Abstract
HORIZONTAL stresses at the interface where the liquid core of the Earth meets the surrounding solid mantle prevent these two major regions of the Earth from moving independently of one another. Speculations as to the physical nature of these stresses have been made in connexion (a) with the investigation of whether the precessional motion of the mantle is significant as a possible cause of the fluid motions in the core that produce the Earth's magnetic field, and (b) with the interpretation of certain tiny, irregular secular changes in the direction and magnitude of the angular velocity of the mantle as being manifestations of fluctuations in core motions. (The books by Munk and Macdonald1 and Marsden and Cameron2 give extensive lists of pertinent references.)
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References
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HIDE, R. Interaction between the Earth's Liquid Core and Solid Mantle. Nature 222, 1055–1056 (1969). https://doi.org/10.1038/2221055a0
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DOI: https://doi.org/10.1038/2221055a0
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