Dynamics of the earth and planetary deep interiors

建议的研究项目的目标是：（1）利用数值技术计算地球的简正模频率，特别是已知观测频率的摆动和章动的频率，精确到等势面椭圆率的二阶项;（2）研究椭圆不稳定性对地球流体核与内核、地幔之间粘性耦合的影响;我们还计划研究椭圆不稳定性对行星磁发电机的作用;（3）利用实验技术研究与地球流体核成比例的流体壳层的波数一模。这将提高这些模式的预测频率的准确性，因此，有助于提高我们对地球深层内部特性的认识。这反过来将有助于更好地预测我们星球的未来状态和行为。

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.