geomagnética
Geomagnetism refers to the magnetic field of the Earth. This field is generated by the motion of molten iron and nickel in the outer core of the planet, a process known as the geodynamo. The geomagnetic field extends from the Earth's interior to where it meets the solar wind, a stream of charged particles emanating from the Sun. It is approximately dipolar, with the magnetic poles near, but not exactly at, the geographic poles.
The geomagnetic field is crucial for life on Earth. It protects the planet from solar and cosmic
The geomagnetic field is not static; it changes over time. These changes are known as geomagnetic secular
The study of geomagnetism involves measuring the Earth's magnetic field and its variations. This is done using