12. Shifting Magnetic Poles and Aurora
The Arctic’s auroras, or northern lights, are primarily influenced by solar activity and Earth’s magnetic field. While the magnetic poles do shift over time due to geomagnetic secular variation, this movement does not significantly impact auroral frequency or intensity. Auroras occur when charged particles from the solar wind interact with Earth’s magnetosphere, exciting atmospheric gases and producing light displays. These phenomena are more directly affected by solar activity cycles than by the gradual movement of the magnetic poles. For more information on Earth’s magnetic field and auroras, refer to NASA’s educational resources. (pwg.gsfc.nasa.gov)