Magnetic field of the Earth

magnetic field that extends from the Earth's inner core to where it meets the solar wind

area in South Atlantic where the Earth's magnetic field is weakest relative to an idealized dipole, so that the inner Van Allen radiation belt comes closest to the Earth's surface (altitude 200 km), exposing satellites to higher-than-usual radiation

geomagnetic reversal

establishing the age of archaeological artifacts based on remanence magnetism

standard model of the structure of Earth's magnetic field

simple approximation of Earth's magnetic field