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Can the Core-Mantle Boundary Topography Influence the Earth's Nutation?
Published online by Cambridge University Press: 19 July 2016
Abstract
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The nutation of the Earth with slightly nonelliptical liquid core is investigated by the perturbation theory method. It is shown that first-order terms affect the core ellipticity and its triaxiality. The most sensitive nutation terms in the second approximation were found to be retrograde 18.6-year term and retrograde annual term. The observed nutation amplitude values can be satisfied by special core-mantle boundary form.
- Type
- Part 3: Concepts, Definitions, Models
- Information
- Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 161 - 162
- Copyright
- Copyright © Kluwer 1990
References
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Morelli, A. and Dziewonski, A. (1987) ‘Topography of the core-mantle boundary’, Nature
325, 678–683.Google Scholar
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