Erdmagnetfeldrichtungen
Earth's magnetic field, also known as the geomagnetic field (in German discussions often referred to as Erdmagnetfeld), is the planetary magnetic field that surrounds Earth and extends from its interior into space. Its dominant component is a dipole-like field, though the actual field is offset from the planet’s center and evolves over time. The field is generated by the geodynamo: convection of liquid iron in the outer core combined with Earth's rotation, which sustains electrical currents that produce the magnetic field.
At the surface, field strength ranges roughly from 25 to 65 microteslas (0.25 to 0.65 gauss). The
The magnetosphere is the region of space dominated by Earth’s magnetic field, acting as a shield against
Polarity reversals have occurred irregularly in Earth’s history, typically over hundreds of thousands of years. The
Modern measurements from ground observatories and satellites (for example, the Swarm mission) continuously monitor the field