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Interior Structure of Neptune: Comparison with Uranus

Name: Interior Structure of Neptune: Comparison with Uranus
Keywords: 13. Climate action

descriptionPublicationkeyboard_double_arrow_right Article 09 Aug 1991Publisher:American Association for the Advancement of Science (AAAS)Journal:Science, volume 253, pages 648-651 (issn: 0036-8075, eissn: 1095-9203,

Authors: Hubbard, W. B.; Nellis, W. J.; Mitchell, A. C.; Holmes, N. C.; Limaye, S. S.; McCandless, P. C.;

doi: 10.1126/science.253.5020.648

pmid: 17772369

Interior Structure of Neptune: Comparison with Uranus

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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-called 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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