In Earth's core, motions of liquid iron act as a dynamo producing the geomagnetic field. This course explores the composition, structure and physical conditions in Earth's core and describes the geomagnetic field before focusing on the geodynamo mechanism. An interdisciplinary perspective is adopted involving electromagnetism and fluid dynamics but also seismology and mineral physics.

Treatment of fundamental aspects of gravimetry and geomagnetism. We review the fundamentals of gravity set out by Newton, orbital dynamics and gravity applications in exploration geophysics. We will explore the mechanisms by which the geomagnetic field is created, how geomagnetic measurements can be used for resource exploration, and how palaeomagnetism tells us about the history of the Earth.