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Earth’s Magnetic Field

The Earth’s magnetic field is generated in the fluid outer core by a self-exciting dynamo process. In addition to sources in the Earth’s core the magnetic field observable at the Earth’s surface has sources in the crust, in the ionosphere and magnetosphere.
The monitoring and analysis of the elements of the geomagnetic field permits to understand the properties of the present geomagnetic field and of its origin.
The study of the geomagnetic field has also many important practical applications, some of which have been made for centuries. Indeed, the magnetic field can be used for orientation, navigation, and mineral and oil exploration.
The main function of the geomagnetism group at INGV is to monitor the Earth’s magnetic field in Italy and in the surrounding areas as well as in Antarctica and to conduct scientific investigations on these data.

 


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