The magnetic field is vital for Earth , without it there would be no life on the planet since it protects us from the powerful solar rays . It is made up of an ocean of superheated spiral liquid iron that lies 3,000 km below our feet. We know that this field is not static and varies greatly in strength and direction . New studies reveal that the position of the magnetic north pole is changing rapidly.
In recent years, the magnetic field has lost about 9% of its strength and a large region of magnetic intensity has shrunk between Africa and South America , which is known as the South Atlantic Anomaly.Scientists from the Swarm Data, Innovation and Science Cluster are using data from ESA’s Swarn satellite constellation to better understand this anomaly . These satellites are designed to accurately identify and measure magnetic signals .
Jürgen Matzka of the German Geosciences Research Center says: “The new eastern minimum of the South Atlantic Anomaly has appeared in the last decade and has been developing vigorously in recent years. The challenge now is to understand the processes in the Earth’s core that drive these changes. ” Although this Anomaly of the South Atlantic presents no cause for alarm at the surface level , satellites and spacecraft flying through the area are likely to experience technical failure.