Prof. Peter Davidson, University of Cambridge

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Title: Reversals of the Geodynamo

Abstract: Somewhat surprisingly, there is still no convincing model, or even cartoon, for reversals of the earth’s magnetic field. This is because the underlying mechanisms are still not understood. While numerical simulations of the geodynamo are, perhaps, finally beginning to approach a dynamically relevant regime, they still cannot reproduce realistic reversals of the terrestrial field. In this talk a new model of reversals is presented, a model whose predictions are reasonably earth like.