Interior structure of Neptune: Comparison with Uranus.
Abstract
Measurements of rotation rates and gravitational harmonics of Neptune made with the Voyager 2 spacecraft allow tighter constraints on models of the planet's interior. Shock measurements of material that may match the composition of Neptune, the so-calied planetary ;;ice,'' have been carried out to pressures exceeding 200 gigapascals (2 megabars). Comparison of shock data with inferred pressure-density profiles for both Uranus and Neptune shows substantial similarity through most of the mass of both planets. Analysis of the effect of Neptune's strong differential rotation on its gravitational harmonics indicates that differential rotation involves only the outermost few percent of Neptune's mass.
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The retrograde equatorial jets in the Uranus and Neptune simulations are strongest in the stratosphere and weaken with depth, consistent with inferences drawn from gravity measurements with the Voyager 2 spacecraft.
“The retrograde equatorial jets in the Uranus and Neptune simulations are strongest in the stratosphere and weaken with depth, consistent with inferences drawn from gravity measurements with the Voyager 2 spacecraft (Hubbard et al. 1991).”
From Mechanisms of Jet Formation on the Giant Planets (2010) · cites this paper as Hubbard et al. 1991
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Mechanisms of Jet Formation on the Giant Planets
Liu, J., & Schneider, T. (2010) · Journal of the Atmospheric Sciences · doi:10.1175/2010jas3492.1 · Cited by 135 · see citing works
The effects of vigorous mixing in a convective model of zonal flow on the ice giants.
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- Authors
- Hubbard, W. B., Nellis, W. J., Mitchell, A. C., Holmes, N. C., Limaye, S. S., & McCandless, P. C.
- Affiliations
- University of Arizona (US)
- Lawrence Livermore National Laboratory (US)
- University of Wisconsin–Madison (US)
- Venue
- Science
- Published
- 1991-08-09
- Volume
- 253
- Issue
- 5020
- Pages
- 648-651
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2068936519
- Cited by
- 184
- References
- 24
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 10 · 2023: 3 · 2022: 7 · 2021: 7 · 2020: 12 · 2019: 4 · 2018: 7 · 2017: 9 · 2016: 4 · 2015: 8 · 2014: 9 · 2013: 8 · 2012: 13
- FWCI
- 6.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
- Physical Sciences › Earth and Planetary Sciences › Geophysics › High-pressure geophysics and materials
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Keywords
- Neptune, Uranus, planetary interiors, differential rotation, gravitational harmonics, planetary ices, shock compression, Voyager 2
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