific paper
Telescopic observations and space missions to Jupiter have provided vast information about Jupiter's cloud level winds, but the depth to which these winds penetrate has remained an ongoing mystery. Scheduled to be launched in 2011, the Jupiter orbiter Juno will make high-resolution observations of Jupiter's gravity field. In this paper we show that these measurements are sensitive to the depth of the internal winds. We use dynamical models ranging from an idealized thermal wind balance analysis, using the observed cloud-top winds, to a full general circulation model (GCM). We relate the depth of the dynamics to the external gravity spectrum for different internal wind structure scenarios. In particular, we predict that substantial Jovian winds below a depth of 500 km would lead to detectable (milligal-level) gravity anomalies with respect to the expected gravity for a planet in solid body rotation.
Flierl Glenn R.
Hubbard William B.
Kaspi Yohai
Showman Adam P.
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