Earth´s magnetic field


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Note: "Earth´s magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth´s interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth´s outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo. The magnitude of Earth´s magnetic field at its surface ranges from 25 to 65 μT (0.25 to 0.65 G). As an approximation, it is represented by a field of a magnetic dipole currently tilted at an angle of about 11° with respect to Earth´s rotational axis, as if there were an enormous bar magnet placed at that angle through the center of Earth. The North geomagnetic pole actually represents the South pole of Earth´s magnetic field, and conversely the South geomagnetic pole corresponds to the north pole of Earth´s magnetic field (because opposite magnetic poles attract and the north end of a magnet, like a compass needle, points toward Earth´s South magnetic field, i.e., the North geomagnetic pole near the Geographic North Pole). As of 2015, the North geomagnetic pole was located on Ellesmere Island, Nunavut, Canada." - (en.wikipedia.org 04.10.2022)

[Last update: 2022/10/05]