- © 2007 Geological Society of South Africa
High-quality magnetic observations have been obtained in recent years from a number of satellite missions. The satellite-based magnetic data, combined with ground-based data (observatory and repeat station measurements), have provided unique opportunities for studying the magnetic field of the Earth’s core and its secular variation over the globe. The southern African continent (extending into the southern Atlantic Ocean) is an important area for such studies because of its intriguing field behaviour at both the Earth’s surface and at the core-mantle boundary. A few examples of recent improvements in our knowledge of the core’s magnetic field and its secular variation over this specific region are presented, together with future developments in this zone.