Changes in strong magnetic field over Canada and Siberia

The latest results from the European Space Agency’s Swarm satellite constellation highlight the dynamic nature of Earth’s magnetism. In the northern hemisphere there are two areas where the magnetic field is particularly strong – one around Canada and the other around Siberia. Since the launch of Swarm in 2013 the Canadian strong field region has decreased while the Siberian strong field region has increased.

Read full story: Swarm reveals growing weak spot in Earth’s magnetic field