Dynamics of the earth and planetary deep interiors

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The objectives of the proposed research project are: (1) to use numerical techniques to compute, accurate to second-order-terms in the ellipticity of the equipotential surfaces, the frequencies of the Earth's normal modes, especially those of wobble and nutation for which observed frequencies are known; (2) to study the effects of elliptical instability on the viscous coupling between the Earth's fluid core and the inner core and mantle; we also plan to study the role of the elliptical instability on the planetary magneto dynamo; (3) to use experimental techniques to study the wave number one modes of a fluid shell proportional to the Earth's fluid core. These will improve the accuracy of the predicted frequencies of these modes and, therefore, help improve our knowledge of the Earth's deep interior properties. This, in turn, will help better predict the future state and behaviour of our planet.