géomagnétique

Géomagnétique refers to the magnetic field generated by the Earth. This field originates deep within the planet, primarily from the motion of molten iron and nickel in the outer core. It extends far out into space, creating a protective magnetosphere that shields us from harmful solar winds. The geomagnetic field is not static; it fluctuates over time, with the magnetic poles slowly drifting and occasionally reversing their polarity. Scientists study geomagnetism through various methods, including analyzing historical records of magnetic declination and using sophisticated instruments to measure field strength and direction. Understanding the geomagnetic field is crucial for navigation, telecommunications, and comprehending space weather phenomena. The Earth's magnetic field plays a vital role in the habitability of our planet.