Reflections on the Geodynamo

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• Peter Davidson, Department of Engineering, University of Cambridge
• Friday 26 November 2021, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

If you have a question about this talk, please contact Prof. Jerome Neufeld.

Numerical simulations of the geodynamo are, perhaps, finally beginning to approach a dynamically relevant regime. It seems timely, therefore, to compare the results of those simulations with the various conceptual cartoons of the geodynamo that have been developed over the decades. One such cartoon is presented here, based in part on helical wave dispersion within the Earth’s core. This cartoon is far from the standard model, but nevertheless seems consistent with the evidence of the numerical simulations. Of course, understanding the numerical simulations is not at all the same as understanding the geodynamo, but perhaps it is a start.

This talk is part of the Fluid Mechanics (DAMTP) series.

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