The Earth's Anisotropic Core is Driving its Magnetic Dipole Field
Earth’s core is the source of our planet’s magnetic field, which protects us from dangerous cosmic radiation and helps birds migrate each year. New research from a team of geophysicists has revealed that the inner core of the Earth is anisotropic, meaning that its properties (e.g. density and temperature) vary in different directions. The team’s findings suggest that the anisotropic nature of the core is the driving force behind Earth’s dipole field, which is the main component of the planet’s magnetic field. This research could have far-reaching implications for our understanding of Earth’s magnetic field and the processes at work in its core.
source: Phys.org