Associate Professor of Geophysics, University of Leeds
My research interests place me within the Deep Earth Research Group of the Institute of Geophysics and Tectonics. My primary research focus is the dynamics of the core-mantle system. Observed oscillations of the fluid and solid cores provide insight into properties such as the strength and morphology of the magnetic field within the core, the viscosities of the fluid and solid cores, the shape of the inner core and core-mantle boundaries, and the conductivity of the lowermost mantle. Core oscillations can be detected using observations of magnetic field variations, changes in length-of-day and polar motion, and changes in the gravity field. The global magnetic field is generated by fluid motions in the core, and by studying the structure and evolution of the magnetic field we can understand the dynamics of the core and its interactions with the overlying mantle.
Why the Earth's magnetic poles could be about to swap places – and how it would affect us
Jan 27, 2017 10:43 am UTC| Science
The Earths magnetic field surrounds our planet like an invisible force field protecting life from harmful solar radiation by deflecting charged particles away. Far from being constant, this field is continuously changing....
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