Chris Finlay

Séminaire régulier
ETH Zurich

Earth's liquid metal outer core is a rapidly-rotating MHD system. Fluid motions there are strongly influenced by the presence of the dynamo-generated geomagnetic field and by Coriolis effects. In this talk I will give an introduction to the physics of hydromagnetic waves in rapidly-rotating systems and describe some attempts to model such waves driven by convection in a spherical geometry. Geophysical observations suggestive of the presence of hydromagnetic waves in Earth's core will be described and the importance of complementary experimental studies discussed.