What does a magnetic storm mean?

Magnetic storm is that when the charged particle flow in the solar wind reaches near the earth, it affects the geomagnetic field and causes drastic changes in the geomagnetic field.

Magnetic storms are closely related to solar activity. When the sun is active, a large number of sunspots, flares and coronal mass ejections will appear on the surface of the sun, releasing a large number of charged particle streams and magnetic fields, forming solar storms. When the charged particle flow and magnetic field in the solar storm reach the earth, they will interact with the earth's magnetic field, causing the disturbance and deformation of the earth's magnetic field, thus producing geomagnetic storms. Geomagnetic storms will have a great impact on the earth's magnetic field.

When a local magnetic storm occurs, the earth's magnetic field will change, and the magnetic lines will be deformed, twisted and rearranged, resulting in changes in the strength and direction of the magnetic field. These changes will affect the normal operation of spacecraft, satellites, navigation systems and other high-tech equipment.

Effects of magnetic storms:

1, the magnetic storm activity will affect the operation of the satellite, and the operation of the satellite depends on the geomagnetic field to locate it. However, the occurrence of magnetic storm activities will make the positioning of satellites deviate, thus affecting the navigation system and even the accuracy of weather forecast.

2. Magnetic storm activity will also affect the operation of power system, which works by electromagnetic induction. The occurrence of magnetic storm will lead to the change of electromagnetic field, thus affecting the stable operation of power system. In severe cases, it may even lead to a large-scale power outage.

3. When a local magnetic storm occurs, charged particles in the geomagnetic field will enter the earth's atmosphere along the magnetic field lines, causing molecules and atoms in the atmosphere to collide and produce "fluorescence", which is commonly called "aurora".

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