Geomagnetic Secular Variation and Earth's Core Dynamics - Edward Bullard Lecture

Explore the dynamics of Earth's core through geomagnetic secular variation in this 59-minute AGU Fall Meeting Edward Bullard Lecture. Delve into historical data, Holocene magnetic fields, and recent advancements presented by A. Jackson from ETH Zürich's Institute for Geophysics. Examine field strength, morphology, and torsional oscillations while understanding the link between cylinders and fluid motions over time. Investigate seismic geodesy, magnetic induction equations, and data assimilation techniques, including the adjoint method. Gain insights into the importance of magnetic induction, neutron star induction, and field modes. Conclude with a comprehensive summary and engage in a thought-provoking Q&A session.